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The Blackwood Group System: its relevance for sustainable forest management in the southern Cape
Item type: Journal Article • Journal: South African Forestry Journal • Authors: CoertJ. Geldenhuys --- Division of Water, Environment and Forestry Technology, Southern AfricaThe invasion status of Australian blackwood, Acacia melanoxylon, is assessed against its value as a commercial tree in the southern Cape forests. The species was introduced from Australian rain forests and planted extensively in the southern Cape forests since 1909... -
Multiple Resource Utilisation Developments in Mondi Forests
Item type: Journal Article • Journal: South African Forestry Journal • Authors: Richard McC. Pott --- ,Defined as the use of available resources other than the planted trees on Mondi's landholdings, the development of various MRU projects is described from 1975 onwards. Projects are differentiated into those that are directly dependant on the presence of planted... -
Droë massaproduksie van vyf eenjarige Medicago‐genotipes in die sentrale oranje‐vrystaat, soos beinvloed deur planttyd
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: L. Viljoen --- Departement van Landbou (Vrystaatstreek), V.D. Wassermann --- Departement van Landbou (Vrystaatstreek), H.J. Fouché --- Departement van Landbou (Vrystaatstreek), P.A. Human --- Departement van Landbou (Vrystaatstreek),Bogrondse droë massa‐opbrengste (DM) van Medicago truncatula, cvv. Cyprus en Jemalong, M. aculeata var. inermis, cv. SA 4438, M. orbicularis, cv. SA 2552 en M. rugosa, cv. Paragosa wat op ses verskillende datums gevestig is, is in ‘n veldproef onder... -
‘n Studie van ruproteïeninhoud en verteerbaarheid van vyf eenjarige medicago‐genotipes in die sentrale oranje‐vrystaat
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: L. Viljoen --- Departement van Landbou (Vrystaatstreek), V.D. Wassermann --- Departement van Landbou (Vrystaatstreek), H.J. Fouché --- Departement van Landbou (Vrystaatstreek), P.A. Human --- Departement van Landbou (Vrystaatstreek),Die bogrondse groei van Medicago truncatula, cvv. Cyprus en Jemalong, M. aculeata var. inermis, cv. SA 4438, M. orbicularis, pv. SA 2552 en M. rugosa, cv. Paragosa, afkomstig van ‘n besproeide veldproef, is vir ruproteïen en vir in vitro‐ verteerbaarheid... -
A comparison of a number of annual cool season legumes under dryland conditions in the Dohne Sourveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.J.G. Le Roux --- Department of Agriculture and Water Supply (Eastern Cape Region), L.G. Howe --- Department of Agriculture and Water Supply (Eastern Cape Region),Fifteen annual cool season legumes were compared under dryland conditions on two sites in the Dohne Sourveld. These sites were Dohne, with a mild but dry winter and an average rainfall of 743 mm per year, and Grasslands, a colder,... -
The effect of fire on germination in five common veld grasses
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J.K. Zacharias --- Department of Grassland Science, N.M. Tainton --- Department of Grassland Science, C. Oberholster --- Department of Grassland Science,The effect of fire on the germination of Themeda triandra, Heteropogon contortus, Panicum maximum, Aristida junciformis and Spowbolus africanus was investigated. Seeds exposed directly to the fire were destroyed in all species. The germination of seeds buried (7 to 9... -
Maize as a cover crop for the establishment of perennial pasture legumes in the south‐eastern transvaal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agriculture and Water Supply (Transvaal Region),In exploratory trials involving the underplanting of the perennial pasture legumes Coronilla varia, Lotus corniculatus and Medicago sativa in maize, the influence of maize density, time of planting of the legume and time of maize removal on legume establishment was... -
Implikasies van subhabitat‐diversiteit en die rol van bestuur op die voorkoms van ‘n aantal grasspesies van die suuragtige‐gemengde bosveld1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.N. Smit --- Departement Plantproduksie, N.F.G. Rethman --- Departement Plantproduksie,Die subhabitatvoorkeure van sewe grasspesies en die nie‐grasagtige kruide, tipies van die Suuragtige‐Gemengde Bosveld, is in agt kampe, wat verskillende langtermyn‐beweidingsbehandelings ontvang het, ondersoek. Twee subhabitatte is geidenti‐fiseer, nl. onder borne en tussen bome. Verskille in die subhabitatvoorkeure van die... -
Communal land use and the ‘tragedy of the commons’: Some problems and development perspectives with specific reference to semi‐arid regions of southern Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: E.A. Boonzaier --- Department of Social Anthropology, Republic of South Africa M.T. Hoffman --- Department of Botany, Republic of South Africa FionaM. Archer --- Department of Botany, Republic of South Africa A.B. Smith --- Department of Archaeology, Republic of South AfricaTraditional communal farming in southern Africa has often been described as unproductive and directly responsible for regional poverty and vegetation degradation. Each aspect of this argument rests on a set of unchallenged assumptions concerning the nature of communal farming. Studies... -
The national grazing strategy of the Republic of South Africa Objectives, achievements and future challenges
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.F. du Toit --- Department of Agricultural Development, Republic of South Africa A.J. Aucamp --- , Republic of South Africa J.J. Bruwer --- Department of Agricultural Development, Republic of South AfricaOver the past few years various measures have been applied to address the problem of the retrogression of southern African rangelands. However, it has become apparent that many of these measures were ad hoc and not part of a long‐term... -
Nitrogen fixation of annual temperate clover species determined by the nitrogen difference method
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: M. van den Berg --- , Republic of South Africa J.H.F. Meyer --- , Republic of South Africa J.M.P. Geerthsen --- , Republic of South AfricaThe nitrogen fixation ability of Trifolium vesiculosum cv. Amclo and Trifolium subterraneum cv. Mount Barker in pure and mixed stands with Lolium multiflorum cv. Midmar were compared using the nitrogen difference method (NDM). The percentage and quantity of apparent legume‐derived... -
Effect of soil fertility on the vegetative growth, yield and water use of wheat (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.G. Annandale --- Department of Plant Production, Republic of South Africa P.S. Hammes --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaWell-fertilized wheat was found to use more water than wheat on poorly fertilized plots, but the yield was increased, resulting in increased water-use efficiency. Variations in leaf area duration after anthesis accounted for 81% of the variation in yield. -
Importance of rainfall oscillations in agricultural planning
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.L. du Pisani --- ,Evidence seems to indicate that the rainfall in the summer rainfall area of the RSA exhibits an oscillatory nature with a period of 16–20 years. To help maize farmers in planning for a dry or wet cycle the most recent... -
Osmoconditioning of seeds of sweet pepper (Capsicum annuum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. van de Venter --- Magaretha Mes Institute for Seed Research, Rentia Hoffman --- Magaretha Mes Institute for Seed Research,Germination rate of seeds of sweet pepper (Capsicum annuum L.) cv. Florida Resistant Giant was increased significantly at both 15 °C and 25 °C after osmotic priming for 10 days at 15 °C in solutions of polyethylene glycol. Post-treatment drying... -
Die oplosbaarheid en mobiliteit van kalk in sand
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H. v.H. van der Watt --- Departement Grondkunde en Plantvoeding,Die oplosbaarheid, diffusie en loging van twee kalktipes is in 'n suiwer sandmedium bestudeer. Deur van sand gebruik te maak is die kompliserende effek van die uitruilfase van grond geëlimineer. Die uitwerking van byvoegings van KCl, NH4Cl, Na2EDTA, organiese materiaal... -
A diallel study of yield differences among six well-adapted semi-dwarf spring wheats
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- Department of Genetics and Institute for Biotechnology, Republic of South Africa P.S. Botma --- Department of Agriculture and Water Supply, Republic of South AfricaA diallel study of the variability for yield that remained after an effort to exclude some of the factors known to contribute strongly to yield variation in the Winter Rainfall Region, was done. Overdominance resulted in strong heterosis effects which... -
Economical alternatives for topogenous peat as casing material in the cultivation of Agaricus bisporus in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Eicker --- Department of Botany, Republic of South Africa Martmari van Greuning --- Department of Botany, Republic of South AfricaSphagnum peat moss is used in most countries as a casing material in the cultivation of Agaricus bisporus. Since South Africa has no peat moss, suitable substitutes for it have to be found. Nine potential materials were screened as casing... -
The effect of leaf water potential on the carbon-dioxide uptake rate during different growth stages of wheat (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.J. Human --- Department of Agronomy, Faculty of Agriculture, Republic of South Africa W.J. Roux --- Department of Agronomy, Faculty of Agriculture, Republic of South Africa L.P. de Bruyn --- Department of Agronomy, Faculty of Agriculture, Republic of South AfricaThe effect of water stress on the CO2 uptake rate was measured at three different growth stages of wheat grown in Mitscherlich pots in a glasshouse experiment. Stress was induced by withholding water until the leaf water potential reached −2... -
The effect of seeding rate, timing of nitrogen application and frequency of irrigation on wheat growth, yield and water use
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa F.J. Dijkhuis --- , Republic of South AfricaWheat (Triticum aestivum cv. SST66) was planted in a 2 × 2 × 2 factorial field experiment. Factors investigated were seeding rate, timing of nitrogen application and frequency of irrigation. The two seeding rates were 85 and 170 kg ha−1... -
The optimal germination substratum for tomato (Lycopersicon lycopersicum (L.) Karst, ex Farw.) seed testing
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.A. Loubser --- Department of Agriculture, Republic of South Africa H.A. van de Venter --- , Republic of South AfricaDifferent germination options are prescribed by the International Seed Testing Association (ISTA) for the germination test on tomato seed. The purpose of this investigation was to compare three ISTA-approved germination substrata to establish a standardized procedure for uniform germination tests... -
A comparison of the herbage and seed yields of annual cool season pasture legumes in the Bathurst, Alexandria and Humansdorp areas
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. J.G. le Roux --- Department of Agricultural Development, Republic of South Africa T. Daines --- Department of Agricultural Development, Republic of South Africa R.A. Ingpen --- Department of Agricultural Development, Republic of South Africa E. Oosthuysen --- Department of Agricultural Development, Republic of South Africa J.S. Swart --- Department of Agricultural Development, Republic of South AfricaThe herbage and seed yields of annual cool season pasture legumes at three coastal sites in the eastern Cape are compared. Fair yields were obtained at the high rainfall sites, but at the low rainfall site the crops were unreliable... -
Resistance in wheat to maize streak virus
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.B. Scott --- Small Grain Centre, Republic of South Africa H.A. van Niekerk --- Small Grain Centre, Republic of South AfricaSixteen spring wheat cultivars were screened for resistance to maize streak virus (MSV) in the eastern Transvaal where the disease often attains epidemic proportions in wheat and maize. In this area four cultivars were resistant, two were susceptible and ten... -
The influence of method of inoculation and certain herbicides on nodulation and seed yield of soybeans
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.L. Greenfield --- Department of Agronomy, Republic of South AfricaField trials were conducted on soybeans (Glycine max (L.) Merr.) in a hot, dry environment under irrigation and a warm, moist environment on soils on which the crop had not previously been grown. The aim was to assess the effectiveness... -
The effects of various seed treatments on the germination, coleoptile length and emergence of South African winter wheats (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Purchase --- Small Grain Centre, Republic of South Africa J. le Roux --- Small Grain Centre, Republic of South Africa H.A. van Tonder --- Small Grain Centre, Republic of South AfricaThe effect of four seed treatments and storage period of treated seed on the germination, coleoptile length and emergence of five winter wheat genotypes was investigated. The first trial was conducted under controlled conditions to determine the effect of triadimenol,... -
The use of a sewage sludge as a fertilizer for wheat in a glasshouse pot experiment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.C. Hughes --- Department of Agronomy, Republic of South Africa A.D. Noble --- Department of Agronomy, Republic of South Africa S. Scott-Brown --- Department of Agronomy, Republic of South AfricaAcid soil infertility is a major limiting factor in crop production on soils along the eastern seaboard of South Africa. Invariably this problem is addressed by effectively liming the topsoil with little influence on subsoil acidity. A study was conducted... -
Kompetisie tussen koring (Triticum aestivum L.) en Bromus diandrus I. Invloed op vegetatiewe groei
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.M. Ferreira --- Departement Landbou-ontwikkeling, Republiek van Suid-Afrlka G.A. Agenbag --- Departement Akkerbou en Weiding, Republiek van Suid-AfrikaDie doel van hierdie studie was om die kompetisievermoë van koring (Triticum aestivum L.) en Bromus diandrus Roth, te vergelyk in terme van vegetatiewe groei in veldproewe. Die proewe is ontwerp as 'n verpla- singsmodel met sewe populaslesamestellings (behandelings) en... -
Reaksie van twee lentekoringkultivars op stikstof- en swaelbemesting in die Swartland. I. Vegetatiewe groei, opname en konsentrasie van stikstof en swael in die vegetatiewe plant
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P. du Plessis --- , Republiek van Suid-Afrika G.A. Agenbag --- Departement Akkerbou en Weidlng, Republiek van Suid-AfrikaDie belangrikheid van die korrekte N: S verhouding het die vraag laat ontstaan of 'n wanbelans tussen N en S nie gedeeltelik 'n bydrae tot die swak benuttingsdoeltreffendheid van N by hoë N-bemestings in die Swartland kan lewer nie. 'n... -
Reaksie van twee lengtekoringkultivars op stikstof- en swaelbemesting in die Swartland. II. Opbrengs en bakkwaliteit
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P. du Plessis --- , Republiek van Suid-Afrika G.A. Agenbag --- Departement Akkerbou en Weiding, Republiek van Suid-AfrikaIn die Swartlandkoringproduksiegebied is daar oor die afgelope tien jaar 'n daling in die gemiddelde prote'ieninhoud en bakkwaliteit van koring ondervind, selfs ten spyte van verhoogde stikstofbemesting. Die belangrikheid van die korrekte N: S verhouding het die vraag laat ontstaan... -
Managing certain recently named Lr genes in breeding wheat for resistance to Puccinia recondita f. sp. tritici in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Z.A. Pretorius --- Department of Plant Pathology, Republic of South Africa B.D. van Niekerk --- Department of Plant Pathology, Republic of South Africa F.J. Kloppers --- Department of Plant Pathology, Republic of South Africa A.L. Vorster --- Department of Plant Pathology, Republic of South AfricaFive new or locally unexploited Lr genes were evaluated as sources of resistance to leaf rust (Puccinia recon- dita Rob. ex Desm. f. sp. tritici) of wheat (Triticum aestivum L.) in South Africa. The expression of Lr36, Lr41 and Lr42,... -
Field evaluation of leaf rust severity, yield loss and quality characteristics in near-isogenic wheat lines with Lr29, Lr35 or Lr37
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F.J. Kloppers --- Department of Plant Pathology, Republic of South Africa Z.A. Pretorius --- Department of Plant Pathology, Republic of South Africa D. van Lill --- Small Grain Centre, Republic of South AfricaThe potential of three Lr genes in the wheat lines RL6080 (Thatcher*6/Lr29), RL6081 (Thatcher*8/Lr37) and RL6082 (Thatcher*6/Lr35) was evaluated in field experiments. Leaf rust reaction types on flag leaves of lines with Lr29, Lr35 or Lr37 varied between resistance and... -
The effects of tillage systems on soil bulk density and penetrometer resistance of a sandy clay loam soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.T. Steyn --- Small Grain Centre, Republic of South Africa J. P.C. Tolmay --- Small Grain Centre, Republic of South Africa J.J. Human --- Department of Agronomy, Republic of South Africa W.H. Kilian --- Small Grain Centre, Republic of South AfricaConcern has been expressed that reduced tillage systems may lead to excessive soil compaction, with a negative impact on crop growth. The objectives of this study were to determine the effects of different tillage systems, namely, minimum tillage (disc and... -
Die invloed van grondbewerking op vroeë wortelontwikkeling en biomassa van koringkultivars (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.T. Steyn --- , Republiek van Suid-Afrika J. P.C. Tolmay --- , Republiek van Suid-Afrika J.J. Human --- Departement Agronomie, Republiek van Suid-AfrikaDit is bekend dat 'n goeie wortellengte en/of worteldigtheid in die eerste paar weke belangrik is om goeie saailingvestiging te verkry. Die doel van hierdie studie was om die uitwerking van minimumbewerking (wisselgangskotteleg en vlerkskaar), beitelploeg- en konvensionele bewerking op... -
Effect of yellow berry on yield and protein composition of spring wheat (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.C. Raath --- Department of Agriculture, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South AfricaYellow berry is a physiological condition in wheat which is associated with nitrogen stress. Results from an experiment where some treatments resulted in unusually large percentages of yellow berry kernels indicated a negative relationship between the incidence of yellow berry... -
Evaluation of proline accumulation as an indicator of drought tolerance in spring wheat cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. D.R. van Heerden --- Department of Botany, Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South AfricaThe aim of this study was to evaluate proline accumulation as an indicator of drought stress and drought tolerance in spring wheat cultivars (Triticum aestivum L.) grown in the Western Cape. Drought stress was induced in whole plants and leaf... -
Seedling and adult plant resistance to leaf rust in the wheat cultivar Tugela
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Z.A. Pretorius --- Department of Plant Pathology, Republic of South Africa F.J. Kloppers --- Department of Plant Pathology, Republic of South AfricaThe South African bread wheat cultivar Tugela has consistently displayed effective field resistance to leaf rust, caused by Puccinia recondita Rob. ex Desm. f. sp. tritici. Based on its pedigree and adult plant reaction to leaf rust, it has been... -
Evaluation of the relative water content and the reduction of 2,3,5-triphenyltetrazoliumchloride as indicators of drought tolerance in spring wheat cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. D.R. van Heerden --- Department of Botany, Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South AfricaThe aim of this study was to evaluate the relative water content and the reduction of 2,3,5-triphenyltetrazoliumchloride, as indicators of drought stress and drought tolerance in spring wheat cultivars (Triticum aestivum L.) grown in the Western Cape. Drought stress was... -
Assessment of macroscopic components of leaf rust resistance in wheat genotypes containing Lr12 and Lr13
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.M. Bender --- Department of Plant Pathology, South Africa Z.A. Pretorius --- Department of Plant Pathology, South Africa J.J. Spies --- Department of Botany and Genetics, South AfricaMonogenic resistance in wheat (Triticum aestivum L.) to leaf rust, caused by Puccinia recondita Rob. ex. Desm. f. sp. tritici, has generally not been durable. Durable resistance, as well as an improved expression of resistance, have been associated with Lr... -
Interaction between cultivar and soil fertility on grain yield, yield components and grain nitrogen content of wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: LewisA. Metho --- Department of Plant Production and Soil Science, South Africa P.S. Hammes --- Department of Plant Production and Soil Science, South Africa J.M. de Beer --- Department of Plant Production and Soil Science, South Africa H.T. Groeneveld --- Department of Statistics, South AfricaThe effect of soil nutrient status on the performance of four wheat cultivars was studied in a long-term field experiment at the University of Pretoria. The objective was to quantify the effect of soil nutrient status on yield, yield components... -
Sources of variation for yield, protein content and hectolitre mass of spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Nel --- Department of Agronomy and Pastures, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa J.L. Purchase --- , Republic of South AfricaIn the Western and Southern Cape the quality of wheat varies annually due to variable climatic conditions. This holds a commercial risk to the milling and baking industries in delivering the refined products to their respective clients. It is, therefore,... -
A comparison of two methods of inducing water stress in wheat (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. Strauss --- Department of Agronomy and Pastures, G.A. Agenbag --- Department of Agronomy and Pastures,The aim of this study was to compare the withholding of water and the use of polyethylene glycol (PEG) as methods of inducing water stress in spring wheat cultivars (Triticum aestivum L.) grown in the Western Cape. Water stress was... -
Investigation of the suitability of Western and Southern Cape wheat flour for production of traditional South African steamed bread
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. Manley --- Department of Food Science, Republic of South Africa M.M. Nel --- Department of Agronomy and Pastures, Republic of South AfricaDue to a lack of electrical ovens, it is often found that in the households of the lower-income communities, a home-made steamed bread is prepared in a saucepan on a gas cooker or an open fire. The requirements of flour... -
Sources of variation in spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. I. Milling and dough development characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Nel --- Department of Agronomy and Pastures, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa J.L. Purchase --- , Republic of South AfricaApproximately 90% of the annual wheat crop produced in the Republic of South Africa is milled into flour for bread-baking purposes. The percentage of flour extracted, as well as the dough development properties, determine the milling and dough mixing characteristics... -
Sources of variation in spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. II. Baking characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Nel --- Department of Agronomy and Pastures, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa J.L. Purchase --- , Republic of South AfricaProtein content and quality determine flour quality, as well as the success of bread-baking. The stability of wheat quality characteristics is of great importance to the milling and baking industry, who have to produce an end product of acceptable and... -
Optimisation of transient transformation of a South African spring wheat cultivar with particle bombardment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.M. de Villiers --- , Republic of South Africa Y. Laib --- Centre de Developement des Techniques Nuclear, AlgeriaTransient transformation was optimised for bread wheat, Triticum aestivum L. cv Kariega, using a particle inflow gun constructed at ARC-Roodeplaat. Excised immature embryos, cultured in vitro for 5 to 7 days, were bombarded with pAHC25 and analysed for the presence... -
The harvest index of individual ears of four South African wheat (Triticum aestivum L.) cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.A. Metho --- Department of Agriculture and Environmental Affairs KwaZulu-Natal, Technology Development and Training (FSR), Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South AfricaIncreasing the harvest index is a major route to higher yields in regions where a crop has had a lengthy period of selection and adaptation. No information could be found on differences in the harvest indices of the main stems... -
Genotype variation in regeneration and transient expression efficiencies of 14 South African wheat cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. Lacock --- , Republic of South Africa A-M. Botha --- , Republic of South AfricaFourteen spring and winter hard red South African wheat (Triticum aestivum L.) cultivars were compared for their regeneration and transient anthocyanin expression efficiencies. Embryonic and non-embryonic callus, as well as plantlets, were obtained from all the cultivars cultured on a... -
An evaluation of three Sr27-carrying wheat × rye translocations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- Department of Genetics, Republic of South AfricaNear isogenic lines differing for the presence or absence of group 3 wheat x rye translocations were developed in three wheat varieties. These included a non-compensating 3AS.3RS translocation and two compensating translocations with constitutions 3AL.3RS and 3BL.3RS. Results of a... -
AFLP and RAPD markers linked to leaf rust resistance gene Lr41 in wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J-M. Lottering --- Department of Genetics, A-M. Botha --- Department of Genetics, F.J. Kloppers --- , South AfricaRAPD (random amplified polymorphic DNA) and AFLP (amplified fragment length polymorphism) analyses were used to identify molecular markers linked to the leaf rust resistance gene Lr41. Bulk and parental lines were screened with 380 RAPD primers and 64 AFLP primer... -
The impact of leaf rust on spring wheat in the winter rainfall region of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. H.P. Boshoff --- , Republic of South Africa Z.A. Pretorius --- Department of Plant Pathology, Republic of South Africa B.D. van Niekerk --- , Republic of South AfricaIn a field trial established near Malmesbury in the Western Cape during 1999 the effect of Puccinia triticina on yield and quality of the bread wheat (Triticum aestivum L.) cultivar SST 75 was determined. Information on the efficacy of different... -
Fungicide efficacy and the impact of stripe rust on spring and winter wheat in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. H.P. Boshoff --- , Republic of South Africa Z.A. Pretorius --- Department of Plant Sciences, Republic of South Africa B.D. van Niekerk --- , Republic of South AfricaField trials were conducted from 1997 to 1999, in both the winter and summer rainfall areas of South Africa, to determine the effect of Puccinia striiformis Westend, f. sp. tritici Erikss. on yield and quality of bread wheat (Triticum aestivum... -
Clay mineral associations in soils formed under Mediterranean-type climate in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Bühmann --- , South Africa J.P. Nell --- , South Africa M. Samadi --- , South AfricaThe objective of the study was to determine clay mineral associations in soils of the winter rainfall area of South Africa and to relate them to dominant soil-forming factors. Clay mineral compositions from 69 profiles, involving 190 samples, were determined... -
Inheritance of resistance to Uromyces appendiculatus in the South African dry bean cultivar Kranskop
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Liebenberg --- , South Africa Z.A. Pretorius --- Department of Plant Sciences, South AfricaThe inheritance of resistance to race RSA-Ua7 of the rust pathogen Uromyces appendiculatus in the South African dry bean (Phaseolus vulgaris) cultivar Kranskop, as well as the relationship of rust resistance between Kranskop and the international rust differential cultivars Redlands... -
Breeding for rust resistance increases dry bean productivity in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Liebenberg --- , South Africa A.J. Liebenberg --- , South Africa Z.A. Pretorius --- Department of Plant Sciences, South AfricaInfection of dry beans (Phaseolus vulgaris L.) by rust, caused by Uromyces appendiculatus Pers.: Pers. (Unger), results in regular yield and quality losses in South Africa. The growing of resistant varieties is generally considered the most cost effective control measure... -
Yield retention of resistant wheat cultivars, severely infested with Russian wheat aphid, Diuraphis noxia (Kurdjumov), in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: VickiL. Tolmay --- , South Africa CS van Deventer --- Department of Plant Breeding, South AfricaRussian wheat aphid, Diuraphis noxia (Kurdjumov), has been a serious pest of wheat in South Africa since 1978. Wheat producers observed that resistant cultivars, developed for control of this aphid, differed in resistance and questioned whether insecticide treatment would be... -
Associations of yield and yield components among selected durum wheats (Triticum turgidum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. Shimelis --- , South AfricaAssociations of seed yield (SY) and important agronomic traits were studied among selected durum wheats (Triticum turgidum L.) to establish the relationship and pinpoint the best selection criteria. Controlled glasshouse studies were conducted over two years (2002–2003) using 14 diverse... -
Effect of segregation distortion on genetic mapping of a PI 294994-derived Russian Wheat Aphid resistance gene
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- Department of Genetics, South Africa W. Boshoff --- , South Africa F. du Toit --- , South AfricaAn earlier genetic mapping study with an unidentified Russian Wheat Aphid resistance gene, referred to as Dn? and derived from PI 294994, suggested that the gene occurs close to the centromere on 7DS. Closer inspection of the map data showed... -
Grain yield, nitrogen uptake and use efficiency components of South African irrigation wheat cultivars under different nitrogen management strategies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.M. Otto --- , South Africa C.C. du Preez --- Department of Soil, South AfricaThe effect of different N management strategies on the grain yield, N uptake and use efficiency components of five commercial wheat cultivars were investigated for two consecutive years at Riet River and Loskop irrigation schemes. The cultivars ranged ingrowth period... -
Effects of relay inter-cropping summer cover crops with maize on cover crop biomass and maize yields in a warm-temperate region of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F.S. Murungu --- Department of Agriculture, South Africa C. Chiduza --- Department of Agronomy, South Africa P. Muchaonyerwa --- Department of Agronomy, South AfricaLittle research attention has been given to growing summer cover crops as part of conservation agriculture systems. Three cover crops (sorghum [Sorghum bicolor], mucuna [Mucuna pruriens] and sunhemp [Crotalaria juncea]) were relay-intercropped into maize [Zea mays] 42 days after planting... -
Growth, yield and grain protein content of wheat (Triticum aestivum L.) in response to nitrogen fertiliser rates, crop rotation and soil tillage
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: GA Agenbag --- Department of Agronomy, South AfricaSoil tillage affects both the profitability and sustainability of cropping systems. Minimum- and no-tillage systems are promoted because research has shown that these systems may reduce production costs and improve biological sustainability when compared to conventional systems, in which mouldboard... -
Carbon stocks in fynbos, pastures and vineyards on the Agulhas Plain, South Africa: a preliminary assessment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AJ Mills --- Department of Soil Science, South Africa SC Birch --- , South Africa JD Stephenson --- , South Africa RV Bailey --- , South AfricaLarge tracts of fynbos on the Agulhas Plain are being converted to agriculture. Carbon (C) stocks in fynbos, pastures and vineyards were measured in this preliminary study to determine whether conservation of fynbos results in greater C storage relative to... -
Biomass production, weed suppression, nitrogen and phosphorus uptake in white oat (Avena sativa L.) and grazing vetch (Vicia dasycarpa L.) cover crop bicultures under an irrigated no-till system
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L Muzangwa --- Department of Agronomy, Faculty of Science and Agriculture, South Africa C Chiduza --- Department of Crop Science, School of Agricultural Sciences, South Africa P Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South AfricaCultivation of a multipurpose cover crop is of interest to Eastern Cape farmers experiencing soil infertility and weed pressures. The objective of the study was to investigate effects of oat–vetch bicultures on biomass production, weed suppression, and nitrogen (N) and... -
A vetch winter cover crop can improve response to nitrogen fertiliser and profitability of no-till maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ernest Dube --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pardon Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South AfricaA high nitrogen (N) fertiliser requirement can be a deterrent to the adoption of conservation agriculture (CA). A field trial was carried out to test whether a high biomass-yielding vetch (Vicia dasycarpa L.) winter cover crop can be used to... -
A review of orange roughy Hoplostethus atlanticus fisheries, estimation methods, biology and stock structure
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: T. A. BranchOrange roughy Hoplostethus atlanticus are unusual fish. They form dense aggregations that have fuelled lucrative fisheries at great depths (600–1 400 m), especially off Namibia, New Zealand and Australia. They are thought to be very long-lived (>100 years, maturity at... -
Reseeding of mussels on denuded rocky shores: preliminary studies with the brown mussel Perna perna
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: A. H. Dye N. DyantyiA method is developed to establish clumps of mussels Perna perna in denuded areas on high-energy rocky shores on the south-east coast of South Africa. A total of 20 small (20–30 mm total length) mussels is placed under a 30... -
Population dynamics and potential yield of three species of giant winkles in the Western Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: A. Pulfrich T. A. BranchOf the southern African intertidal and shallow subtidal trochid and turbinid gastropods, Turbo sarmaticus, T. cidaris and Oxystele sinensis, are the most abundant large species, and therefore obvious targets for a winkle fishery. T. sarmaticus is harvested by recreational snorkel... -
THF DISTRIBUTION AND STATUS OF KNERIA AURICULATA (PELLEGRIN)(PISCES: KNERIIDAE) IN THE TRANSVAAL
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: C.J. Kleynhans --- , South AfricaThe distribution of Kneria auriculata in the upper reaches of the Crocodile River (Incomati River System) was determined. Knevia auriculata shows a preference for cold mountain streams with calm pools. Five isolated populations exist in such streams. Although no accurate... -
THE USE OF BENZOCAINE HYDROCHLORIDE AS FISH TRANQUILLIZER AND ANAESTHETIC IN SALINE WATERS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: W.T. Barham --- Department of Zoology, South Africa K.M. Caiger --- Department of Zoology, South Africa J. G.J. Visser --- Department of Zoology, South AfricaThe anaesthetic effects of various concentrations of benzocaine hydrochloride were tested on Liza macrolepis and Sarotherodor mossambicus in sea water and diluted sea water, respectively. Induction time for anaesthesia was negatively correlated with increasing anaesthetic concentrations in L. macrolepis. -
LEAF AREA AS A MEASURE OF STANDING CROP OF FLOATING AQUATIC MACROPHYTES
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.C. Keulder --- Department of Botany, South AfricaLeaf area is evaluated as a measure of standing crop of Salvinia molesta Mitchell and Azolla filiculoides Lam. cultures under controlled conditions. Growth rates as derived from leaf area determinations agreed with pigment extractions and fresh and dry weight measures... -
A PRELIMINARY ASSESSMENT OF THE IMPACT OF SOME ASPECTS OF THE HARTBEESPOORT DAM ENVIRONMENT ON PRODUCTION OF THE MAJOR FISH SPECIES
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: K.L. Cochrane --- , South AfricaThe dominant species of fish in Hartbeespoort Dam, in terms of mass composition of catches, are shown to be Oreochromis mossambicus (Peters), Cyprinus carpio Linnaeus and Clarias gariepinus Burchell. Minimum winter temperatures are demonstrated to have a major impact on... -
NUTRIENTS AND THE PRODUCTIVITY OF ESTUARINE AND COASTAL MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: S.W. Nixon --- Marine Ecosystems Research Laboratory, United States of America C.A. Oviatt --- Marine Ecosystems Research Laboratory, United States of America J. Frithsen --- Marine Ecosystems Research Laboratory, United States of America B. Sullivan --- Marine Ecosystems Research Laboratory, United States of AmericaRecent research on estuarine and coastal marine systems has revealed two particularly interesting things about nutrients and productivity. First is the observation that these areas are among the most intensively fertilized environments on earth. Second is the common finding that... -
DECOMPOSITION IN ESTUARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: MH Schleyer --- , South AfricaThe varied sources of estuarine plant detritus and the processes and organisms involved in its decomposition are discussed in this review. In the case of emergent and peripheral vegetation, microbial decomposition commences in the phylloplane, with fairly rapid leaching of... -
SOME POPULATION CHARACTERISTICS OF THE BIVALVES OF THE PONGOLO RIVER FLOODPLAIN
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: C.C. Appleton --- Department of Zoology and Entomology, South Africa P. la Hausse de Lalouvieret --- , South AfricaEstimates of the density, structure and standing crop of populations of the freshwater bivalve molluscs Caelatura framesi, Aspatharia wahlbergi and Corbicula africana on the Pongolo River floodplain were made from the samples of shells stranded in the mud of several... -
ASPECTS OF THE ECOLOGY OF KNERIA AURICULATA (PELLEGRIN, 1905) (PISCES: KNERIIDAE) FROM THE EASTERN TRANSVAAL SOUTH AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: C.J. Kleynhans --- Transvaal Directorate of Nature Conservation, South AfricaSeven natural populations of Kneria auriculata occur in tributaries of the Crocodile River (Incomati System) on the eastern Transvaal escarpment. The routes it probably used to colonize these streams are discussed and used to explain its current restricted distribution with... -
FLUX OF INORGANIC NUTRIENTS AND PARTICULATE CARBON BETWEEN A SPARTINA MARITIMA SALT MARSH AND THE SWARTKOPS ESTUARY, EASTERN CAPE
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: D. Baird --- Department of Zoology, South Africa P. E.D. Winter --- Department of Zoology, South AfricaThe flux of dissolved inorganic nutrients (NH4-N, NO2-N, NO3-N, SRP) and suspended particulates (particulate organic carbon POC, and particulate inorganic carbon PIC) was measured across the mouth of a small creek draining a portion of the intertidal Spartina salt marsh... -
THE EFFECT OF SUBLETHAL CONCENTRATIONS OF NATURAL SUSPENDED SILT ON ROUTINE OXYGEN CONSUMPTION BY MOZAMBIQUE TILAPIA (OREOCHROMIS MOSSAMBICUS)
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: HeinH. du Preez --- Department of Zoology and Research Unit for Aquatic and Terrestrial Ecosystems, South Africa L. Smit --- Department of Zoology and Research Unit for Aquatic and Terrestrial Ecosystems, South Africa G.J. Steyn --- Department of Zoology and Research Unit for Aquatic and Terrestrial Ecosystems, South Africa Y. Buermann --- Department of Zoology and Research Unit for Aquatic and Terrestrial Ecosystems, South AfricaExposure of adult Oreochromismossambicusto sublethal concentrations (5 to 20 g silt ℓ−1) of natural silt from the Phalaborwa Barrage altered routine oxygen consumption by causing increased rates of oxygen consumption. This indicates that sublethal levels of suspended silt result in... -
GENETIC VARIATION IN TWO POPULATIONS OF THE ORANGE ROUGHY (HOPLOSTETHUS ATLANTIC US) FROM NAMIBIA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: N. S. Flint --- , , South Africa F. H. van der Bank --- , , South Africa P. J. Theron --- , , South Africa A. Staby --- , NamibiaThe orange roughy (Hoplostethus atlanticus) is a relatively new commercially exploited fish species, but it is currently ranked third amongst the world's top five seafood products. Gene products of 22 protein coding loci in two populations off the coast of... -
Dry matter yield and quality of five annual subtropical fodder crops at different irrigation levels
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: D Marais N F G Rethman J G AnnandaleMaize, soybean, cowpeas, fodder sorghum and pearl millet were cultivated in a small plot trial under a rain shelter. The crops were subjected to four irrigation levels. The yields of fodder sorghum and pearl millet were better under severely water... -
Dry matter yield and water use efficiency of five perennial subtropical grasses at four levels of water availability
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: D Marais N Rethman J AnnandaleThe effect of four levels of water availability on the yield and water use efficiency (WUE) of five subtropical perennial grasses was evaluated in a small plot trial under a rain shelter. The soil profiles were brought to 100% (W4... -
Influence of leguminous and non‐leguminous woody plants on the herbaceous layer and soil under varying competition regimes in mixed Bushveld1
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G.N Smit --- Department of Agriculture, Republic of South Africa J.S. Swart --- Department of Agriculture, Republic of South AfricaFive plots on sandy soil were thinned to differing tree densities. Three subhabitats were distinguished, viz. under leguminous trees, under non‐leguminous trees, and between tree canopies. Soil under both leguminous and non‐leguminous trees was richer in nutrients (% total N,... -
Effects of plant density on forage production in five populations of kleingrass
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B.A. Young --- USDA‐ARS, United States C.R. Tischler --- USDA‐ARS, United StatesKleingrass (Panicum coloratum L.) forage yield evaluation plots are often established at a density of 6.0 plants m‐2 to accommodate mechanical transplanting and harvesting equipment. However, forage crops are usually established from seed at higher plant densities. Experiments were conducted... -
Soil nutrient ecology associated with Acacia sieberana at different tree densities in a South African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C. Roos --- Department of Terrestrial Ecology and Nature Conservation, The Netherlands N. Allsopp --- ARC Range and Forage Institute, c/o Botany Department, Republic of South AfricaThree aspects of soil nutrient ecology in an Acacia sieberana savanna were studied. First, information was collected about the effects of the savanna tree species Acacia sieberana on soil fertility, in terms of isolated tree effects and in terms of... -
The ‘youth and agriculture’ problem: implications for rangeland development
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MelvinB Swarts --- Agricultural Research Council–Animal Production Institute, c/o Department of Biodiversity and Conservation Biology, South Africa Michael Aliber --- Institute for Poverty, Land and Agrarian Studies, South AfricaThere is a common perception in South Africa that the youth are not interested in agriculture, leading to two concerns: first, that this is exacerbating the youth unemployment crisis, and second, that the already low levels of agricultural activity in... -
Precision forestry for pulpwood re-establishment silviculture
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Robert Neil PallettThe Southern African pulp and paper industry has a strong export focus and operates in an open global market. In a global context, wood is a commodity product and an ongoing strategy of reduction in the unit cost of timber... -
The effect of planting density on the wood quality of South African-grown Eucalyptus grandis
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F.S. MalanThis paper presents the results of a wood property and sawn board quality study performed on disc samples and sawlogs taken from a 23-year-old Eucalyptus grandis Nelder 1a spacing trial at J.D.M. Keet plantation near Tzaneen. Ten trees from each... -
Silviculture and Genetics of Pinus kesiya for Planting Degraded Pasture Land
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J.A. Wright --- , USA N. Isaza --- , USAThe conifer species, Pinus kesiya Royle ex Gordon, is an important part of the ecology within the indigenous range of South-east Asia as well as in sustainably managed plantations in a number of countries. Planting with the species in Colombia... -
Addressing Urgent Community Mental Health Needs in Rwanda: Culturally Sensitive Training Interventions
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lisa Lopez Levers --- Duquesne University, USA Desire Kamanzi --- Kigali Health Institute, Rwanda Donatilla Mukamana --- Kigali Health Institute, Rwanda Kirrily Pells --- Institute of Commonwealth Studies, University of London, Dan-Bush Bhusumane --- Duquesne University and University of Botswana,Rwandan leaders in the health and educational sectors have begun to discuss the necessity for establishing culturally appropriate community-based mental health counselling services in Rwanda, especially trauma counselling. The need for a community psychology approach is anchored in the lingering... -
Teacher Ratings and Standardised Test Scores: How Good for Predicting Achievement in Students with Learning Support Placement?
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Levison Maunganidze --- Zimbabwe Open University, Nancy Ruhode --- Zimbabwe Open University, Loice Shoniwa --- Zimbabwe Open University, Solomon Nyanhongo --- Midlands State University, Joseph M. Kasayira --- Midlands State University, Tholene Sodi --- University of Venda, South AfricaThe study analysed the relationships between teacher ratings and standardised test scores in Reading and Mathematics for students receiving learning support for learning difficulties (n = 60, mean age= 16.3). Teacher ratings were found to significantly predict pupils' performance in... -
Self-Perceived Multicultural Counseling Competencies in South African Psychologists: A Basis for Practice Guidelines
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Humphrey S. B. Ngcobo --- University of Zululand, Stephen D. Edwards --- University of Zululand,The study sought to explore multicultural counseling competences that are relevant for the South African context, in order to advance appropriate multicultural competent theory and practice. A total of 271 psychologists on the national register participated 109 Clinical, 79 Counselling,... -
Perceived Challenges in the Self-Management of Essential Hypertension in South African Settings
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Karel F.H. Botha --- North-West University, Wynand F. du Plessis --- North-West University,The study investigated the subjective experiences of Essential Hypertension (EH) in a sample of urban white Afrikaans-speaking (n=25) and black Sotho-speaking (n=25) patients. Measures of self-management were obtained and their subjective experience of EH and its self-management was explored during... -
Sexuality Education in South Africa: Wedged within a Triad of Contradictory Values
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dennis A. Francis --- University of the Free State, South AfricaFew studies have investigated how teachers teach sexuality within the Outcomes-Based Life Orientation programme. This desktop review investigates sex and sexuality teaching practices in the classroom. First it gives a brief overview of the curriculum requirements for sexuality education. Secondly,... -
Perceived Stress by Senior Secondary School Educators in a South African School District
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Reynold Abraham Sonn --- Walter Sisulu University,This study investigated perceptions of work-related stress as experienced by school personnel in a South African school district. Participants were senior secondary high school educators from five schools (n= 20, mean age = 38.6, females = 12, males = 8... -
Holistic Psychology: A Brief Primer
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D. Edwards --- University of Zululand, South AfricaThis article explicates the foundations, essential themes and healing principles of holistic psychology; an approach which provides a corrective for such trends in modern scientific psychology as disciplinary perspectives, the overemphasis on the economics and politics of professionalism. Holistic psychology... -
Use of a simulation game for HIV/AIDS education with pre-service teachers
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Nadine Petersen --- Department of Education Studies, South Africa Josef de Beer --- Department of Education Studies, South Africa Helen Dunbar-Krige --- Department of Education Studies, South AfricaThe article describes the use of a simulation game in HIV/AIDS education with pre-service teachers in Johannesburg, South Africa. The use of a simulation game, as novel experiential pedagogy, was an attempt to raise awareness about HIV and AIDS and... -
The significance of gathering wild orchid tubers for orphan household livelihoods in a context of HIV/AIDS in Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: JoyceFX Challe --- Department of Research and Training, Mikocheni Agricultural Institute, Tanzania Anke Niehof --- Sociology of Consumers and Households Group, The Netherlands PaulC Struik --- Centre for Crop System Analysis, The NetherlandsWe investigated the role of gathering and selling the edible tubers of wild orchids by children orphaned by AIDS as one of their livelihood strategies, through a household survey administered to 152 households in three villages in the Southern Highlands... -
Treating ‘AIDS blindness’: A critical pedagogical approach to HIV education at tertiary level
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lesley Wood --- COMBER, Faculty of Education Sciences, South Africa Julialet Rens --- COMBER, Faculty of Education Sciences, South AfricaHIV and AIDS affect all South Africans, irrespective of gender, race, age and economic status. Teachers should therefore be able to meaningfully integrate HIV content into the school curriculum. However, pre-service teacher education programmes still do not pay adequate attention... -
Proportional growth and maturation in Penaeus indicus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HFB ChampionA least squares estimation of inflected linear regression is used to interpret the relationships between carapace length (CL) and total length, abdominal length and abdominal width respectively, in Penaeus indicus and Metapenaeus monoceros. In both species well-defined inflection points with... -
Sublethal effects of manganese on the haematology and osmoregulation of Oreochromis mossambicus after acute exposure
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Barnhoorn JHJ van VuurenOreochromis mossambicus were exposed for 96 hours to sublethal manganese concentrations in a continuous flow-through system. The sublethal concentrations were determined from the LC50 value of manganese (1.723mg/l), which included a 10% (172.3mg/l), 15% (259.8mg/l) and 20% (345.6mg/l) concentration of... -
Predation on snails by an indigenous fish, Sargochromis codringtonii, in ponds in Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari H MadsenThe extent to which Sargochromis codringtonii (a known predator of snails) can control snail numbers was investigated in cementlined ponds in order further to evaluate the fish's potential as an agent for the biological control of fresh water snails, especially... -
Effects of three agricultural by-products on cage culture growth performances of a landlocked population of Sarotherodon melanotheron (Teleostei: Cichlidae) in man-made Lake Ayame, Côte d'Ivoire
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NI Ouattara V N'Douba GG Teugels JC PhilippartIn man-made Lake Ayame, a 180-day cage culture feeding trial was conducted to investigate the effects of three agricultural by-products — chicken droppings, wheat bran and corn bran — on the survival rates, mean daily weight gain and feed conversion... -
Assessing the true status of the fish species Labeo cylindricus (Peters 1868) (Teleostei: Cyprinidae) in Lake Baringo, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Britton DM Harper -
The food and feeding habits of five freshwater and brackish-water fish species in Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PO Ajah MN Georgewill MO AjahThe food and feeding habits of five economically important fresh-and brackish-water fishes, Channa obscura, Chrysichthys nigrodigitatus, Heterotis niloticus, Synodontis nigrita and Trachinotus maxillosus, were investigated. A number of techniques were used to carry out gut content analysis, including the Hynes... -
The toxicity of zinc to a selected macroinvertebrate, Adenophlebia auriculata (Ephemeroptera, Leptophlebiidae): method development
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: V Everitt --- Centre for Aquatic Toxicology, South Africa P-A Scherman --- Centre for Aquatic Toxicology, South Africa MH Villet --- Department of Zoology and Entomology, South AfricaThe South African water quality guidelines for the protection of the aquatic environment are constantly being updated. The Centre for Aquatic Toxicology of the Institute for Water Research, Rhodes University, uses artificial streams and toxicological methods to contribute to the... -
The effect of copper and zinc at neutral and acidic pH on the blood coagulation of Oreochromis mossambicus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: G Nussey --- Department of Zoology, South Africa J HJ van Vuren --- Department of Zoology, South Africa HH du Preez --- Department of Zoology, South AfricaThe effect of copper and zinc on fish blood coagulation under alkaline and acidic conditions and the possible occurrence of disseminated intravascular clotting under these conditions have been poorly studied to date. -
The effect of copper and zinc at neutral and acidic pH on the general haematology and osmoregulation of Oreochromis mossambicus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: G Nussey --- Department of Zoology, South Africa J HJ van Vuren --- Department of Zoology, South Africa HH du Preez --- Department of Zoology, South AfricaThe objective of this study was to determine the effect of sublethal copper and zinc concentrations at a neutral and an acidic pH, on selected haematological parameters as well as on the total osmolality and electrolyte concentrations of Oreochromis mossambicus... -
The effect of largemouth bass Micropterus salmoides on aquatic macro-invertebrate communities in the Wit River, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PSR Weyl --- Department of Zoology and Entomology, South Africa FC de Moor --- Department of Zoology and Entomology, South Africa MP Hill --- Department of Zoology and Entomology, South Africa OLF Weyl --- , South AfricaFish predation is one of the driving forces of freshwater invertebrate community structures, with alien predators having a pronounced effect. A quantitative assessment of aquatic invertebrates in the Wit River, Sundays River catchment, Eastern Cape, South Africa, was undertaken to... -
Factors governing the removal of faecal indicator bacteria in the ecosystem of Lake Timsah, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Bahgat --- Department of Botany,Persistence of faecal coliforms, presumptive Vibrio cholerae and Vibrio parahaemolyticus at three stations in Lake Timsah were investigated in 2010. Samples were collected by day and at night. Bacterial counts were highest at the outlet of wastewater discharged into the... -
The effect of feeding regimen on growth, food conversion ratio and size variation in juvenile dusky kob Argyrosomus japonicus (Teleostei: Sciaenidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Kaiser --- Department of Ichthyology and Fisheries Science, South Africa PD Collett --- Department of Ichthyology and Fisheries Science, South Africa NG Vine --- Department of Ichthyology and Fisheries Science, South AfricaTemperature, feeding frequency and feeding intensity are important determinants of fish growth in aquaculture. As part of a research and development programme to optimise husbandry techniques for a new mariculture species, the dusky kob, Argyrosomus japonicus, this study tested the... -
Spatial and temporal patterns of phytoplankton abundance and composition in three ecological zones in the Tanzanian waters of Lake Victoria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GW Ngupula --- , Tanzania ASE Mbonde --- , Tanzania CN Ezekiel --- , TanzaniaPhytoplankton abundance and composition in relation to physico-chemical parameters were investigated from September 2005 to October 2007 at 51 stations of various depths in the nearshore, intermediate and deep offshore waters of Lake Victoria. Shallow nearshore waters had the highest... -
Histopathological changes in two potential indicator fish species from a hyper-eutrophic freshwater ecosystem in South Africa: a baseline study
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Marchand --- Department of Zoology, South Africa JC van Dyk --- Department of Zoology, South Africa IEJ Barnhoorn --- Andrology, Department of Urology, South Africa GM Wagenaar --- Department of Zoology, South AfricaHistopathological changes were identified in selected target organs from two freshwater fish species, Clarias gariepinus and Oreochromis mossambicus, inhabiting the hyper-eutrophic Roodeplaat Dam near Pretoria. A histology-based fish health assessment protocol was used, including a semiquantitative histopathological assessment of the... -
Evaluation of the fish health assessment index in the Olifants River system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RM Watson --- Department of Zoology, South Africa D Crafford --- Department of Zoology, South Africa A Avenant-Oldewage --- Department of Zoology, South AfricaThe fish health assessment index (HAI) biomonitoring technique, developed in the USA and subsequently tested in South Africa, was re-evaluated in the Olifants River system using Clarias gariepinus, Oreochromis mossambicus and Labeobarbus marequensis during drought and flood conditions in 1994–1997... -
A comparison of diel feeding pattern, ingestion and digestive efficiency of Oreochromis niloticus and Oreochromis macrochir in Lake Chivero, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LT Marufu --- Department of Biological Sciences, Zimbabwe PC Chifamba --- Department of Biological Sciences, ZimbabwePossible reasons why Oreochromis niloticus have supplanted Oreochromis macrochir as the main commercial fish species in Lake Chivero, Zimbabwe, were investigated in 2006. Diel feeding trends, daily food consumption and protein digestion efficiencies of the two species were compared. Both... -
Flood effects on trophic linkages of selected fish species in the littoral zone of the St Lucia estuarine system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Peer --- School of Life Sciences, South Africa NK Carrasco --- School of Life Sciences, South Africa R Perissinotto --- School of Life Sciences, South Africa SJ du Plooy --- School of Life Sciences, South AfricaThe St Lucia Estuary, a UNESCO World Heritage Site, has experienced prolonged mouth closure since 2002. Until recently it was hypersaline, but heavy rainfall between October 2010 and January 2011 led to a large overall decrease in salinity. A stable... -
Ostrich recruitment dynamics in relation to rainfall in the Mara–Serengeti ecosystem
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: JosephO Ogutu --- Institute of Crop Science, Germany Hans-Peter Piepho --- Institute of Crop Science, Germany HollyT Dublin --- Species Survival Commission, International Union for Conservation of Nature and Natural Resources, c/o Centre for Biodiversity Conservation, South AfricaAnimal population dynamics can be driven by rainfall variability through its influence on habitat suitability, availability and nutritional sufficiency of forage. To understand how rainfall influences ostriches, we related changes in ostrich recruitment in the Mara–Serengeti ecosystem to rainfall. Over... -
Boulders or urchins? Selecting seeding sites for juvenile Haliotis midae along the Namaqualand coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SWP de WaalThe extent to which the relationship between juvenile abalone Haliotis midae and sea urchins Parechinus angulosus is induced by their physical habitat along the Namaqualand coast of South Africa was investigated. Correlation analyses between the proportion of abalone utilising sea... -
The life history of the giant octopus Octopus magnificus in South African waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CD Smith JC Groeneveld G MaharajOctopus magnificus is a regular bycatch of traps set for spiny lobsters and bottom trawls for Cape hakes Merluccius spp. on the continental shelf of South Africa. Octopuses were collected from rocky substrata (traps) and soft sediments (research trawls) during... -
Operational deployment of genetic gain
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R Pallett --- , South Africa T Stanger --- , South Africa A Morris --- , South Africa C Clarke --- , South AfricaTree improvement is central to increasing plantation productivity per unit land area in many countries that rely on an exotic fast grown plantation resource as a source of wood and fibre. In order to achieve an acceptable return on the... -
Operational gain: Measuring the capture of genetic gain
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: RobertN Pallett --- Sappi Forests Research: Shaw Research Centre, South Africa Giovanni Sale --- Sappi Forests Research: Shaw Research Centre, South AfricaThe southern African forestry and forest products industry contributes two percent of the countries gross domestic product, yet is one ofthe most globalised industrial sectors. Forest product exports make up eight percent of the countries total exports and produce an... -
Guidelines for the design and management of artificial raptor perches and nest-tree stands on forestry estates in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: G. Malan --- Department of Nature Conservation Pretoria Technikon, A.vN. Marais --- Biological Diversity Services,The aim of this paper is to provide timber growers with silvicultural guidelines for the establishment of raptor perches and nest stands on forestry estates. Rodents do extensive damage to young saplings and as an ecologically friendly alternative to rodenticides,... -
The wood quality of the South African timber resource for high-value solid wood products and its role in sustainable forestry
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F.S. Malan --- ,Maximising volume growth and yield per unit area is generally recognised as an important objective towards maintaining or enhancing forest productivity. However, the forest industry's future success will also be judged on how well it understands the qualities of the... -
Effects of site management operations on the nutrient capital of a eucalypt plantation system in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Ben du Toit --- , South AfricaThe Karklo of Project is a case study ofthe effects ofintensive site management operations during the interrotational period, on (a) the nutrient capital of the system, and (b) the availability of growth resources (nutrients and water) in a commercial Eucalyptus... -
Pruning quality affects infection of Acacia mangium and A. crassicarpa by Ceratocystis acaciivora and Lasiodiplodia theobromae
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M Tarigan --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa MJ Wingfield --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa M van Wyk --- Department of Genetics, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South Africa B Tjahjono --- , Indonesia J Roux --- Department of Microbiology and Plant Pathology, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, South AfricaPruning (singling) is a common silvicultural practice in commercial Acacia plantations because these trees tend to have multiple stems. The wounds resulting from pruning are susceptible to infection by pathogens. Ceratocystis acaciivora and Lasiodiplodia theobromae have been shown recently to... -
An allometric equation for estimating stem biomass of Acacia auriculiformis in the north-eastern region of Bangladesh
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jiban Chandra Deb --- Department of Forestry and Environmental Science, Bangladesh Md. Abdul Halim --- Department of Forestry and Environmental Science, Bangladesh Enam Ahmed --- Department of Forestry and Environmental Science, BangladeshTree biomass plays an important role in sustainable management and in estimating forest carbon stocks. The objective of this study was to select the best model for measuring stem biomass of Acacia auriculiformis in the study area. Data from five... -
Comparing normal, lognormal and Weibull distributions for fitting diameter data from Akashmoni plantations in the north-eastern region of Bangladesh
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: I Kayes --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh JC Deb --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh P Comeau --- School of Forest Science and Management, Canada S Das --- Department of Statistics, School of Physical Sciences, BangladeshStatistical probability density functions are widely used to model tree diameter distributions and to describe stand structure. The objective of this study was to compare the performance of normal, logarithmic-normal and three-parameter Weibull distributions for fitting diameter data from Akashmoni... -
Stand structure and regeneration of harvested Araucaria araucana–Nothofagus stands in central Chile
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rafael M Navarro-Cerrillo --- DendrodatLab, Departamento de Ingeniería Forestal, Spain Fernando Olave --- Corporación Nacional Forestal, Chile Francisco Moreno --- DendrodatLab, Departamento de Ingeniería Forestal, Spain Sergio de Miguel --- Faculty of Science and Forestry, Finland Margarita Clemente --- Departamento de Ciencias y Recursos Agrícolas y Forestales, SpainIn this study we examined the current structure and regeneration status of mixed Araucaria araucana–Nothofagus spp. stands that had been logged 20 years ago. We measured stand density of saplings, juvenile and adult trees, as well as stand basal area... -
Gender, famine and HIV/AIDS: rethinking new variant famine in Malawi
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Andy GibbsAlthough making a large and rapid impact on our understandings of the interactions between famine and HIV/AIDS, the new variant famine hypothesis has had little critical scrutiny. This paper uses a case study of the Malawian food crisis of 2001/2002... -
KwaZulu-Natal commercial farmers' perceptions of and management responses to HIV/AIDS
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lyndon Gray --- Agricultural Economics, School of Agricultural Sciences and Agribusiness, South Africa Stuart Ferrer --- Agricultural Economics, School of Agricultural Sciences and Agribusiness, South Africa Gerald Ortmann --- Agricultural Economics, School of Agricultural Sciences and Agribusiness, South AfricaThis study examines commercial farmers' perceptions of and management responses to the HIV epidemic, among a sample in KwaZulu-Natal Province in South Africa. The analysis is based on responses to a postal survey of commercial farmers belonging to KwaZulu-Natal Agricultural... -
Addressing the HIV/AIDS—food insecurity syndemic in sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: DavidA Himmelgreen --- Department of Anthropology, United States Nancy Romero-Daza --- Department of Anthropology, United States David Turkon --- Department of Anthropology, United States Sharon Watson --- Department of Anthropology, United States Ipolto Okello-Uma --- Department of Animal Science, Lesotho Daniel Sellen --- Departments of Anthropology and Public Health Sciences, CanadaRecently a few vocal health experts have suggested that some of the billions of dollars currently used to prevent and treat HIV and AIDS be reallocated to address more basic problems such as malnutrition, tuberculosis, malaria, and enteric and diarrheal... -
Human impact on lake ecosystems: the case of Lake Naivasha, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GeorgeE Otiang'a-Owiti Ignatius Abiya OsweLake Naivasha is a wetland of national and international importance. However, it is under constant anthropogenic pressures, which include the quest for socioeconomic development within the lake ecosystem itself as well as other activities within the catchment. The lake is... -
Mangrove litter production and organic carbon pools in the Mngazana Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Anusha Rajkaran JanineB AdamsWood harvesting is reducing the density of adult mangrove trees in the Mngazana Estuary. This is expected to decrease the amount of litter produced as well as the availability of organic carbon to the estuary and the nearshore environment. Pools... -
Heavy metal pollution levels in water and oysters, Saccostrea cucullata, from Mzinga Creek and Ras Dege mangrove ecosystems, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Augustina Mtanga JohnF MachiwaHeavy metal (cadmium, chromium, copper, mercury, lead and zinc) concentrations in mangrove forests were investigated in water, suspended particulate matter (SPM) and oyster samples from the Mzinga Creek and Ras Dege mangrove stands, Tanzania, using Inductively Coupled Plasma–Atomic Emission Spectroscopy... -
Effect of salinity on growth of juvenile silver kob, Argyrosomus inodorus (Teleostei: Sciaenidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HL Ferreira NG Vine CL Griffiths H KaiserAs part of the evaluation of new aquaculture species, the effect of environmental factors on growth, food conversion ratio and survival should be tested. In this study silver kob, Argyrosomus inodorus, were reared for 98 days at three salinities, of... -
Bioaccumulation of platinum group metals in dolphins, Stenella sp., caught off Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DK EssumangPlatinum group metals (PGMs) concentrations were measured in the tissues= of dolphins (Stenella sp.) caught along the Ghanaian coastline. Tissues from specimens caught by fishermen from Dixcove, western Ghana, were analysed in 2006 for palladium (Pd), platinum (Pt) and rhodium... -
The role of ornamental goldfish Carassius auratus in transfer of some viruses and ectoparasites to cultured fish in Egypt: comparative ultra-pathological studies
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MA Mahmoud --- Department of Pathology, Faculty of Veterinary Medicine, Egypt SM Aly --- , Egypt AS Diab --- , Egypt G. John --- Department of Biotechnology, IndiaGoldfish, common carp and Nile tilapia were sampled between September 2002 and May 2003 to investigate lesions induced by viral diseases and ectoparasites. Goldfish exhibited neoplasms, Dermocystidium sp., Ichthyophthirius multifiliis (Ich), Trichodina reticulata, Lernaea cyprinacea and systemic infections. Neoplastic and... -
Application of a direct toxicity assessment approach to assess the hazard of potential pesticide exposure at selected sites on the Crocodile and Magalies rivers, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Ansara-Ross --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa PJ van den Brink --- Department of Aquatic Ecology and Water Quality Management, The Netherlands MJ Ross --- Centre for Aquatic Research, Department of Zoology, South AfricaThe potentially hazardous effects of agricultural pesticide usage in the Crocodile (west) Marico catchment were evaluated using the Danio rerio and Daphnia pulex lethality, Selenastrum capricornutum growth inhibition and the Ames mutagenicity plate incorporation assays. Hazard assessment categories are proposed... -
Temperature preference of juvenile dusky kob Argyrosomus japonicus (Pisces: Sciaenidae)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Bernatzeder PJ BritzThe final temperature preference of cultured juvenile dusky kob is determined to provide an indicator of their optimum temperature for growth. Trials were conducted over a five-day period in horizontal temperature gradients ranging from 21°C to 27°C. Control trials were... -
Estuarine habitat use by juvenile dusky kob Argyrosomus japonicus (Sciaenidae), with implications for management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PD Cowley SE Kerwath A-R Childs EB Thorstad F Økland TF NæsjeThe spatial and temporal area-use patterns of estuarine-dependent juvenile dusky kob Argyrosomus japonicus in the Great Fish Estuary, South Africa, were examined using acoustic telemetry. In all, 29 individuals (307–400 mm total length) were surgically equipped with individually coded transmitters... -
Reproductive system and the spermatophoric reaction of the mesopelagic squid Octopoteuthis sicula (Rüppell 1844) (Cephalopoda: Octopoteuthidae) from southern African waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HJT Hoving MR Lipiński JJ VidelerReproductive features of the poorly known oceanic squid Octopoteuthis sicula are described and quantified to gain insight into the reproductive biology of the species. The data are based on 39 complete and partial specimens from southern African waters, collected between... -
Comparative embryogenesis of Australian and South African viviparous clinid fishes (Blennioidei, Teleostei)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Fishelson --- Department of Zoology, George S Wise Faculty of Life Sciences, Israel O Gon --- , South AfricaThe study follows the embryogenesis of 16 species of viviparous clinid fishes (Clinidae, Teleostei), from the Cape south coast of South Africa and from Australia, with comparative remarks on the development of juveniles in oviparous species. The sperm intromitted into... -
Determining grazing capacity in Namibia with the aid of remote sensing
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Espach --- Ministry of Agriculture, LG Lubbe --- Ministry of Agriculture, N Ganzin --- Ifremer, FranceThe Namibian rangelands consist of a mixture of herbaceous and woody components. The main source of income is from farming systems with grass production the predominant source of forage. For rangeland managers to utilise this source sustainably, the accurate determination... -
Influence of molasses additive and moisture level at ensiling on fermentative characteristics of Panicum maximum
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: WA van Niekerk A Hassen FM BechazSilages made from directly cut or wilted Panicum maximum treated with or without molasses, were evaluated to determine fermentative characteristics. The grass was harvested at the boot stage of growth and the material of each treatment was ensiled in separate... -
Qualitative evaluation of four subtropical grasses as standing hay: diet selection, rumen fermentation and partial digestibility by sheep
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: WA van Niekerk --- Department of Animal and Wildlife Sciences, South Africa Abubeker Hassen --- Department of Animal and Wildlife Sciences, South AfricaThe nutritive value of four subtropical grasses (Panicum maximum, Anthephora pubescens, Digitaria eriantha and Chloris gayana) standing hay were compared in terms of qualitative intake and partial digestibility by sheep. The species differed significantly in terms of diet quality selected... -
Stone-C˘ech Compactifications of Ditopological Texture Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Aysşegül Altay Uğur Murat DikerA texturing on a set S is a point separating, complete, completely distributive lattice S of subsets of S with respect to inclusion which contains S, Ø and for which arbitrary meet coincides with intersection and finite joins coincide with... -
The influence of tree improvement and cultural practices on the productivity of Eucalyptus plantations in temperate South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: GR Boreham RN PallettThe South African forestry industry is dependent on a resource of fast-growing, low-cost wood to remain globally competitive. Land availability and the legislative requirements for afforestation in South Africa are limiting factors for future growth and therefore increasing the productivity... -
Productivity gains by fertilisation in Eucalyptus urophylla clonal plantations across gradients in site and stand conditions
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: JM de Aguiar Ferreira --- , Brazil JL Stape --- Department of Forestry and Environmental Resources, USANutrition management in Eucalyptus plantations is fundamental for sustaining high production. Fertilisation is routinely used to improve tree nutrition, providing profitable returns on large investments. Growth responses to fertilisation differ dramatically among sites, however, so efficient investment decisions in fertilisation... -
Responses of the Serengeti avifauna to long-term change in the environment
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anthony RE Sinclair --- Beaty Biodiversity Research Centre, Canada Ally Nkwabi --- Serengeti Biodiversity Program, Tanzania Simon AR Mduma --- Beaty Biodiversity Research Centre, Canada Flora Magige --- Department of Zoology and Wildlife Conservation, TanzaniaIn this paper we examine how climate change interacts with other disturbances to alter the functioning of a tropical ecosystem, the Serengeti in Tanzania. Tropical Africa has increasing temperatures and changes in rainfall. Long-term data have shown how the avifauna... -
Mineralisation of organic fertilisers used by urban farmers in Harare and their effects on maize (Zea mays L.) biomass production and uptake of nutrients and heavy metals
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Armwell Shumba --- Department of Soil Science and Agricultural Engineering, Zimbabwe Ronald Marumbi --- Department of Soil Science and Agricultural Engineering, Zimbabwe Blessing Nyamasoka --- Department of Soil Science and Agricultural Engineering, Zimbabwe Phillip Nyamugafata --- Department of Soil Science and Agricultural Engineering, Zimbabwe Justice Nyamangara --- Matopos Research Station, Zimbabwe Simon Madyiwa --- Department of Soil Science and Agricultural Engineering, ZimbabweNutrient release patterns and heavy metal contamination risks associated with animal manure and organic municipal wastes used as basal fertilisers are largely unknown in Zimbabwe. Carbon, nitrogen and phosphorus mineralisation patterns were determined in a 56-day incubation experiment of domestic... -
Radiation induced changes in the airway—anaesthetic implications
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Mallika Balakrishnan --- Regional Cancer Centre, India Renju Kuriakose --- Regional Cancer Centre, India Rachel Cherian Koshy --- Regional Cancer Centre,Radiation induces a variety of changes in the airway that can potentially lead to difficult intubation. Osteoradionecrosis (ORN) of the mandible, a severe consequence of radiotherapy for head and neck malignancies can cause a reduction of the ‘mandibular space’ and... -
LMA CTrach™—Results of our first experience with the fiberoptic intubating laryngeal mask airway in 80 patients
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: P Hilbert --- Department of Anesthesiology, Intensive Care and Emergency Medicine, Germany M Birkmeier --- Department of Anesthesiology, Intensive Care and Emergency Medicine, Germany R Stuttmann --- Department of Anesthesiology, Intensive Care and Emergency Medicine, GermanyWe report on our initial clinical experience with the new LMA CTrach™. The intention was to evaluate its suitability in the routine anaesthetic working environment. Method: After inducing general anesthesia and muscle relaxation, the CTrach™ was used in elective patients,... -
Are lipophilic beta-blockers preferable for peri-operative cardioprotection?:
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: BM Biccard --- Nuffield Department of Anaesthetics, United Kingdom JW Sear --- Nuffield Department of Anaesthetics, United Kingdom P Foëx --- Nuffield Department of Anaesthetics, United KingdomAtenolol has been proposed as a peri-operative cardioprotective agent in patients with coronary disease. However, recent reports have cast doubt over the cardioprotective efficacy of atenolol in patients with hypertension and coronary artery disease. There is therefore doubt whether atenolol... -
Cardiac arrest after submucosal infiltration with lignocaine 2%—epinephrine in nasal surgery: A case report
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: SC Pawar --- Department of Anaesthesiology, India SS Patil --- Department of Anaesthesiology, India SR Jagtap --- Department of Anaesthesiology, India S Deolokar --- Department of General Surgery, IndiaA case of a 26-year-old ASA I physical status male undergoing septoplasty had an abrupt pulseless ventricular tachycardia following submucosal infiltration of lignocaine 2% with epinephrine 1: 200,000 combination. Ventricular tachycardia associated with unconsciousness and absent peripheral pulse was transient... -
Potentially fatal tricuspid valve aspergilloma detected after laparoscopic abdominal surgery
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: MK Singla --- Department of Cardiac Anaesthesia, A Shrivastava --- Department of Cardiac Anaesthesia, KC Mukherjee --- Department of Cardiac Surgery, K Sodhi --- Department of Critical Care,Fungal endocarditis accounts for 1.3–6% of all cases of infective endocarditis. The most common causative organism is Candida, followed by Aspergillus and other mould fungi. Aspergillus endocarditis is usually associated with high morbidity and mortality. Establishing a definitive and timely... -
Difficult airways: a reliable “Plan B”
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: DG Bishop --- Pietermaritzburg Metropolitan Department of Anaesthesia, Critical Care and Pain Management, Z Farina --- Pietermaritzburg Metropolitan Department of Anaesthesia, Critical Care and Pain Management, RD Wise --- Pietermaritzburg Metropolitan Department of Anaesthesia, Critical Care and Pain Management,Percutaneous transtracheal jet ventilation (PTJV) is an accepted method of rescue ventilation following unsuccessful attempts to secure the airway through conventional methods. Pre-emptive use of PTJV in the difficult airway has also been described as using either a specifically designed... -
The old wave
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: R Dickerson --- Department of Emergency Medicine, -
Anaesthesia for transvenous transcatheter tricuspid valve-in-valve implantation
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: LJ Du Preez --- Department of Anaesthesiology and Critical Care, P Le Roux --- Department of Anaesthesiology and Critical Care, AR Coetzee --- Department of Anaesthesiology and Critical Care,The authors report and discuss the anaesthetic management of a transvenous transcatheter tricuspid valve replacement. The conduct of anaesthesia, the challenges encountered and the specific risks associated with the procedure will be discussed. Percutaneous tricuspid valve replacement may be safely... -
Case study: Anaesthetic management of an achondroplastic dwarf undergoing radical nephrectomy
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Jain --- Department of Anaesthesia and Intensive Care, India K Jain --- Department of Anaesthesia and Intensive Care, India JK Makkar --- Department of Anaesthesia and Intensive Care, India K Mangal --- Department of Anaesthesia and Intensive Care, IndiaA three feet two inch (96 cm) tall achondroplastic patient with urothelial cell carcinoma involving renal pelvis was scheduled for a radical nephrectomy. Radial artery cannulation and central venous access were secured in the pre-induction period. After induction, the airway... -
The difficult paediatric airway
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: CJ Coté --- Harvard Medical School, USA -
Anaesthetic management of a patient with Crouzon syndrome
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: SJ Bajwa --- Department of Anaesthesiology and Intensive Care, India SK Gupta --- Department of Anaesthesiology and Intensive Care, India J Kaur --- Department of Anaesthesiology and Intensive Care, India A Singh --- Department of Anaesthesiology and Intensive Care, India SS Parmar --- Department of Anaesthesiology and Intensive Care, IndiaCrouzon syndrome is a rare hereditary disorder, characterised by marked craniofacial dysostosis from birth or early childhood. Typically, patients present in early childhood for craniofacial reconstruction surgery. Presentation in early adulthood is unusual. The most challenging aspect, for an attending... -
Informed consent for anaesthesiological and intensive care unit research: a South African perspective
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: JAM De Roubaix --- Centre for Applied Ethics, Department of Philosophy,Health research is highly regulated and controlled. The South African legal framework consists of the Bill of Rights, the National Health Act, and two sets of Department of Health guidelines, Medical Research Council Ethical Guidelines Book 1, and South African... -
Regional infraclavicular blocks via the coracoid approach for below-elbow surgery: a comparison between ultrasound guidance with, or without, nerve stimulation
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: FMT Azmin --- Department of Anaesthesiology and Intensive Care, Malaysia YC Choy --- Department of Anaesthesiology and Intensive Care, MalaysiaThis randomised, observer-blinded study compared brachial plexus infraclavicular block under ultrasound guidance with, or without, nerve stimulation, for patients undergoing below-elbow surgery. -
Carcinoid heart disease secondary to ovarian tumour: a logical sequence of management?
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: R Sahajanandan --- Heart and Lung Centre, S Lakshmanan --- Heart and Lung Centre, S Hester --- Heart and Lung Centre, M Norell --- Heart and Lung Centre, P Strouhal --- Heart and Lung Centre, D Murphy --- Heart and Lung Centre, H Buch --- Heart and Lung Centre, JS Billing --- Heart and Lung Centre,There are only few reported cases of carcinoid heart disease caused by ovarian tumours. The main cause of morbidity and mortality in these patients is right heart failure. Most cases of carcinoid heart disease have liver metastases and undergo cardiac... -
The LMA Classic™ as a conduit for tracheal intubation in adult patients: a review and practical guide
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: ANJ Alberts --- Clinical Unit, Department of Anaesthesiology and Critical Care Kalafong Hospital; Faculty of Health Sciences,Unexpected difficulty in maintaining an open airway following induction of anaesthesia remains an ever-present hazard. Repetitive attempts at direct laryngoscopy and intubation are generally acknowledged to be inappropriate. The LMA ClassicTM is recognised as a rescue ventilation device in failed... -
A study to evaluate fibreoptic-guided intubation through the i-gel™
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Taxak --- Department of Anaesthesiology and Critical Care, India K Vashisht --- Department of Anaesthesiology and Critical Care, India KP Kaur --- Department of Anaesthesiology and Critical Care, India G Ahlawat --- Department of Anaesthesiology and Critical Care, India M Bhardwaj --- Department of Anaesthesiology and Critical Care, IndiaObjective: The i-gel™ superglottic airway (Intersurgical, Berkshire, UK) has been reported to function as an airway rescue device and as a conduit for fibre-optic intubation in predicted difficult airways. The wider and shorter stem of the i-gel™ and the absence... -
Klippel-Feil syndrome for scoliosis surgery: management of a potentially difficult paediatric airway, and report of false-negative motor-evoked potential
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: PCS Tan --- Department of Anaesthesiology and Intensive Care, Malaysia S Mohtar --- Department of Anaesthesiology and Intensive Care, Malaysia N Esa --- Department of Anaesthesiology and Intensive Care, MalaysiaA six-year-old girl with Klippel-Feil syndrome and throcacolumbar scoliosis was scheduled for growing rod insertion. Inhalational induction and tracheal intubation were carried out, with her neck in a neutral position. However, the patient woke up with paraplegia, despite normal intraoperative... -
Communication skills for medical/dental students at the University of Pretoria: Lessons learnt from a two-year study using a forum theatre method
Item type: Journal Article • Journal: South African Family Practice • Authors: C Krüger --- Department of Psychiatry, Faculty of Health Sciences, JJ Blitz-Lindeque --- Faculty of Health Sciences, GE Pickworth --- Head Education Consultant (Faculty of Health Sciences), Telematic Learning and Education Innovation, AJ Munro --- Head: Department of Drama, Faculty of Humanities, M Lotriet --- Senior Education Consultant (Faculty of Humanities), Telematic Learning and Education Innovation,Background: This study describes the lessons learnt from using a novel method for teaching communication skills to second-year medical/dental students. -
The management of acute low back pain in adults: a guide for the primary care physician
Item type: Journal Article • Journal: South African Family Practice • Authors: SW Brighton --- Department of Rheumatology,To diagnose patients with acute low back pain (LBP), a focused physical examination needs to be conducted and a detailed history obtained. The patient should then be placed into one of three broad categories, namely nonspecific LBP, pain associated with... -
The writing is on the wall: medical students express their views and anguish
Item type: Journal Article • Journal: South African Family Practice • Authors: LJ Mathibe --- Department of Therapeutics and Medicines Management,Students often write messages on toilet walls. Some of these messages are derogatory, but some express their anguish, and reflect the challenges that they face while training. In this brief report, three messages, chosen from many which were written on... -
The detection of left ventricular hypertrophy and diastolic dysfunction
Item type: Journal Article • Journal: South African Family Practice • Authors: GR Norton --- Faculty of Health Sciences, -
The management of acute low back pain in adults: a guide for the primary care physician, Part II
Item type: Journal Article • Journal: South African Family Practice • Authors: SW Brighton --- Department of Rheumatology,When a patient presents with acute low back pain (LBP), any red flag warnings of serious disease should first be excluded. Yellow and blue flag warnings of psychological factors should be noted. A psychological opinion of patients with substantial psychological... -
The eye in systemic disease
Item type: Journal Article • Journal: South African Family Practice • Authors: M Lenake --- University of Cape Town; Groote Schuur Hospital, N Du Toit --- University of Cape Town; Groote Schuur Hospital,The eye is a unique organ which is often involved in systemic disease. Patients with systemic disease may first present with eye pathology, and patients with known systemic illnesses may need to have their eyes specifically checked for ocular complications... -
Examining significant predictors of students’ intention to drop out
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kelly Cortes --- North-West University, Karina Mostert --- North-West University, Crizelle Els --- North-West University,The objective of this study was to determine if core self-evaluation traits, burnout, disengagement, social support and career decision making difficulties are significant predictors of university students’ intention to drop out. A cross-sectional design and non-probability sample (N=782) was used... -
Repositioning agricultural development in Africa through appropriate technology transfer
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Okey F Obi --- Agricultural and Bioresources Engineering Department, Faculty of Engineering, Nigeria Joel N Nwakaire --- Agricultural and Bioresources Engineering Department, Faculty of Engineering, NigeriaThe advancement in agricultural technology frontiers over time has resulted in continuous upward shifts in the production, distribution and consumption of agricultural produce worldwide. Such dramatic shifts in the technology frontier have increased the technology gap between countries and regions... -
Green economy and innovation: compressive strength potential of blended cement cassava peels ash and laterised concrete
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: EE Agbenyeku --- Department of Civil Engineering Science, Faculty of Engineering and the Built Environment, South Africa FN Okonta --- Department of Civil Engineering Science, Faculty of Engineering and the Built Environment, South AfricaThis work highlights the incorporation of two locally available materials, cassava peels ash (CPA) and laterite, in concrete production for construction purposes. The abundance of these materials in West Africa paved the way for this study. The effect of partial... -
Larval development reflects biogeography in two formerly synonymised southern African coastal crabs
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Papadopoulos --- Molecular Zoology Laboratory (Aquatic Division), Department of Zoology, South Africa PR Teske --- Molecular Zoology Laboratory (Aquatic Division), Department of Zoology, South AfricaThe southern African crab Hymenosoma orbiculare was recently split into five distinct species, of which three are estuarine/coastal and have peripatric distributions that are linked to temperature-defined marine bioregions. This suggests that the species’ ranges may be limited by physiological... -
The dynamics of local innovations among formal and informal enterprises: Stories from rural South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alexandra Luis Mhula Links --- Human Sciences Research Council (HSRC), South Africa Tim Hart --- Human Sciences Research Council (HSRC), Pretoria, South Africa; Department of Sociology and Social Anthropology, Stellenbosch University, South Africa Peter Jacobs --- Human Sciences Research Council (HSRC), South AfricaExploiting the developmental potential of innovation for marginalised communities requires a context-specific understanding of the features and mechanics of innovation. In this article we explore the nature of innovation with the aid of evidence collected from formal and informal enterprises... -
Predictors of student burnout and engagement among university students
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Danél Olwage --- WorkWell Research Unit for Economic and Management Sciences, South Africa Karina Mostert --- WorkWell Research Unit for Economic and Management Sciences, South AfricaThis study investigated influences of core self-evaluation traits, career decision-making difficulties and social support on student burnout and engagement. A cross-sectional design was used with a non-probability quota sample. In the multiple regression analyses, self-efficacy, inconsistent information due to internal... -
Socially relevant computing curriculum innovation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: John Trimble --- Systems and Computer Science Department, USA Harry Keeling --- Systems and Computer Science Department, USAThis paper is based on curriculum development over the past ten years that includes work at Howard University as well as universities in Zimbabwe, South Africa and Rwanda. The focus is the development of the computing discipline in a people-centered... -
An audit of the perioperative anaesthetic management of ventriculoperitoneal shunt insertion in the paediatric population at Inkosi Albert Luthuli Central Hospital
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: K Allopi --- Department of Anaesthetics, South Africa L Padayachee --- Department of Anaesthetics, South AfricaObjective: Our study included an assessment of current anaesthetic practice in paediatric ventriculoperitoneal shunt insertion (VPSI), a review of shunt revision and complication rates, an evaluation of the incidence of congenital syndromes, retroviral disease and tuberculosis meningitis, and differentiation with... -
Integral approach to South African psychology with special reference to indigenous knowledge
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D Edwards --- Psychology Department, South AfricaIn order to redress imbalances in South African psychological service provision, honor indigenous, transpersonal, community based perspectives, and introduce fresh insights and direction, this article presents an integral approach to psychology in South Africa. Areas highlighted for future research and... -
Microcystin-LR equivalent concentrations in fish tissue during a postbloom Microcystis exposure in Loskop Dam, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Nchabeleng --- Department of Biodiversity, South Africa P Cheng --- CSIR Natural Resources and the Environment, South Africa PJ Oberholster --- CSIR Natural Resources and the Environment, South Africa A-M Botha --- Department of Genetics, South Africa WJ Smit --- Department of Biodiversity, South Africa WJ Luus-Powell --- Department of Biodiversity, South AfricaThe effects of a decomposing cyanobacteria bloom on water quality and the accumulation of microcystin-LR equivalent toxin in fish at Loskop Dam were studied in May 2012. Enzyme-linked immunosorbent assay [ELISA] was used to confirm the presence of microcystin-LR equivalent... -
Innovation and agricultural exports: the case of sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Monika Korzun --- School of Environmental Design and Rural Development (SEDRD), Canada Bamidele Adekunle --- School of Environmental Design and Rural Development (SEDRD), Canada Glen C. Filson --- School of Environmental Design and Rural Development (SEDRD), CanadaThe multifaceted nature of agricultural innovation makes it evident that technological, industrial, human and economic factors define and redefine agricultural innovation within new cultural and technological contexts. Juxtaposing the African condition to the earlier understanding of the cross-cultural dimensions of... -
Effects of climate change on a peri-urban farming community in Lagos, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Taibat Lawanson --- Department of Urban and Regional Planning, Nigeria Olabode Orelaja --- Department of Urban and Regional Planning, Nigeria Michael Simire --- Department of Urban and Regional Planning, NigeriaThis paper investigates the effects of climate change on agricultural activities in Igbe Farming Community, Lagos, Nigeria. The paper adopts a case study methodology in which structured questionnaires were administered on 161 farmers in the community. Information on the socio-economic... -
Young adult learners with dyslexia: their socio-emotional support needs during adolescence
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Talita Claassens --- Department Psychology of Education, Ansie C. Lessing --- Department Psychology of Education,This study retrospectively explored social-emotional support needs that young adult learners with dyslexia perceived to have experienced as adolescents attending an inclusion school setting. Six young adults with dyslexia were participants (females = 3; age range 18–21 years). They responded... -
Effect of rotenone on gill-respiring and plastron-respiring insects
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AJ Booth --- Department of Ichthyology and Fisheries Science, South Africa S Moss --- Department of Ichthyology and Fisheries Science, South Africa OLF Weyl --- Department of Ichthyology and Fisheries Science, South AfricaRotenone, a commonly-used piscicide, interferes with the cellular respiration of aquatic vertebrates and invertebrates by preventing the uptake of oxygen. While dose-response relationships have been developed for fish, there are limited comparative data available on aquatic insects that respire either... -
Spring body condition, moult status, diet and behaviour of white-faced whistling ducks (Dendrocygna viduata) in northern South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Scott A. Petrie --- Centre for Water in the Environment, University of the Witwatersrand, South AfricaMany white-faced whistling ducks (Dendrocygna viduata) have responded to European colonization by overwintering on irrigation and stock-watering ponds in the semi-arid interior of South Africa. I studied the body condition, diet, behaviour and moult intensity of whitefaced whistling ducks prior... -
Are wild African lungfish obligate air breathers? Some evidence from radio telemetry
Item type: Journal Article • Journal: African Zoology • Authors: C. M. Mlewa --- Department of Fisheries, Kenya J. M. Green --- Department of Biology, Canada A1B 3X9 R. Dunbrack --- Department of Biology, Canada A1B 3X9Laboratory studies have resulted in classification of the marbled African lungfish, Protopterus aethiopicus, as an obligate air-breather. However, there have been no investigations of the extent of dependence on aerial respiration by this species in the wild. We used radio... -
The Congo clawless otter (Aonyx congicus) Mustelidae: Lutrinae): a review of its systematics, distribution and conservation status
Item type: Journal Article • Journal: African Zoology • Authors: Hélène Jacques --- IUCN Otter Specialist Group, France Géraldine Veron --- Muséum National d’Histoire Naturelle, France Franck Alary --- Direction Recherche Innovation et Enseignement Supérieur, France Stéphane Aulagnier --- Institut National de la Recherche Agronomique, FranceAmong the four African otter species, the Congo clawless otter (Aonyx congicus) is the least known due to the remoteness of its Central African equatorial rainforest range. The taxonomic status and the criteria to differentiate A. congicus from the quite... -
Origin and putative colonization routes for invasive rodent taxa in the Democratic Republic of Congo
Item type: Journal Article • Journal: African Zoology • Authors: P. K. Kaleme --- Department of Botany and Zoology, South Africa J. M. Bates --- Department of Zoology, U.S.A. H. K. Belesi --- Department of Environment, Democratic Republic of Congo R. C. K. Bowie --- Museum of Vertebrate Zoology and Department of Integrative Biology, U.S.A. M. Gambalemoke --- Faculté des Sciences, Université de Kisangani, Democratic Republic of Congo J. Kerbis-Peterhans --- Department of Zoology, U.S.A. J. Michaux --- University of Liège, Belgium J. M. Mwanga --- Centre de Recherche en Sciences Naturelles, Democratic Republic of Congo B. R. Ndara --- Centre de Recherche en Sciences Naturelles, Democratic Republic of Congo P. J. Taylor --- Department of Ecology and Resource Management, South Africa B. Jansen van Vuuren --- Department of Botany and Zoology, South AfricaThe threat posed by biological invasions is well established. An important consideration in preventing the spread of invasives and also subsequent introductions lies in understanding introduction pathways. The Democratic Republic of the Congo (DRC) houses a large percentage of the... -
Endoparasites (helminths and coccidians) in the hedgehogs Atelerix algirus and Paraechinus aethiopicus from Algeria
Item type: Journal Article • Journal: African Zoology • Authors: Mourad Khaldi --- Laboratory of Ecology, Department of Biology, Algeria Jordi Torres --- Laboratory of Parasitology, Faculty of Biology, University of Barcelona, Span Berta Samsó --- Laboratory of Parasitology, Faculty of Biology, University of Barcelona, Span Jordi Miquel --- Laboratory of Parasitology, Faculty of Biology, University of Barcelona, Span Mohamed Biche --- Department of Agricultural and Forest Zoology, Algeria Meryam Benyettou --- Laboratory of Ecology, Department of Biology, Algeria Ghania Barech --- Laboratory of Ecology, Department of Biology, Algeria Hadj Aissa Benelkadi --- Department of Agricultural and Forest Zoology, Algeria Alexis Ribas --- Laboratory of Parasitology, Faculty of Biology, University of Barcelona, SpanThe study of endoparasites (helminths and coccidians) in the Algerian (Atelerix algirus) and desert (Paraechinus aethiopicus) hedgehogs was performed between July 2008 and October 2009. The helminth species found included two cestodes, Mathevotaenia erinacei (Anoplocephalidae) and an unidentified cestode larva... -
Gastrointestinal protozoa and digestive tract parameters of wild South African warthogs (Phacochoerus aethiopicus)
Item type: Journal Article • Journal: African Zoology • Authors: D.G. Booyse --- Department of Anatomy and Physiology, B.A. Dehority --- Department of Animal Sciences,The warthog (Phacochoerus aethiopicus) is a grazer and hindgut fermenter with an apparent unique population of protozoa; however, only a limited number of specimens have been studied to date. In addition to having a very low number of protozoal species,... -
First record of freshwater fish on the Cape Verdean archipelago
Item type: Journal Article • Journal: African Zoology • Authors: Kay Lucek --- Institute for Ecology & Evolution, Division of Aquatic Ecology & Macroevolution, University of Bern, Switzerland Mélissa Lemoine --- Institute for Ecology & Evolution, Division of Evolutionary Ecology, University of Bern, SwitzerlandThe Cape Verdean islands form a distinct aquatic freshwater ecoregion characterized mainly by temporal water bodies with an adapted invertebrate community. Freshwater fish were not previously recorded from the archipelago. During a non-exhaustive survey of freshwater bodies on five islands... -
Adaptations to life on arid islands of South Africa: renal performance and phenotypic plasticity in the European rabbit Oryctolagus cuniculus
Item type: Journal Article • Journal: African Zoology • Authors: Gareth J. Tate --- Department of Biological Sciences, South Africa Heather G. Marco --- Department of Biological Sciences, South AfricaMorphological parameters of the mammalian kidney can provide information on the extent to which an animal is able to regulate water relations within its body and cope with arid conditions. Certain groups of mammals, such as rabbits and hares, show... -
The impact of high temperatures on foraging behaviour and body condition in the Western Australian Magpie Cracticus tibicen dorsalis
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Emily K Edwards --- School of Animal Biology, Australia Nicola J Mitchell --- School of Animal Biology, Australia Amanda R Ridley --- Centre for Evolutionary Biology, School of Animal Biology, AustraliaHigh temperatures can pose significant thermoregulation challenges for endotherms, and determining how individual species respond to high temperatures will be important for predicting the impact of global warming on wild populations. Animals can adjust their behaviour or physiology to cope... -
A preliminary study of South African consumers’ knowledge of and their attitudes towards using indigenous ornamentals in horticultural applications
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lorraine Middleton --- Department of Biology, South AfricaCrucial aspects related to the knowledge levels and attitudes of South African consumers in the formal commercial sector regarding the horticultural uses of ornamental plants in general, and indigenous plants in particular, were evaluated. The findings showed that consumer behaviour... -
Contribution of innovation intermediaries in agricultural innovation: the case of agricultural R&D in Tanzania
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Athman H. Mgumia --- Tanzania Commission of Science and Technology, Directorate of Innovation, Tanzania Amon Z. Mattee --- Sokoine University of Agriculture, TANZANIA Beatus A.T. Kundi --- Department of Mechanical and Industrial Engineering, TanzaniaWith the current global economic reforms and advances in science, the move has been towards privatisation of the agricultural knowledge infrastructure. However, inadequate capacity of agricultural entrepreneurs and the diversity in the characteristics of the agricultural technologies have created market... -
Students’ perceptions of the usefulness of an accounting project in acquiring accounting knowledge and professional skills
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: L J Stainbank --- University of KwaZulu-Natal,This paper focuses on the usefulness of an accounting project that was implemented in order to encourage students to integrate their knowledge of different modules at a third year level, to enable them to acquire accounting knowledge and professional skills,... -
Successful difficult airway intubation using the Miller laryngoscope blade and paraglossal technique
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: P Anderson --- Department of Anaesthesia, South Africa J Espinaco Valdés --- Department of Anaesthesia, South Africa JG Vorster --- Department of Anaesthesia, South AfricaIn anaesthetic practice clinicians are often faced with difficult airway situations. The conventional approach to intubation is the midline technique using a curved Macintosh blade for direct laryngoscopy. However, we have been successful in such a case using old technology... -
Surviving change by changing violently: ukuthwala in South Africa's Eastern Cape province
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: W.J. (Jaco) Smit --- Department of Cultural Anthropology and Development Sociology, The Netherlands Catrien Notermans --- Department of Cultural Anthropology and Development Sociology, The NetherlandsDuring the last decade a comeback of the apparently extinct marriage practice called ukuthwala has been noted and has found much attention in the South African media. It has been raised as a particular concern that, apparently, ukuthwala increasingly entails... -
Ultrasound-guided supraclavicular brachial plexus anaesthesia improves arteriovenous fistula flow characteristics in end-stage renal disease patients
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Shyam Meena --- Department of Anaesthesia, India Virendra Arya --- Department of Anaesthesia, India Indu Sen --- Department of Anaesthesia, India Mukut Minz --- Department of Anaesthesia, India Mahesh Prakash --- Department of Anaesthesia, IndiaBackground: Surgical construction of an arteriovenous fistula is preferred for end-stage renal failure patients requiring long-term haemodialysis. -
Homecoming of Brachiaria: Improved Hybrids Prove Useful for African Animal Agriculture
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: B. L. Maass --- International Center for Tropical Agriculture (CIAT), Kenya C. A. O. Midega --- African Insect Science for Food and Health, (ICIPE), Kenya M. Mutimura --- Rwanda Agriculture Board (RAB), Rwanda V. B. Rahetlah --- Centre de Développement Rural et de Recherche Appliquée, Madagascar P. Salgado --- Mediterranean and Tropical Livestock Systems, CIRAD, UMR SELMET, Madagascar J. M. Kabirizi --- National Livestock Resources Research Institute (NaLIRRI), Uganda Z. R. Khan --- African Insect Science for Food and Health, (ICIPE), Kenya S. R. Ghimire --- Biosciences Eastern and Central Africa (BecA)-ILRI Hub, Kenya I. M. Rao --- International Center for Tropical Agriculture (CIAT), ColombiaSpecies of the genus Brachiaria originate primarily from Africa, where they are constituents of natural grasslands. Due to their adaptation to acidic, low-fertility soils, millions of hectares of Brachiaria species have been sown as improved pastures in South and Central... -
Geographical distribution and habitats of the freshwater snail Bulinus reticulatus and its susceptibility to Schistosoma haematobium miracidia under experimental conditions
Item type: Journal Article • Journal: African Zoology • Authors: Kenné N. de Kock [AN0001] Corrie T. Wolmarans --- School of Environmental Sciences and Development, Zoology, South Africa Hylton D. Strauss --- School of Environmental Sciences and Development, Zoology, South Africa Madeleine Killian --- School of Environmental Sciences and Development, Zoology, South Africa Desireé C. Maree --- School of Environmental Sciences and Development, Zoology, South AfricaA brief account is given of the geographical distribution and habitats of Bulinus reticulatus as reflected by the 278 samples currently on record in the database of the National Freshwater Snail Collection, Potchefstroom University. The susceptibility of field specimens and... -
Structure and cytology of the testes of Labeo victorianus (Pisces: Cyprinidae)
Item type: Journal Article • Journal: African Zoology • Authors: Justus Rutaisire --- Department of Wildlife and Animal Resources Management, Uganda Ruth T. Muwazi --- Department of Wildlife and Animal Resources Management, Uganda Anthony J. Booth --- Department of Ichthyology and Fisheries Science, South AfricaTestes macromorphology and histomorphology together with sperm cytology are described for a potamodrometic cyprinid fish, Labeo victorianus, from Lake Victoria. Testes were found to be paired and elongate, suspended by a mesorchium on either side of the swim bladder. A... -
Leaf biomechanics as a potential tool to predict feeding preferences of the geometric tortoise Psammobates geometricus
Item type: Journal Article • Journal: African Zoology • Authors: Ronald A. Balsamo --- Department of Biology, U.S.A Margaretha D. Hofmeyr --- Chelonian Biodiversity and Conservation, Department of Biodiversity and Conservation Biology, South Africa Brian T. Henen --- Chelonian Biodiversity and Conservation, Department of Biodiversity and Conservation Biology, South Africa Aaron M. Bauer --- Department of Biology, U.S.AFood and non food plant characteristics were studied for the geometric tortoise, Psammobates geometricus, to test the hypothesis that feeding preferences in tortoises may be influenced by the mechanical properties of plant leaves. Twelve focal feeding observations made between 8... -
Development and evaluation of an integrated electronic data management system in a South African metropolitan critical care service
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: NL Allorto --- Pietermaritzburg Metropolitan Department of Surgery, South Africa RD Wise --- Pietermaritzburg Department of Anaesthesia, South AfricaIntroduction: The importance of accurate healthcare data is vital when approaching current healthcare challenges, but is difficult to collect in busy, under-resourced environments. It was aimed to develop and implement an information system that is cost-effective, easy and practical for... -
Digestive parameters and energy assimilation of Cape porcupine on economically important crops
Item type: Journal Article • Journal: African Zoology • Authors: Kerushka R Pillay --- School of Life Sciences, University of KwaZulu-Natal, South Africa Amy-Leigh Wilson --- School of Life Sciences, University of KwaZulu-Natal, South Africa Tharmalingam Ramesh --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaTo better understand how Cape porcupines are able to successfully occupy many agricultural lands, we studied their digestive parameters and energy assimilation when fed three economically important agricultural crops (potatoes [Solanum tuberosum], sweet potatoes [Ipomoea batatas] and butternut [Juglans cinerea])... -
Diatoms as water quality indicators in the upper reaches of the Great Fish River, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Holmes --- School of Biological Sciences, South Africa JC Taylor --- School of Biological Sciences, South AfricaThis study focused on the spring-fed upper reaches of the economically important Great Fish River with the aim of determining if diatoms could be used for biomonitoring in semi-arid conditions in southern Africa. Five sites were monitored monthly from 2010... -
Estimation of stability-related soil properties using mid-infrared spectroscopy for non-agricultural land use in Lake Victoria basin, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: B. K. Waruru --- Kenya Agricultural and Livestock Research Organization (KALRO), Kenya K. D. Shepherd --- World Agroforestry Centre (ICRAF), Kenya G. M. Ndegwa --- Jomo Kenyatta University of Agriculture and Technology (JKUAT), Kenya A. Sila --- World Agroforestry Centre (ICRAF), Kenya P. T. Kamoni --- Kenya Agricultural and Livestock Research Organization (KALRO), KenyaMethods for rapid and accurate soil tests are needed for stability-related soil properties, which are valuable for non-agricultural land use. The study tested the applicability of mid-infrared (MIR) spectroscopy for rapid estimation of selected stability-related soil properties. Two sample sets,... -
Case report: Oropharyngeal injuries with GlideScope® usage in two obese patients
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: C Curran --- Department of Anaesthesia, South AfricaThe GlideScope® is a widely used video laryngoscope that is especially beneficial in the setting of the anticipated difficult airway. However, its design introduces blind spots and necessitates the need for a curved stylet, most commonly the accompanying GlideRite® Rigid... -
Strengthening Capacity for Agribusiness Development and Management in Sub-Saharan Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Suresh Chandra Babu --- Capacity Strengthening Program, USA Rupak Manvatkar --- World Food Programme, Italy Shashidhara Kolavalli --- Ghana Strategy Support Program, GhanaIn sub-Saharan Africa, agribusiness has a major role to play in the transformation of the agricultural sector. The demand for high-value food products is increasing, creating an opportunity for the production and export of these goods. To capture the benefits... -
Habitat use and home range of black-backed jackals (Canis mesomelas) on farmlands in the Midlands of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Bruce D Humphries --- School of Life Sciences, South Africa Tharmalingam Ramesh --- School of Life Sciences, South Africa Trevor R Hill --- School of Agriculture, Earth and Environmental Science, South Africa Colleen T Downs --- School of Life Sciences, South AfricaBlack-backed jackals (Canis mesomelas) are an abundant mesopredator on farmlands (croplands and rangelands) across South Africa. Given their adaptability in a changing anthropogenic landscape, knowledge of spatial movements can provide important ecological information on the species. We captured, collared and... -
The value of six key soil variables for incorporation into a South African forest site classification system
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Josua H Louw --- School of Natural Resource Management, South AfricaThe intensive nature of management practices in the exotic monoculture plantations of South Africa requires reliable decision support systems. Recent socio-economic developments, the need for optimal forest productivity, as well as increasing awareness of broader ecosystem values and environmental risks,... -
Community-based agricultural interventions in the context of food and nutrition security in South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: M. Faber --- Nutritional Intervention Research Unit, C. Witten --- Nutritional Intervention Research Unit, S. Drimie --- Regional Coordinator, RENEWAL,Despite South Africa being a food-secure country in terms of aggregate food availability, it is listed by the World Health Organization as one of 36 high-burden countries, home to large numbers of stunted children. Recent findings, in the context of... -
Household market participation and stunting in preschool children in Lilongwe, Malawi
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Al Howard --- Department of Global and Community Health, Mk Komwa --- Department of Environmental Science and Policy, R. Yohane --- Kanengo AIDS Support Organization, Kh Jacobsen --- Department of Global and Community Health,Background: Stunting among Malawian preschool children continues to be a concern. -
Sublittoral seaweed communities on natural and artificial substrata in a high-latitude coral community in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Gersun --- Department of Biological Sciences and Marine Research Institute, South Africa RJ Anderson --- Department of Biological Sciences and Marine Research Institute, South Africa JR Hart --- Oceanographic Research Institute, South Africa GW Maneveldt --- Department of Biodiversity and Conservation Biology, South Africa JJ Bolton --- Department of Biological Sciences and Marine Research Institute, South AfricaCoral mortality may result in macroalgal proliferation or a phase shift into an alga-dominated state. Subtidal, high-latitude western Indian Ocean coral communities at Sodwana Bay on the KwaZulu-Natal coast, South Africa, have experienced some mortality because of warm-water anomalies, storms... -
Outcome of traumatic brain injury in the intensive care unit: a five-year review
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: KU Tobi --- Department of Anaesthesiology, Nigeria AL Azeez --- Department of Surgery, Nigeria SO Agbedia --- Department of Anaesthesiology, NigeriaIntroduction: Traumatic brain injury (TBI) is a major challenge in the intensive care unit (ICU) with a high mortality. In a recent study, severe TBI accounted for 14.3% of all ICU admissions with a mortality of 54.0%. -
“You are not always what you eat”: diet did not override intrinsic nestmate recognition cues in Argentine ants from two supercolonies in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Natasha P Mothapo --- DST-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, South Africa Theresa C Wossler --- DST-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, South AfricaNestmate recognition in ants is based on cuticular hydrocarbons (CHCs), which are heritable and may also be acquired from the environment (i.e. diet and nest environment). In Argentine ants (Linepithema humile), diet and a homogenous environment have been shown to... -
Grey Crowned Crane threat assessment around the wetlands of eastern Uganda
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: William Olupot --- Nature and Livelihoods, UgandaThe Grey Crowned Crane Balearica regulorum was uplisted to globally Endangered in 2012. There is urgent need to determine the threats they face at local levels for their conservation. I conducted formal point-count surveys around the wetlands of eastern Uganda... -
Effect of cultivar, season and locality on lipid content and fatty acid composition of cactus pear seed oil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Maryna de Wit --- Department of Microbial, Biochemical and Food Biotechnology, South Africa Arno Hugo --- Department of Microbial, Biochemical and Food Biotechnology, South Africa Nokuthula Shongwe --- Department of Microbial, Biochemical and Food Biotechnology, South Africa Rouxlene van der Merwe --- Department of Plant Sciences, South AfricaOpuntia ficus-indica (cactus pear) seeds are rich in linoleic acid and have beneficial properties for nutritional, industrial and pharmaceutical purposes. The total lipid content and fatty acid composition depends on various factors, including cultivar, degree of maturity, climate, harvesting season... -
Tillage and crop rotation effects on carbon sequestration and aggregate stability in two contrasting soils at the Zanyokwe Irrigation Scheme, Eastern Cape province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Arnold N Njaimwe --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pearson NS Mnkeni --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pardon Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa Isaiah IC Wakindiki --- Department of Agronomy, Faculty of Science and Agriculture, South AfricaIntensive tillage and monocropping have adversely affected the quality of soils in South Africa through accelerated loss of soil organic matter. Two clay loam soils, a Bonheim at Burnshill and a Shortlands at Lenye, at the Zanyokwe Irrigation Scheme in... -
Implementation of a postoperative handoff protocol
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: JJN Van Der Walt --- Department of Anaesthesia, South Africa AT Scholl --- Business Professional, USA IA Joubert --- Department of Anaesthesia and Perioperative Medicine, South Africa MA Petrovic --- Department of Anesthesiology and Critical Care Medicine, USABackground: Standardised handoff protocols have become necessary patient safety tools in the perioperative venue. In this study, the authors took a validated standardised perioperative handoff protocol and implemented it into their institution to improve the perioperative handoff communications from the... -
Methods for assessing the impact of research on innovation and development in the agriculture and food sectors
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ludovic Temple --- Cirad Umr Innovation, France Estelle Biénabe --- Cirad Umr Innovation, France Danielle Barret --- Cirad-Dgdrs, France Gilles Saint-Martin --- Cirad-Dgdrs, FranceThe need for technological transition and the context of the privatization of public research funding both challenge the evolution of methods to assess the impact of research in the agricultural and food sectors. We analyze this evolution through a literature... -
Reckoning the risks and rewards of fertilizer micro-dosing in a sub-humid farming system in Tanzania
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lutengano Mwinuka --- Department of Economics and Statistics, Tanzania Khamaldin Daud Mutabazi --- School of Agricultural Economics and Business Studies, Tanzania Jeremia Makindara --- School of Agricultural Economics and Business Studies, Tanzania Stefan Sieber --- Leibniz Centre for Agricultural Landscape Research (ZALF) e. V., GermanySmallholder farmers are reluctant to risk investing in fertilizers. To understand how risk is perceived and how economic returns are distributed before the decision to invest in fertilizer use is made, needs a systematic approach using localized applications. This study... -
Challenges for curriculum design: Considerations for a four-year business and accounting degree in South Africa
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Ilse Lubbe --- College of Accounting, South AfricaKnowledge in accounting has expanded exponentially over the last two decades, along with a call from accounting education committees and employers for students to acquire competencies for a global market. However, the time allocation of three years for undergraduate accounting... -
Growth and nutritional qualities of three ocimum species as affected by methods of propagation
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: A. I. Okunlola --- Department of Crop, Soil and Pest Management, Nigeria O. C. Ogungbite --- Department of Biology, Nigeria G. F. Hassan --- Department of Crop, Soil and Pest Management, NigeriaOcimum species are well known for their medicinal values and this has increased demand from individuals and the pharmaceutical industry. In order to meet the demand for this plant species three different Ocimum species (Ocimum basilicum, Ocimum gratissimum and Ocimum... -
Challenges to implementing the food-based dietary guidelines in the South African primary school curriculum: a qualitative study exploring the perceptions of principals and curriculum advisors
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Kim Anh Nguyen --- Non-Communicable Diseases Research Unit, South Africa Anniza De Villiers --- Non-Communicable Diseases Research Unit, South Africa Jean Marie Fourie --- Non-Communicable Diseases Research Unit, South Africa Michael Hendricks --- School of Child and Adolescent Health, South AfricaObjectives: The South African food-based dietary guidelines (FBDG) were developed and implemented to promote healthy lifestyles in the population along with preventing non-communicable diseases and other forms of diet-related illness. The FBDG were recommended for implementation within the national school... -
Evaluation of mefenoxam and fludioxonil for control of Rhizoctonia solani, Pythium ultimum and Fusarium solani on cowpea
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tshekgene M Ramusi --- Department of Plant and Soil Sciences, South Africa Jacquie E van der Waals --- Department of Plant and Soil Sciences, South Africa Nico Labuschagne --- Department of Plant and Soil Sciences, South Africa Theresa AS Aveling --- Department of Plant and Soil Sciences, South AfricaCowpea (Vigna unguiculata) is susceptible to pathogens such as Rhizoctonia solani, Pythium ultimum and Fusarium solani, which cause seedling diseases in cowpea and result in low yields. Three commercial synthetic fungicides containing mefenoxam 350 g ai L−1, mefenoxam 240 g ai L−1... -
Valuable Russian wheat aphid-resistant bread wheat accessions identified using four South African Diuraphis noxia biotypes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Vicki L Tolmay --- Agricultural Research Council-Small Grain Institute, South Africa Mardé Booyse --- Agricultural Research Council Infruitec-Nietvoorbij, South AfricaResistance-breaking biotypes of Diuraphis noxia have been reported in both the USA and South Africa where commercial cultivars with genetic resistance to this pest have been deployed. The need to identify novel Russian wheat aphid (RWA) resistance for deployment against... -
Effect of varying degrees of plant residue cover from different crops on annual medic pasture re-establishment and production
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Andries A Le Roux --- Directorate Plant Sciences, Western Cape Department of Agriculture, South Africa Johann A Strauss --- Directorate Plant Sciences, Western Cape Department of Agriculture, South Africa Petrus J Pieterse --- Department of Agronomy, South AfricaAnnual medics can play an important role as a pasture crop in short-rotation pasture-cropping systems in the Overberg district of South Africa. Permanent soil cover, an important aspect of conservation agriculture, and different crops in rotation may be, amongst other... -
Vestigial appendicular skeletons in the African and Malagasy skink species Feylinia grandisquamis, Melanoseps ater, Grandidierina lineata and Voeltzkowia mira
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Rachel Liniewski --- , , USA Shane Stanley --- , USA Julia Andrade --- , , USA Phil Senter --- , , USAVestigial appendicular skeletons are present but have not previously been described and illustrated in the skink species Feylinia grandisquamis and Melanoseps ater. Vestigial appendicular skeletons have been described and illustrated in only one specimen of Grandidierina lineata and in a... -
Appendicular skeleton of the vestigial-limbed African skink Eumecia anchietae
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Shane G. Stanley --- , , USA Rachel M. Liniewski --- , , USA Philip J. Senter --- , , USAWithin the lizard family Scincidae (the skinks) are numerous examples of species with vestigial limbs and girdles, but these vestigial structures remain undescribed for many such species. Here we seek to partially fill this gap in knowledge by describing the... -
Double trouble: hoarseness and Horner’s after supraclavicular brachial plexus block
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Rohini Mayur Balaji --- Kauvery Hospital, India Khaja Mohideen Sherfudeen --- Kauvery Hospital, India Senthil Kumar --- Kauvery Hospital, IndiaSupraclavicular brachial plexus block is a popular procedure for surgeries of the upper limb. Although separate instances of Horner’s syndrome and recurrent laryngeal nerve palsies have been previously reported with this approach and one combined incidence has been reported following... -
Nitrogen leakages and vegetable dry matter yield in a subtropical wetland soil amended with cattle manure and mineral nitrogen fertiliser
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johnson Masaka --- Department of Land and Water Resources Management, Faculty of Natural Resources Management and Agriculture, Zimbabwe Eliton Chivandi --- School of Physiology, Faculty of Health Sciences, South AfricaThe response of nitrous oxide emission and nitrate leaching to increased nitrogen (N) fertiliser and cattle manure applications to wetland vegetable cropping in subtropical Africa have significant impacts on the atmospheric and terrestrial environments. Two field experiments were carried out... -
Development of a low-resolution genome scan marker set for the acceleration of major gene or QTL mapping in wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Elsabet Wessels --- CenGen (Pty) Ltd, South Africa Renée Prins --- CenGen (Pty) Ltd, South AfricaThe traditional approach to identify targeted quantitative trait loci (QTL) or genes in a mapping study is to develop partial to comprehensive genetic maps by using a fairly large number of molecular markers. This is a cumbersome and potentially expensive... -
Optimization of copper nanoparticle biosynthesis process using aqueous extract of Andrographis paniculata
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Supratim Biswas --- Mineral Processing and Technology Research Centre, Department of Metallurgy Faculty of Engineering & The Built Environment, South Africa Suparna Chakraborty --- School of Materials Science and Nanotechnology, India Antoine F. Mulaba-Bafubiandi --- Mineral Processing and Technology Research Centre, Department of Metallurgy Faculty of Engineering & The Built Environment, South AfricaThe competency of aqueous extract of Andrographis paniculata (kalmegh) to reduce copper nitrate for the biosynthesis of copper nanoparticle (CuNPs) was investigated. The experiments were set up according to the design of experiment technique and the results were analyzed for... -
Evaluation of the Intubating Laryngeal Mask Airway (ILMA) as an intubation conduit in patients with a cervical collar simulating fixed cervical spine
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Saini --- Department of Anaesthesiology & Critical Care, India R Bala --- Department of Anaesthesiology & Critical Care, India R Singh --- Department of Orthopaedics Paraplegia and Rehabilitation, IndiaBackground: Cervical spine immobilisation with a semi-rigid cervical collar imposes difficulty in tracheal intubation. There is increasing use of the Intubating Laryngeal Mask Airway (LMA- FastrachTM) for intubation in patients with difficult airways. The present study was conducted to assess... -
Effect of land use on water quality and phytoplankton community in the tropical Khami River in semi-arid southwest Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Dzinomwa --- Department of Environmental Science and Health, Faculty of Applied Science, Zimbabwe HGT Ndagurwa --- Department of Forest Resources and Wildlife Management, Faculty of Applied Science, ZimbabweThe water quality and phytoplankton community assemblage of the Khami River, a tropical river sub catchment in semi-arid southwest Zimbabwe impacted by agriculture and urban land use, were examined in March 2015. Conductivity, sulphates, total dissolved solids and salinity were... -
Developing primary health care and public health competencies in undergraduate medical students
Item type: Journal Article • Journal: South African Family Practice • Authors: Stephen E Knight --- School of Nursing and Public Health, College of Health Sciences, South Africa Andrew J Ross --- School of Nursing and Public Health, College of Health Sciences, South Africa Ozayr Mahomed --- School of Nursing and Public Health, College of Health Sciences, South AfricaBackground: The Selective Programme (Selectives) at the University of KwaZulu-Natal (UKZN) is a three-year longitudinal, community-based programme within the undergraduate medical curriculum, which aims to develop primary health care (PHC) and public health competencies in students using the community-oriented primary... -
Endo-parasites of public-health importance recovered from rodents in the Durban metropolitan area, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Colleen E Archer --- School of Life Sciences, College of Agriculture, Engineering & Science, South Africa Christopher C Appleton --- School of Life Sciences, College of Agriculture, Engineering & Science, South Africa Samson Mukaratirwa --- School of Life Sciences, College of Agriculture, Engineering & Science, South Africa Jennifer Lamb --- School of Life Sciences, College of Agriculture, Engineering & Science, South Africa M Corrie Schoeman --- School of Life Sciences, College of Agriculture, Engineering & Science, South AfricaBackground: Parasite infections of public health importance carried by Rattus spp. on the African continent (excluding toxoplasmosis) have not been adequately researched. The aim of this study was to investigate endoparasites of public health importance, particularly those associated with R... -
Assessment of food gardens as nutrition tool in primary schools in South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Sunette M Laurie --- Agricultural Research Council - Vegetable and Ornamental Plants, South Africa Mieke Faber --- Non-Communicable Diseases Research Unit, South African Medical Research Council, South Africa Mamohkele M Maduna --- Department of Basic Education, Directorate Sustainable Food Production in Schools, South AfricaObjectives: To assess knowledge, perceptions and practices on food production amongst learners and educators, gardening activities and management of school food gardens in schools participating in the National School Nutrition Programme. -
The significance of residual phosphorus and potassium fertiliser in countering yield decline in a fourth rotation of Pinus patula in Swaziland
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: JW Crous AR Morris MC ScholesResearch into the sustained production from short rotations of Pinus patula on the Usutu plantation has shown that operational application of P and K fertiliser corrected the 20% growth decline that was observed between first and second rotations on about... -
Bark removal for medicinal use predisposes indigenous forest trees to wood degradation in Zambia
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: D Chungu A Muimba-Kankolongo J Roux FM MalamboBark harvesting for medicinal purposes has become widespread in Zambia, mainly due to the high levels of poverty among the population. The injury caused to trees leads to wood deterioration as a result of insect damage and fungal infection. This... -
Sustainable agriculture practices and livelihoods in pro-poor smallholder farming systems in southern Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Clifton Makate --- International Centre for Tropical Agriculture (CIAT), Zimbabwe Marshall Makate --- Department of Economics, USA Nelson Mango --- International Centre for Tropical Agriculture, UgandaClimate variability and change threaten and impact negatively on biodiversity, agricultural sustainability, ecosystems, and economic and social structures – factors that are all vital for human resilience and wellbeing. To cope with these challenges, embracing sustainability in food production is... -
Analytical Review of African Agribusiness Competitiveness
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Suresh Chandra Babu --- International Food Policy Research Institute, USA Mahika Shishodia --- International Food Policy Research Institute, USAAgribusiness has a major role to play in the transformation of the agricultural sector in Africa. With the demand for high-value food products increasing across the world, there is an opportunity for an increase in income/employment through the production and... -
Maturity, protein content and yield stability of cowpea in Uganda
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Gabriel Ddamulira --- National Crops Resources Research Institute, Uganda Carlos AF Santos --- Embrapa Semi-Arid, Brazil Mildred Alanyo --- National Crops Resources Research Institute, Uganda Idd Ramathani --- National Crops Resources Research Institute, Uganda Mcebisi Maphosa --- Department of Crop and Soil Sciences, ZimbabweLow yields and protein content are major constraints to cowpea production in semi-arid areas. A study was conducted to determine cowpea performance across diverse environments in Uganda. Twenty-eight cowpea genotypes were evaluated in a randomised complete block design with three... -
Grazing management that regenerates ecosystem function and grazingland livelihoods
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Richard Teague --- Department of Ecosystem Science and Management, USA Matt Barnes --- Shining Horizons Land Management LLC, USAAdopting a systems view and regenerative philosophy can indicate how to regenerate ecosystem function on commercial-scale agro-ecological landscapes. Adaptive multi-paddock grazing management is an example of an approach for grazinglands. Leading conservation farmers have achieved superior results in ecosystem improvement,... -
The effect of low-level kelp supplementation on digestive enzyme activity levels in cultured abalone Haliotis midae fed formulated feeds
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Nel --- Department of Ichthyology and Fisheries Science, South Africa BI Pletschke --- Department of Biochemistry and Microbiology, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South AfricaPrevious studies have found that macroalgal inclusion in formulated diets for cultured abalone improves feed utilisation, and it was suggested that seaweed-associated bacteria supply enzymes that aid in the animal's digestion. In the present study, we hypothesised that kelp supplementation... -
Effects of kelp Ecklonia maxima inclusion in formulated feed on the growth, feed utilisation and gut microbiota of South African abalone Haliotis midae
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Nel --- Department of Ichthyology and Fisheries Science, South Africa BI Pletschke --- Department of Biochemistry and Microbiology, South Africa CLW Jones --- Department of Ichthyology and Fisheries Science, South Africa J Kemp --- Department of Ichthyology and Fisheries Science, South Africa G Robinson --- Department of Ichthyology and Fisheries Science, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South AfricaThe effect of kelp Ecklonia maxima inclusion in formulated feeds on abalone growth and gut bacterial communities has not been previously investigated in South Africa. An eight-month on-farm growth trial was conducted with sub-adult Haliotis midae (∼43 mm shell length)... -
The development of reforestation options for dryland farmland in south-western Australia: a review
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Richard J Harper --- School of Veterinary and Life Sciences, Australia Stanley J Sochacki --- School of Veterinary and Life Sciences, Australia John F McGrath --- School of Veterinary and Life Sciences, AustraliaCurrent forest industries in south-western Australia are based on regrowth natural eucalypt forests and Pinus and Eucalyptus spp. plantations, and restricted to areas with >600 mm y−1 annual rainfall. Dryland farming systems have been developed across 20 million ha in... -
Education without borders: Internationalisation of the tourism business curriculum in the central Baltic area
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sanna-Mari Renfors --- Tourism Business Research Group, Faculty of Service Business, FinlandIn the case of tourism, it is important to consider the geographical location of the destination and its part in a larger entity. In the Baltic Sea area, destination products covering the highlights of the seashore have growing importance and... -
Price, exclusivity and luxury: Exploring London’s luxury hotels
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Andy Heyes --- Stenden Hotel Management School, The Netherlands Conrad Lashley --- Stenden Hotel Management School, The NetherlandsLuxury is commonly said to be in the eye of the beholder. It typically relies upon the comparison with the given norms, and reflects the consumption patterns of society's economic elite. Research into the luxury retail industries have grown in... -
Pentalogy of Cantrell and anaesthesia: a case report
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Alexis Oosthuizen --- Department of Anaesthesia, South AfricaPentalogy of Cantrell, a rare congenital thoracoabdominal disruption, consists of a supraumbilical abdominal wall defect, lower sternal defect, agenesis of the anterior portion of the diaphragm, an absence of the diaphragmatic part of the pericardium, and a malformation of the... -
Awake percutaneous tracheostomy as an alternative to open emergency tracheostomy in a threatened airway
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RE Hodgson --- Department of Anaesthesia, South Africa TK Pillay --- Department of Anaesthesia, South AfricaBackground: This case report details the management of a patient with a threatened airway booked for an emergency awake tracheostomy but successfully managed with a percutaneous tracheostomy technique. The case illustrates the challenges of managing a severely compromised airway and... -
Interrogating patient-centredness in undergraduate medical education using an integrated behaviour model
Item type: Journal Article • Journal: South African Family Practice • Authors: E Archer --- Centre for Health Professions Education, South Africa EM Bitzer --- Centre for Higher and Adult Education, South Africa BB van Heerden --- Faculty of Medicine and Health Sciences, South AfricaBackground: Patient-centredness, an approach that puts the patient at the centre of the consultation, thus focusing on patients instead of on his/her diseases, has been identified by most medical schools as a desired core competence of their graduates. Despite some... -
The taxonomic position and breeding range of Golden Nightjar Caprimulgus eximius (Caprimulgidae)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Yvonne Lawrie --- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, UK Robert Swann --- , UK Peter Stronach --- , UK Yoav Perlman --- Israel Ornithological Center, Israel J Martin Collinson --- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, UKGolden Nightjar Caprimulgus eximius is an apparently sedentary sub-Saharan species with a breeding range extending from Senegal and Mauritania to Sudan. Although genetic studies of nightjars and related Caprimulgiformes have been published previously, none has included Golden Nightjar. In this... -
![Comparison of glycaemic indices of some local beans (<em>Vigna unguiculata</em> [Linn] Walp varieties) in Nigerians](https://www.nisc.co.za/media/thumbs/201409081410169008622357943.jpg)
Comparison of glycaemic indices of some local beans (Vigna unguiculata [Linn] Walp varieties) in Nigerians
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: OB Olopade --- Department of Medicine, Endocrinology, Diabetes & Metabolism, Nigeria IA Odeniyi --- Department of Medicine, Endocrinology, Diabetes & Metabolism, Nigeria SO Iwuala --- Department of Medicine, Endocrinology, Diabetes & Metabolism, Nigeria OO Kayode --- Department of Medicine, Endocrinology, Diabetes & Metabolism, Nigeria OA Fasanmade --- Department of Medicine, Endocrinology, Diabetes & Metabolism, Nigeria MO Ajala --- Department of Chemical Pathology, Nigeria PO Chimah --- Department of Dietetics, Nigeria AE Ohwovoriole --- Department of Medicine, Endocrinology, Diabetes & Metabolism, NigeriaBackground: Beans are recommended for their richness and for their salutary effect on blood glucose. Inter-species differences impact on blood glucose. What appeared unknown is whether varieties of beans of the same species (Vigna unguiculata [Linn] Walp) have differential effects... -
A retrospective analysis of electrocardiographic abnormalities found in black South African patients with diabetes attending a regional hospital in KwaZulu-Natal
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Pillay --- Department of Internal Medicine, South Africa R Hift --- School of Clinical Medicine, South Africa C Aldous --- School of Clinical Medicine, South Africa -
Practice of community-service doctors in the assessment and medico-legal documentation of common physical assault cases
Item type: Journal Article • Journal: South African Family Practice • Authors: L Fouché --- Division of Health Sciences Education, Faculty of Health Sciences, South Africa J Bezuidenhout --- Division of Health Sciences Education, Faculty of Health Sciences, South Africa C Liebenberg --- Department of Forensic Medicine, School of Medicine, Faculty of Health Sciences, South Africa AO Adefuye --- Division of Health Sciences Education, Faculty of Health Sciences, South AfricaBackground: In South Africa, allegations of physical assault are managed primarily at the primary healthcare level, where they are attended to by medical officers or community service doctors (CSDs). However, reports that the knowledge and skills provided at undergraduate level... -
Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TK Mkare --- Kenya Marine and Fisheries Research Institute, Kenya JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa PR Teske --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa CA Matthee --- Evolutionary Genomics Group, Department of Botany and Zoology, South AfricaThe penaeid prawns Fenneropenaeus indicus and Metapenaeus monoceros support shallow-water prawn fisheries in the south-west Indian Ocean. They are sympatric and have similar life histories, including developmental stages that depend on estuarine and marine habitats and a short dispersal duration... -
Anaesthetic challenges in a patient with Klippel–Feil syndrome scheduled for panendoscopy and biopsy
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Chitnis --- Department of Anaesthesia and Intensive Care Medicine, United Kingdom KO Enohumah --- Department of Anaesthesia and Intensive Care Medicine, United KingdomKlippel–Feil syndrome is one of the congenital causes of difficult airway. It is characterised by a classic triad of a short neck, restricted cervical spine movement, and a low posterior hairline, which can pose a significant challenge to the anaesthetist... -
Intra-articular dexmedetomidine with bupivacaine versus bupivacaine alone for postoperative analgesia after knee arthroscopy
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Shaimaa F Mostafa --- Department of Anesthesia and Surgical ICU, Faculty of Medicine, Egypt Gehan M Eid --- Department of Anesthesia and Surgical ICU, Faculty of Medicine, Egypt Mohammed A Abdullah --- Department of Anesthesia and Surgical ICU, Faculty of Medicine, Egypt Rehab S Elkalla --- Department of Anesthesia and Surgical ICU, Faculty of Medicine, EgyptBackground: Optimal relief of pain after knee arthroscopy is essential for early rehabilitation and mobilisation and to minimise postoperative morbidity. This study’s aim was to assess dexmedetomidine as an additive to intra-articular (IA) bupivacaine in terms of analgesic duration and... -
Seasonal variations in the diet and food selection of the Algerian hedgehog Atelerix algirus
Item type: Journal Article • Journal: African Zoology • Authors: Chafika Mouhoub-Sayah --- Laboratoire de Zoologie Appliquée et d’Ecophysiologie Animale, Faculté des Sciences de la Nature et de la Vie, Algeria Hafsa Djoudad-Kadji --- Laboratoire de Zoologie Appliquée et d’Ecophysiologie Animale, Faculté des Sciences de la Nature et de la Vie, Algeria Florian Kletty --- Université de Strasbourg, CNRS, IPHC, France André Malan --- Institut des Neurosciences Cellulaires et Intégratives, France Jean-Patrice Robin --- Université de Strasbourg, CNRS, IPHC, France Michel Saboureau --- Institut des Neurosciences Cellulaires et Intégratives, France Caroline Habold --- Université de Strasbourg, CNRS, IPHC, FranceThe Algerian hedgehog Atelerix algirus is an insectivorous species. However, the exact composition of its natural diet remains largely undetermined, especially in relation to seasonal variations in food availability. From March to November, we simultaneously analysed the composition of 180... -
An exploration of the reasons women give for choosing legal termination of pregnancy at Soshanguve Community Health Centre, Pretoria, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Carrien Steyn Indiran Govender --- Department of Family Medicine and Primary Health Care, South Africa John Velaphi NdimandeBackground: Termination of pregnancy (TOP) is one of the most commonly performed gynaecological procedures in the world and was legalised in South Africa in 1996 with the passing of the Choice on Termination of Pregnancy Act, 1996 (Act No. 29... -
Farm household typology and adoption of climate-smart agriculture practices in smallholder farming systems of southern Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Clifton Makate --- International Centre for Tropical Agriculture (CIAT), Zimbabwe Marshall Makate --- Department of Economics, USA Nelson Mango --- International Centre for Tropical Agriculture, UgandaEnhancing adoption rates of climate-smart agriculture practices and their impact on livelihoods requires promotional persistence, complemented by a thorough socioeconomic analysis that recognizes the heterogeneity of smallholder farmers. Farm typologies are a useful tool to assist in understanding and unpacking... -
Unplanned extubations in a level one trauma ICU
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: KM Köhne --- Department of Anaesthesiology, South Africa T Hardcastle --- Trauma Service, Inkosi Albert Luthuli Central Hospital and Department of Surgery, University of KwaZulu-Natal, South AfricaBackground: Unplanned endotracheal extubation (UE) is the most common airway adverse event in ICU. This study aimed to determine the incidence, characteristics, complications and outcomes of UE in patients in a level one trauma ICU. -
Superficial location of the brachial plexus and axillary artery in relation to pectoralis minor: a case report
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: K Keet --- Division of Clinical Anatomy and Biological Anthropology, Department of Human Biology, South Africa G Louw --- Division of Clinical Anatomy and Biological Anthropology, Department of Human Biology, South AfricaKnowledge of the anatomy of the infraclavicular fossa is important as this region is a target site for anaesthesia of the upper limb during infraclavicular approaches to brachial plexus blocks and in central venous cannulation of the axillary or subclavian... -
Transforaminal epidural steroid injections for the treatment of lumbosacral radicular pain in a Nigeria tertiary hospital: observational study
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: ZA Suleiman --- Department of Anaesthesia, Nigeria IK Kolawole --- Department of Anaesthesia, Nigeria BA Ahmed --- Department of Surgery, Nigeria OM Babalola --- Department of Surgery, Nigeria GH Ibraheem --- Department of Surgery, NigeriaBackground: Lumbosacral radicular pain is a common cause of chronic low back pain. Despite published reports of effectiveness of transforaminal epidural steroid for lumbosacral radicular pain, it is underutilised in many tertiary hospitals in sub-Saharan Africa. This study assessed the... -
First records of marine tardigrades (Arthrotardigrada) from Fuerteventura (Canary Islands, Spain)
Item type: Journal Article • Journal: African Zoology • Authors: Łukasz Kaczmarek --- Department of Animal Taxonomy and Ecology, Poland Paul Bartels --- Department of Biology, Warren Wilson College, USA Milena Roszkowska --- Department of Animal Taxonomy and Ecology, PolandMarine tardigrades are very poorly known and up to now only c. 200 taxa have been reported around the world (mostly from European coasts). In a marine algae sample, collected on the coast of Fuerteventura island (Atlantic Ocean, Canary Islands),... -
Usage of antibiotics in the intensive care units of an academic tertiary-level hospital
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Deanne Johnston --- Department of Pharmacy and Pharmacology, South Africa Razeeya Khan --- Department of Pharmacy and Pharmacology, South Africa Jacqui Miot --- Department of Pharmacy and Pharmacology, South Africa Shirra Moch --- Critical Care Infection Collaboration, South Africa Yolande van Deventer --- Department of Pharmacy and Pharmacology, South Africa Guy Richards --- Division of Critical Care, South AfricaBackground: The post-antibiotic era is approaching fast as multidrug-resistant bacteria emerge and the antibiotic pipeline slows to a trickle. Antibiotic stewardship requires that antibiotics be used appropriately and as such this study reviewed the utilisation of antibiotics in five adult... -
Considering soil quality when comparing disc and tine seed-drill openers for establishing wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Pieter A Swanepoel --- Department of Agronomy, South Africa G André Agenbag --- Department of Agronomy, South Africa Johann A Strauss --- Directorate Plant Sciences, Western Cape Department of Agriculture, South AfricaWheat (Triticum aestivum) is planted widely in the Western Cape of South Africa in conservation agriculture systems. Although most producers rely on tine openers to establish wheat, the interest in planters with disc openers is increasing. Given that the soils... -
A review of conservation agriculture research in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Corrie M Swanepoel --- Agricultural Research Council–Institute for Soil, South Africa Lourens H Swanepoel --- Department of Zoology, South Africa Hendrik J Smith --- Grain SA, South AfricaConservation agriculture (CA) is advocated as a sustainable farming method to improve soil health, increase crop yields and food security, while reducing input costs. In South Africa, a country with low rainfall, limited agricultural lands and a large smallholder farming... -
Sensitivity of selected chemical and biological soil quality parameters to tillage and rotational cover cropping at the Zanyokwe Irrigation Scheme, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Arnold N Njaimwe --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pearson NS Mnkeni --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pardon Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Isaiah IC Wakindiki --- Department of Agronomy, Faculty of Science and Agriculture, South AfricaSustainable management of soils requires knowledge of the impact of agronomic practices such as tillage and crop rotation on soil quality. The objective of this study was to identify soil chemical and biological soil attributes with high sensitivity to tillage... -
An EnSpm interspersed repeat identified in Triticum aestivum and implicated in resistance to Diuraphis noxia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Anandi Bierman --- Division of Bioinformatics, South Africa Anna-Maria Botha --- Department of Genetics, South AfricaDiuraphis noxia Kurdjumov, 1913 (Hemiptera: Aphididae), commonly known as the Russian wheat aphid, is a devastating pest of wheat and barley. Although fourteen sources of resistance (Dn genes) have been identified to date, none have been cloned. In this study... -
The bionomics of whitegrub species (Coleoptera: Scarabaeidae) affecting commercial forestry re-establishment in representative areas of the South African summer-rainfall region
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Derian Echeverri-Molina --- Department of Biology, School of Science and Technology, Sefako Makgatho Health Sciences University, South Africa Prem Govender --- Research and Postgraduate Studies Directorate, Sefako Makgatho Health Sciences University, South AfricaSouth African commercial forestry plants mainly Eucalyptus, Pinus and Acacia species. Invertebrate pests play a significant role in the establishment phase of these exotic trees. Whitegrubs, in particular, are known to affect seedling survival during this period. Their pest status... -
Plumage colour variations in the
Agapornis genus: a reviewItem type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Henriëtte van der Zwan --- Centre of Human Metabolomics, South Africa Carina Visser --- Department of Animal and Wildlife Sciences, South Africa Rencia van der Sluis --- Centre of Human Metabolomics, South AfricaThe genus Agapornis consists of nine small African parrot species that are globally well known as pets, but are also found in their native habitat. Illegal trapping, poaching and habitat destruction are the main threats these birds face in the... -
Predictors of life satisfaction among multicultural African families in South Korea
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Il-young Choi --- School of Management, South Korea Hyun-ju Choi --- Department of Cultural & Arts Management, South Korea Jeong-hee Lim --- Research Institute Multicultural Community, South Korea Seung-hye Jung --- School of Dance, South Korea Jae-kyeong Kim --- School of Management, South Korea Joon-ho Kim --- Department of Business Administration, South KoreaThe aim of this study was to predict perceived life satisfaction of multicultural African families living in South Korea in terms of their fluency in the Korean language, government support for education, and the experience of discrimination. A total of... -
Re-imagining Dzaleka: The Tumaini Festival and Refugee Visibility
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Catherine Makhumula --- Department of Drama, South AfricaIn this article, I explore the Tumaini Festival at Dzaleka Refugee Camp in Malawi as an important site for the re-imagination of place and the refugee. I argue that through the institution of the festival, refugee artists challenge the perception... -
Student’s perception of engineering design for competitiveness in Africa: The case of Tanzania, East Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lawrence Joseph Kerefu --- Department of Mechanical Engineering, Tanzania Juliana Zawadi Machuve --- Department of Mechanical and Industrial Engineering, TanzaniaEngineering is vital for addressing basic human needs, improving the quality of life and creating opportunities for sustainable prosperity at local, regional, national and global levels. However, Africa faces a shortage of engineers arising from the declining interest and enrolment... -
Socio-economic and Institutional Factors Influencing Uptake of Improved Sorghum Technologies in Embu, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: EL Chimoita --- Department of Agricultural Economics, Kenya CM Onyango --- Department of Crop Science and Protection, Kenya JP Gweyi-Onyango --- Department of Agricultural Science and Technology, Kenya JW Kimenju --- Department of Crop Science and Protection, KenyaFarmers’ socio-economic status and institutional support play a complementary role in influencing adoption of various improved agricultural value chain technologies. Despite considerable research efforts towards improving sorghum production and commercialisation to improve farmers’ socio-economic wellbeing in Kenya, a marginal number... -
Review of anthropogenic threats and biodiversity assessment of an Ethiopian soda lake, Lake Abijata
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Wagaw --- Department of Biology, Ethiopia S Mengistou --- Department of Zoological Sciences, Ethiopia A Getahun --- Department of Zoological Sciences, EthiopiaThe intention of this review is to assess the impact of anthropogenic activities on the biodiversity of Lake Abijata. The lake was established as a National Park, together with Lakes Shalla and Chitu, to conserve water birds. It has high... -
Developing pathways to improve smallholder agricultural productivity through ecological intensification technologies in semi-arid Limpopo, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Farirai Rusere --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Siyabusa Mkuhlani --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Olivier Crespo --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Lynn V. Dicks --- School of Biological Sciences, UKAgriculture faces an enormous global challenge of feeding nine billion people by 2050. This means a comprehensive intensification of agriculture is required. Ecological intensification is gaining momentum as a clearly defined vision for increasing agriculture productivity and sustainability. How ecological... -
Technology adoption typology and rice yield differentials in Ghana: Principal component analysis approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Franklin Nantui Mabe --- Department of Agricultural and Resource Economics, Faculty of Agribusiness and Communication Sciences, Ghana Samuel Arkoh Donkoh --- Department of Agricultural and Resource Economics, Faculty of Agribusiness and Communication Sciences, Ghana Seidu Al-Hassan --- Central Administration, GhanaThis study used primary data obtained from rice farmers in Guinea Savannah Zone (GSZ), Forest Savannah Transition Zone (FSTZ) and Coastal Savannah Zone (CSZ). Principal component analysis (PCA) was used to classify farmers into technology adopters. The study used Welch’s... -
Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Princess Z Mkhize --- Women’s Health and HIV Research Group, Department of Obstetrics and Gynaecology, T Naicker --- Optics and Imaging Centre, South Africa OA Onyangunga --- Optics and Imaging Centre, South Africa J Moodley --- Women’s Health and HIV Research Group, Department of Obstetrics and Gynaecology,Background: Iron and folic acid supplementation plays a major role in the prevention and control of iron-deficiency anaemia in pregnancy. Therefore, this study assesses adherence to prophylactic iron supplementation during the antenatal period in South Africa. -
Local food and tourism in the Global South
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Gabriel CM Laeis --- Department of Hospitality, Tourism and Event Management, GermanyMany countries in the Global South import a significant share of the food served to tourists. For decades, closer linkages of local food producer and the resort industry have been heralded as an antidote to this unsustainable circumstance, further encouraged... -
Can long-term content analysis of print media be used to examine species composition, population demography and changes in distributional range of recreational fishery species?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WM Potts --- Department of Ichthyology and Fisheries Science, South Africa T Jordan --- Department of Ichthyology and Fisheries Science, South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South AfricaAlthough marine recreational fisheries are socially and economically important, there is often limited funding for their monitoring and assessment. With South African anglers reporting catch declines for almost all targeted species and little long-term monitoring data available, novel methods need... -
Agulhas long-billed lark (Certhilauda brevirostris) densities, population estimates and habitat association in a transformed landscape
Item type: Journal Article • Journal: African Zoology • Authors: Celeste de Kock --- Department of Continuing Education, United Kingdom Alan TK Lee --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaThe effects of agricultural landscape transformation and subsequent habitat associations have been little studied for the Agulhas long-billed lark (Certhilauda brevirostris), a regionally threatened species in the Overberg, Western Cape, South Africa. Point count surveys were conducted throughout the Overberg... -
The potential impact of dietary supplement adulteration on patient assessment and treatment from a healthcare provider’s perspective
Item type: Journal Article • Journal: South African Family Practice • Authors: Gary Gabriels --- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, South Africa Mohamed Irhuma --- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, South AfricaDietary supplements have been manufactured and supplied to the market with the objective of enhancing the overall health of the general population and optimising the performance of athletes. The perceived intention of dietary supplementation is to increase the nutritional content... -
Effect of dietary vitamin E on biochemical, oxidative stress and immunological parameters in Nile tilapia exposed to penoxsulam
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Saber --- Forensic Medicine and Toxicology Department, Egypt M ElHady --- Fish Diseases and Management Department, Egypt HA Ali --- Department of Biochemistry, EgyptThis study was performed to determine the median lethal concentration (96-h LC50) of penoxsulam (PNX) in Nile tilapia, Oreochromis niloticus, fingerlings and to investigate the protective effect of vitamin E (Vit E) against biochemical and immunological alterations induced by two... -
Does tertiary education in South Africa equip professional foresters for the future?
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Palesa Mgaga --- School of Animal, Plant and Environmental Sciences, South Africa Mary C Scholes --- School of Animal, Plant and Environmental Sciences, South AfricaA modern day forester in South Africa assumes a variety of roles that constantly challenge them to remain professionally relevant in a dynamic system including the continuously expanding number of stakeholders that cuts across political, social and economic boundaries. This... -
The influence of species, tree improvement and cultural practices on rotation-end fibre production of Eucalyptus pulpwood plantations in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jacob Crous --- Sappi Forests, South Africa Giovanni Sale --- Sappi Forests, South Africa Thimagren Naidoo --- Sappi Forests, South AfricaTo remain competitive on a global scale it is necessary for forestry companies to increase the yield per hectare and work towards reducing the unit cost of timber. A three-trial series with a 24 factorial design and two replications at... -
The use of nitrogen fertilisation for suppressing Mycosphaerella in Eucalyptus dunnii
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Alexandre Techy de Almeida Garrett --- UNICENTRO, Brazil Luciano Rodrigo Lanssanova --- UNICENTRO, Brazil Mariane Bueno de Camargo --- Klabin SA, Brazil Andrea Nogueira Dias --- Department of Forest Engineering, Brazil Flávio Augusto de Oliveira Garcia --- Department of Forest Engineering, BrazilMycosphaerella leaf disease (MLD) is a pathogen of eucalypt plantations causing leaf spots and defoliation, and affecting growth. In this study, two different dosages of nitrogen fertilisation together with a control treatment currently used for two clones being affected by... -
Job security and workaholism among non-permanent workers: The moderating influences of corporate culture
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joon-ho Kim --- Department of Business Administration, South Korea Seung-hye Jung --- School of Dance, South Korea Soo-yun Yang --- Department of Cultural Contents, South Korea Hyun-ju Choi --- Department of Cultural & Arts Management, South KoreaThe present study examined aspects of job security, leadership risk (corporate-centric management style, short-term performance-orientedness, and subordinate authoritarianism), emotional exhaustion, and workaholism among 1 009 casual foreign workers from multicultural families living in South Korea. The nationalities of the casual... -
Traditional healing and counselling services partnership in multicultural South Africa: A multiple case study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Petro van der Merwe --- Department of Psychology, South AfricaThis study explored partnership opportunities between traditional healing and counselling psychology services in South Africa. Informants comprised a traditional healer and two counselling psychologists who completed interviews on practices in which they engaged and that could be bridged for the... -
Effect of short-term maize–cover crop rotations on weed emergence, biomass and species composition under conservation agriculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Joyful T Rugare --- Department of Agronomy, South Africa Petrus J Pieterse --- Department of Agronomy, South Africa Stanford Mabasa --- Department of Crop Science, ZimbabweRecent advances in crop production have identified crop rotation with cover crops as a key component of sustainable crop production. However, the implementation of conservation agriculture (CA) systems involving crop rotations in Zimbabwe is still minimal partly due to the... -
Effects of long-term grazed crop and pasture systems under no-till on organic matter fractions and selected quality parameters of soil in the Overberg, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jacques DV Smith --- Department of Soil Science, South Africa Johann A Strauss --- Western Cape Department of Agriculture, South Africa Ailsa G Hardie --- Department of Soil Science, South AfricaThere is limited soil research on semi-arid, grazed no-till crop and pasture systems. The long-term (10 years) effect of three grazed no-till dryland crop and pasture rotation systems, and perennial lucerne pasture were assessed on soil carbon (C) and nitrogen... -
Vulnerability, institutional arrangements and the adaptation choices made by farmers in the Western Cape province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sanne Raaijmakers --- Fagelstraat 75-HS, the Netherlands Pieter A Swanepoel --- Department of Agronomy, South AfricaFrom 2015 to 2018, South Africa suffered from the worst drought since 1904. Climate change is predicted to increase both the frequency and intensity of droughts in parts of South Africa. In this light it is evident that agricultural systems... -
Does conservation agriculture technology reduce farm household poverty? Evidence from rural Zambia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abdul Nafeo Abdulai --- , Ghana Awal Abdul-Rahaman --- , GhanaThis study examines the adoption and impact of conservation agriculture on farm household poverty in Zambia using both provincial and average poverty lines, given that the poverty line is a key driver to the determination of household poverty. We probe... -
Supporting innovation through a multi-level platforms approach: A case study of the South African fresh fruit industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Richmore Dondofema --- , South Africa Sara S. (Saartjie) Grobbelaar --- , South AfricaAgricultural innovation platforms have become recognized as a key mechanism through which to stimulate innovation for inclusive development (I4ID) by serving as a space for agricultural stakeholders to engage, and to develop and diffuse agricultural innovations. This study investigates how... -
Teaching Canadian Literature in the University of Nairobi
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Muchugu Kiiru --- , KenyaThis paper discusses experiences of teaching Canadian literature in the Department of Literature, University of Nairobi, Kenya. For a long time, the University of Nairobi syllabus required that teaching Canadian literature, or any foreign literature for that matter, should be... -
Relationships between farmer perceptions and temporal variation in nutritive value of browse species on savanna rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Clarice P Mudzengi --- , Zimbabwe Amon Murwira --- , Zimbabwe Tinyiko Halimani --- , Zimbabwe Herve Fritz --- , France Chrispen Murungweni --- , ZimbabweIn livestock-based livelihoods of the developing world, determination of the nutritive value of browse species is mainly associated with farmer perceptions. Additionally, little is known on seasonal variation in nutritive value of these species in some areas. Therefore, chemical analysis... -
Relative growth of invasive and indigenous tilapiine cichlid fish in Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SJ Bradbeer --- , United Kingdom BP Ngatunga --- , Tanzania GF Turner --- , United Kingdom MJ Genner --- , United KingdomNon-native species have been widely distributed across Africa for the enhancement of capture fisheries, but it can be unclear what benefits in terms of fisheries production the non-native species bring, compared with native species. Here we compared the relative growth... -
Stand structure, regeneration and seed dispersal patterns of Nothofagus glauca (Hualo) in central Chile
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rafael Navarro-Cerrillo --- , España Antonio Cabrera-Ariza --- , Chile Antonio Avaria --- , Chile Guillermo Palacios-Rodríguez --- , España Rómulo Santelices-Moya --- , ChileGrowing interest in functional silviculture is promoting new approaches to the study of seed dispersal and regeneration, two of the key processes that determine the structure and dynamics of plant populations. Nothofagus glauca is an obligate-seeding tree species typical of... -
Trends in populations of Blue Crane Anthropoides paradiseus in agricultural landscapes of Western Cape, South Africa, as measured by road counts
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Donella J Young --- , South Africa James A Harrison --- , South AfricaPopulation trends of the Blue Crane Anthropoides paradiseus were monitored by volunteers participating in Coordinated Avifaunal Roadcounts (CAR) in the Overberg and Swartland agricultural regions of the Western Cape province from 1993 and 1996, respectively, until 2019 in the Overberg... -
Maize (Zea mays) yield and its relationship to soil properties under integrated fertility, mulch and tillage management in urban agriculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A Shumba --- , Zimbabwe N Dunjana --- , Zimbabwe B Nyamasoka --- , Zimbabwe P Nyamugafata --- , Zimbabwe S Madyiwa --- , Zimbabwe J Nyamangara --- , ZimbabweUrban agriculture improves people’s livelihoods in developing countries. An experiment was carried out to assess effects of soil fertility, mulch and tillage on soil organic carbon (SOC), aggregate stability (Ima), bulk density (BD), steady state infiltration rate (SSIR) and maize... -
Ranging behaviour of Long-crested Eagles Lophaetus occipitalis in human-modified landscapes of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Machawe I Maphalala --- , South Africa Ara Monadjem --- , Eswatini Keith L Bildstein --- , South Africa Shane McPherson --- , South Africa Ben Hoffman --- , South Africa Colleen T Downs --- , South AfricaThe ranging behaviour of raptors in human-altered environments, such as agricultural and suburban landscapes, is becoming increasingly important for conservationists in the context of unprecedented high rates of anthropogenic land use change. We studied the movement ecology of adult Long-crested... -
Cyanobacterial abundance and microcystins in water, seston and fish tissues in Lake Hora-Arsedi (Ethiopia)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TW Zewde --- , Ethiopia D Kifle --- , Ethiopia JA Johansen --- , Norway TB Demissie --- , Ethiopia JH Hansen --- , Norway Z Tadesse --- , EthiopiaThe phytoplanktonic composition with a focus on cyanobacteria, intra- and extracellular microcystins (MCs) concentrations and MCs concentrations in fish tissues were investigated in Lake Hora-Arsedi (Ethiopia). The phytoplankton community comprised of 40 species in the first phase of the study... -
Trends in chemical pollution and ecological status of Lake Ziway, Ethiopia: a review focussing on nutrients, metals and pesticides
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LB Merga --- , The Netherlands AA Mengistie --- , Ethiopia JH Faber --- , The Netherlands PJ Van den Brink --- , The NetherlandsAquatic ecosystems contribute to human well-being by delivering ecosystem services, but their protection has been given low priority in Africa. Lake Ziway in the Ethiopian Rift Valley basin provides services including irrigation, drinking water and fish food in the region... -
Evaluation of agribusiness performance in Nigeria
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Chukwuma Otum Ume --- , Germany Anslem Anibueze Enete --- , Nigeria Anthony Nwajesus Onyekuru --- , Patience Ifeyinwa Opata --- , NigeriaIn Nigeria, agribusiness has a major role to play in the transformation of the agricultural sector. Little is known about the key performance indicators relevant to the agribusiness sector. This article employed the latest World Bank Enterprise Survey data to... -
Intra-seasonal activity of ground dwelling spiders following six years of tillage, fertiliser and weeding treatments in an agricultural field in northern Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nilton Mashavakure --- , Zimbabwe Delight Vhembo --- , Zimbabwe Arnold B Mashingaidze --- , Zimbabwe Edson Gandiwa --- , ZimbabweSpiders are important biological control agents whose activity and diversity can be negatively affected by agricultural practices. A study was conducted at Chinhoyi University of Technology experimental farm, northern Zimbabwe, to determine the impact of tillage, fertiliser application and weeding... -
The new soil classification system in South Africa, its history, important changes made and implications for users
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: George van Zijl --- , South Africa Dave Turner --- , South Africa Garry Paterson --- , South Africa Jaco Koch --- , South Africa Johan van Tol --- , South Africa Kurt Barichievy --- , South Africa Cathy Clarke --- , South Africa Martiens du Plessis --- , South Africa Piet van Deventer --- ,The board of the Soil Science Society of South Africa endorsed the “Soil Classification: A Natural and Anthropogenic System for South Africa”, in 2020 making it the official soil classification system to be used in South Africa. This classification system,... -
Strategies of coping with the effects of HIV/AIDS in Chinamhora communal lands, Goromonzi rural district, Zimbabwe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Wilberforce Kurevakwesu --- , ZimbabweThis qualitative study assesses the impacts of HIV/AIDS on rural households in Chinamhora communal lands, explores the coping strategies of these rural households and establishes possible interventions towards improving their coping strategies. The study comes at a time when deaths... -
The wheat curl mite (Aceria tosichella, Prostigmata: Eriophyidae) could establish in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Tamryn S Venter --- , South Africa Mark P Robertson --- , South Africa Davina L Saccaggi --- , South Africa Katelyn T Faulkner --- , South AfricaBiological invasions by agricultural pests can have serious negative impacts, including decreases in crop yield and economic losses. The MT-1 and MT-8 genotypes of the wheat curl mite (Aceria tosichella) (hereafter ‘WCM’ refers to these two genotypes) are globally distributed... -
The use of sustainable agricultural methods amongst smallholder farmers in the Eastern Cape province, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: David Bese --- , South Africa Elliot Zwane --- , South Africa Priviledge Cheteni --- , South AfricaThere is increasing concern over the role that modern agricultural methods play in the degradation and destruction of natural resources such as water, soil, forests, and microorganisms, and the wider environment. Modern agricultural production methods, though they are effective at... -
Moringa oleifira noise: Science or quackery and the way forward
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Margaret Huruma Mollel --- , Republic of South Africa Munyaradzi Mujuru --- , Republic of South Africa Vuyo Mjimba --- , Republic of South Africa Nicolas Darangwa --- , Republic of South Africa Richard Nyanzi --- , Republic of South AfricaThe moringa tree is a rising star in South Africa where it is increasingly playing a variety of social and economic roles, especially among the rural poor. Also known as the horseradish tree, moringa has been referred to as the... -
An exploratory study into the establishment of agricultural innovation platforms to improve agricultural efficiency in Hwedza district, Zimbabwe
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Innocent T. Mahiya --- , South AfricaAfrica has suffered a series of challenges around food insecurities which are partly explained by inefficient agricultural systems. The agricultural innovation platforms have been popularized in Africa and Zimbabwe in particular as part of the answer to the many agricultural... -
Analysis of farmers’ food price volatility and Nigeria’s growth enhancement support scheme
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Joseph I. Uduji --- , Nigeria Elda Nduka Okolo-Obasi --- , Nigeria Simplice Anutechia Asongu --- , CameroonFood prices in Nigeria have become significantly higher and more volatile since 2012. The purpose of this research was to find out what affects farmers’ participation in the growth enhancement support scheme (GESS) in the country. We determined the effect... -
The future of work in Africa in the era of 4IR – The South African perspective
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Marcia Mkansi --- , South Africa Nico Landman --- , South AfricaAlthough the correlation between technology and the changing labor landscape has been the subject of much research, there are growing concerns regarding the rise of automation and its impact on the job market. Research focus has been on jobs that... -
Quality assessment of groundwater in an agricultural belt in eastern Nigeria using a Water Quality Index
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ogechi L Alum --- , Nigeria Chukwuma OB Okoye --- , Nigeria Hillary O Abugu --- , NigeriaThe physico-chemical and microbial analyses of fifteen hand-dug wells (HDWs) and six boreholes (BHs) in the Ezeagu and Uzo-uwani Local Governments Areas (LGAs) of Enugu State in south-eastern Nigeria were conducted to evaluate their water quality for potability. Samples were... -
Species composition and diversity of epiphytic microalgae on Myriophyllum spicatum in the El-Ibrahimia Canal, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Eman Ibrahim Abdel-Aal --- , EgyptThe El-Ibrahimia Canal is one of the main irrigation sources in Egypt, that it supplies perennial irrigation to approximately 600 000 ha (one-fourth of the Egyptian cultivated land). An annual study on species composition of microalgae attached to the submerged... -
Seasonal variation and drivers of zooplankton, macroinvertebrate and littoral fish communities from irrigation ponds in a semi-arid region in the Eastern Cape (South Africa)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Mofu --- , South Africa T Dalu --- , South Africa RJ Wasserman --- , South Africa DJ Woodford --- , South Africa D Khosa --- , South Africa OLF Weyl --- , South AfricaIrrigation ponds are increasingly abundant globally, particularly in water-stressed countries with limited natural surface waters, yet knowledge of their ecology is limited. Here, we assessed zooplankton, macroinvertebrate, and littoral fish communities from irrigation ponds located in the Sundays River Valley... -
Conservation Agriculture farming systems in rainfed annual crop production in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R van Antwerpen --- , South Africa MC Laker --- , South Africa DJ Beukes --- , South Africa JJ Botha --- , South Africa A Collett --- , South Africa M du Plessis --- , South AfricaSouth Africa is, relative to the rest of the world, a water scarce country with a limited amount of arable land, especially land with a long-term sustainable agricultural production potential. Agriculture should therefore focus on the implementation of soil and... -
Weed species diversity and shifts in Conservation Agriculture-based crop rotation systems on the Highveld area of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Elbé Hugo --- , South Africa Maryke Craven --- , South Africa Andries A Nel --- , South AfricaThe occurrence and infestation levels of weed species are known to vary greatly within Conservation Agriculture (CA) systems as weed species will react differently to different habitats. Two on-farm CA trial sites, near Buffelsvallei and Viljoenskroon respectively, were established during... -
Soil C sequestration and CO2 fluxes under maize-based Conservation Agriculture systems in the Eastern Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lindah Muzangwa --- , South Africa Pearson Nyari Stephano Mnkeni --- , Tanzania Cornelius Chiduza --- , South AfricaTraditional farming methods deplete soil carbon and contribute to carbon dioxide (CO2) emissions. We investigated the effects of Conservation Agriculture principles on C sequestration and CO2 flux from two agroecological regions in the Eastern Cape province, South Africa, over five... -
Conservation Agriculture in rainfed annual crop production in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JA Strauss --- , South Africa PA Swanepoel --- , South Africa MC Laker --- , South Africa HJ Smith --- , South AfricaPressures from population growth, changing diets and climate change are driving transformation of our global food production to ensure more efficient, reliable and sustainable production. In South Africa, arable land for crop production and permanent pastures accounts for 10–12% of... -
Soil management for carbon sequestration
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Rattan Lal --- , United StatesAn increase in atmospheric CO2 by ∼146% and global temperature by ∼1 °C since the year ca. 1750 has created an urgency to identify potential sinks for storage of excess CO2. The historic depletion of soil organic carbon (SOC) from... -
A history of Conservation Agriculture in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JA Strauss --- , South Africa PA Swanepoel --- , South Africa H Smith --- , South Africa EH Smit --- , South AfricaConservation Agriculture (CA) is a holistic farming system aimed at the conservation of natural resources by halting soil erosion and increasing biodiversity in cropping systems, while still effecting sustainable production. Conservation agriculture is based on three principles, namely minimum soil... -
Importance of detailed soil surveys for Conservation Agriculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JL Schoeman --- , E Verster --- , HB Booyens --- , MJ du Plessis --- ,This paper explores the role that detailed soil surveys can play in Conservation Agriculture (CA). While it is widely acknowledged that CA practices have to be adapted to local conditions, it appears as if in-field physical soil and hydrological properties,... -
Growth and yield of African ginger in response to application of organic fertiliser
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Phomolo Maphothoma --- , Riana Kleynhans --- , Gerhard Prinsloo --- , Salmina N Mokgehle --- , Ian du Plooy --- , Hintsa T Araya --- ,African ginger (Siphonochilus aethiopicus) is in high demand for medicinal use. The plant does not multiply after being harvested, as it is destroyed in the process. The species is now facing extinction as a result of over harvesting. In order... -
Self-esteem and interpersonal difficulties of college students: Influences of self-control and self-concept
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Luo Yanhong --- , China Shi Zhenrong --- , China Zhong Yiping --- , ChinaThis study examined the relationship between self-esteem and interpersonal difficulties of college students and the role of self-concept in that relationship. A secondary goal of the study was to examine the self-control effect on this relationship, via self-concept. College students... -
Agricultural advisory and extension service approaches and inclusion in reaching out to Kenyan rural farmers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ann N. Kingiri --- , KenyaEfficient agricultural advisory and extension service (AES) is poised to lead to improved agricultural productivity as farmers utilize information and knowledge to optimize their use of limited resources. However, the role of AES has progressively evolved due to the changing... -
Decolonising and Africanising the Spanish studies curriculum under emergency online teaching: introducing Equatorial Guinean literature in South African higher education
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Nereida Ripero-Muñiz --- , South Africa Thato Senabe --- , South Africa Musa Maseko --- , South Africa Yolanda Reigadas --- , South AfricaThis is a reflective piece that explores the process of creating and implementing a new course at the University of the Witwatersrand on the literature of Equatorial Guinea under emergency online teaching that took place in 2020 due to the... -
Response of soil carbon fractions in a Haplic Cambisol to crop rotation systems and residue management practices under no tillage in the Eastern Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: I Gura --- , South Africa PNS Mnkeni --- , South Africa CC du Preez --- , South Africa JH Barnard --- , South AfricaSoil organic carbon (SOC) is a major indicator of soil quality and/or health but its slow short-term response to management changes has prompted the search for more sensitive indicators for monitoring short-term changes in soil organic matter (SOM). This study... -
Tillage, crop rotation, residue management and biochar influence on soil chemical and biological properties
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Patrick Nyambo --- , South Africa B Thengeni --- , South Africa Cornelius Chiduza --- , South Africa Tesfay Araya --- , South AfricaSoil and crop productivity cannot be maintained unless declining soil fertility is replenished. A three-year factorial experiment using a split-split-plot design, replicated three times, was used to evaluate the response of pH, electrical conductivity, exchangeable cations (Ca, Mg, K and... -
Access to credit and agricultural sector performance in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Romanus Osabohien --- , Nigeria Anita Mordi --- , Nigeria Adeyemi Ogundipe --- , NigeriaThis study examined how agricultural sector performance will be enhanced in Nigeria through access to credit. The study engaged a time series data sourced from the Central Bank of Nigeria (CBN) statistical bulletin and the World Development Indicators (WDI) of... -
Households’ nonfarm livelihood participation and agricultural inputs investment: Evidence from northern Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Haile Tewele Berhe --- , EthiopiaEvidence shows that nonfarm livelihood activities are an important source of income for rural households and they may interact with farm activities in different ways. This article attempts to examine the investment linkage in which evidence is scarce in the... -
Rural infrastructure and production efficiency of food crop farmers: Implication for rural development in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abeeb Babatunde Omotoso --- , Nigeria Saidat Adebola Daud --- , Nigeria Luke Okojie --- , Nigeria Abiodun Olusola Omotayo --- , South AfricaThis study investigated the impact of rural infrastructure on production efficiency of food crop rural farmers in Ogun State, Nigeria. A total of 160 farming households from 20 communities in Abeokuta and Ilaro in Ogun State Agricultural Development Programme (OGADEP)... -
Adoption and perceptions of biogas: Empirical evidence from rural households of Melani village in Raymond Mhlaba municipality
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lindiwe Ngcobo --- , South Africa Ajuruchukwu Obi --- , South Africa Sampson Mamphweli --- , South Africa Siphe Zantsi --- , South AfricaRenewable energies, which include biogas, have been identified as a possible panacea for the energy challenges faced by the poor and can potentially ensure that they obtain cheaper energy that is more accessible and environmentally sustainable. However, its adoption and... -
Assessing mobile phone use in farming: The case of Nigerian rural farmers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Chioma Anadozie --- , Nigeria Mathias Fonkam --- , Nigeria Jean-Paul Cleron --- , NigeriaMost existing literature in the field of mobile phones for agriculture and rural development adopted an economic stance that focused mainly on agriculture marketing and pricing. Little attention has been given to other areas of the farming value chain. To... -
Smallholder farmers’ adaptation strategies to mitigate the effect of drought on maize production in OR Tambo District municipality
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Brian Muroyiwa --- , Lesotho Nasiphi Masinda --- , South Africa Abyssinia Mushunje --- , South AfricaThere is evidence that climate variability has affected agriculture and the expectation is that the situation will get worse over time. This study examined smallholder farmers’ adaptation strategies to mitigate the effects of drought on maize production in OR Tambo... -
Social protection intervention and agricultural participation in West Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Romanus Osabohien --- , Nigeria Isaiah Olurinola --- , Nigeria Oluwatoyin Matthew --- , Nigeria Daniel E. Ufua --- , NigeriaThis study contributes towards the achievement of the United Nations (UN) 2030 Sustainable Development Goal (SDG) 1.3 which is to ‘implement appropriate social protection for all to mitigate risk and vulnerability’ by examining how social protection interventions contribute to agricultural... -
The financial and social efficiency of rural cooperatives in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Collin L. Yobe --- , South Africa Stuart R. D. Ferrer --- , South Africa Maxwell Mudhara --- , South AfricaIdentifying the type of organization for achieving social efficiency for agricultural development remains a challenge. In this study, the relationship between the financial and social efficiency of South African agricultural cooperatives was examined. Data, comprising 1788 agricultural cooperatives, were obtained... -
Technology and innovation trajectories in the Rwandan Agriculture sector: Are value chains an option?
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Parfait Yongabo --- , SwedenTechnology and innovation are important in addressing complex problems in the agricultural sector in many developing communities. However, ways and mechanisms to integrate them in the agricultural sector are still a challenge due to the lack of clear pathways and... -
Blockchain for agricultural sector: The case of South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Roberto Mavilia --- , Italy Roberta Pisani --- , ItalyNew technologies are playing a fundamental role in the postmodern era of globalization where interpersonal interactions at the international level and the exchange of goods, services, information and capital are the basis of all activities. The agriculture sector is constantly... -
The effects of eucalyptus Eucalyptus globulus and oregano Origanum vulgare essential oils on anaesthesia response in a Namibian marine species, silver kob Argyrosomus inodorus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NN Gabriel --- , Namibia C Chikwililwa --- , Namibia GM Liswaniso --- , Namibia S Louw --- , Namibia A Namwoonde --- , NamibiaThe anaesthetic effectiveness of separate and combined eucalyptus Eucalyptus globulus and oregano Origanum vulgare essential oils (EO) were investigated in silver kob Argyrosomus inodorus and were compared with clove oil Eugenia caryophyllata. Argyrosomus inodorus adults (595.61 [SE 11.82] g) were... -
Abundance and distribution of plant-parasitic nematodes in tomatoes grown in a semi-arid agro-ecological zone in Tanzania
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Liberatus D Lyimo --- , Tanzania Jackline A Bakengesa --- , Tanzania Janeth D Mbuma --- , TanzaniaThe abundance and distribution of plant-parasitic nematodes (PPN) on tomato plants grown in nine villages in the semi-arid zones of Singida and Dodoma in Tanzania were assessed in December 2020. Samples from soil and plant roots were evaluated for abundance,... -
Effect of biochar, farmyard manure, and lime on soil properties, and on growth and nutrient uptake of wheat on acidic soils in Southern Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mekedes Lulu --- , Ethiopia Bekele Lemma --- , Ethiopia Legesse Hidoto --- , Ethiopia Asmare Melese --- , EthiopiaThis study assessed the effect of the interactions of biochar (BC), farmyard manure (FYM) and lime on soil chemical properties, and on different wheat attributes in Southern Ethiopia. The experimental design was a randomised complete block in three replications. The... -
Factors enhancing agricultural productivity under innovation technology: Insights from Cameroon
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Francis Andrianarison --- United Nations Development Programme (UNDP), Cameroon Cyrille Bergaly Kamdem --- University of Yaounde II Soa, Cameroon Blaise Che Kameni --- University of Yaounde II Soa, CameroonThis paper analyzes the impact of innovation adoption, namely, improved seeds or modern equipment and examines the effects of farmer education, access to credit, and land tenure security on agricultural productivity in Cameroon. We take advantage of a nationally representative... -
Spatial and diurnal distribution of carbon monoxide (CO) and its health and environmental implications in selected locations in the Niger Delta Area of Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Iwekumo Ebibofe Agbozu --- Federal University of Petroleum Resources Effurun, Nigeria Osayomwanbor Ebenezer Oghama --- Federal University of Petroleum Resources Effurun, NigeriaEmission of carbon monoxide (CO) poses unprecedented risks in urban environments. Moreover, there has been a growing concern about the incidences of deaths arising from suffocation by CO fumes in Nigeria. Hence, this study attempts to evaluate the spatial and... -
Do government agricultural policies affect production and export of cocoa in Ghana?
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Hadrat Yusif --- , Ghana Emmanuel Nii Oseku Ntreh --- , Ghana Daniel Sakyi --- , Ghana Samuel Tawiah Baidoo --- , GhanaThe contributions of the agricultural sector to economic growth of developing countries of which Ghana is no exception cannot be overemphasized. Despite the sector being the mainstay of the Ghanaian economy, it is still confronted with several challenges. As a... -
Effects of form, fineness and placement of lime with and without soil tillage on barley and canola growth and development
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JR van der Nest --- , South Africa AG Hardie --- , South Africa J Labuschagne --- , South Africa PA Swanepoel --- , South AfricaNo-tillage systems and slow movement of surface-applied limestone can lead to stratification of soil acidity. Incorporation of lime by tilling soil is not preferred by producers following conservation agriculture practices. There is limited research on ways to facilitate lime movement... -
Ghana’s pineapple innovation history: An account from stakeholders in Nsawam Adoagyiri Municipal Assembly
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Daniel Adu Ankrah --- School of Agriculture, University of Ghana, GhanaDespite the pineapple fruit contributing significantly towards Ghana’s non-traditional export, the empirical space deficiently accounts for innovations within the sector. This article addresses prime questions that beg answering such as: the origin of innovations, when, how, what conditions facilitate adoption... -
Food security in HIV/AIDS response: Insights from Homa Bay, Kenya
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Dipankar Datta --- Concern Worldwide, India James Njuguna --- Concern Worldwide, KenyaThis paper examines the viability and effectiveness of a pilot farming initiative in reversing impacts of HIV/AIDS on the most affected households in Homa Bay, Kenya. The paper argues that once patients are stable, they can effectively be engaged in... -
Difficulties facing healthcare workers in the era of AIDS treatment in Lesotho
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Masebeo Veronica Koto --- , South Africa Pranitha Maharaj --- , South AfricaSub-Saharan Africa is most affected by the AIDS pandemic and Lesotho is no exception. In many countries, healthcare workers are at the forefront of the fight against AIDS. This study explores the difficulties facing healthcare workers in Lesotho using a... -
Exploring the views of academic staff on HIV/AIDS integration into the curricula: a case study of the University of Fort Hare
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Zukiswa Theodorah Dasheka --- University of Fort Hare, South Africa Nomzamo Dube --- University of Fort Hare, South Africa Lulekwa Baleni --- University of Fort Hare, South Africa Eunice Seekoe --- University of Fort Hare, South Africa Actor Katurura --- University of Fort Hare, South Africa Nombulelo Lubisi --- University of Fort Hare, South Africa Daniel Ter Goon --- University of Fort Hare, South AfricaAs a clarion call by Higher Education HIV/AIDS programme (HEAIDS) to South African universities, entrenching, integration and infusing the teaching and learning of HIV/AIDS in the curriculum of universities prove to be a sustainable solution to changing risky behaviour and... -
Chameleons and vineyards in the Western Cape of South Africa: Is automated grape harvesting a threat to the Cape Dwarf Chameleon (Bradypodion pumilum)?
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: KrystalA. Tolley --- South African National Biodiversity Institute, South Africa G. John Measey --- University of the Western Cape, South AfricaThe use of automated grape harvesters in the Cape Wine Growing region has resulted in controversy regarding their effect on the chameleon Bradypodion pumilum. We investigated densities of B. pumilum during harvesting at a vineyard near Stellenbosch, South Africa. During... -
Herpetofaunal utilisation of riparian buffer zones in an agricultural landscape near Mtunzini, South Africa
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Bryan Maritz --- University of the Witwatersrand, South Africa GrahamJ. Alexander --- University of the Witwatersrand, South AfricaWe measured herpetofaunal species richness and abundance in riparian and non‐riparian habitats of an agriculture‐dominated landscape to compare herpetofaunal utilisation of these two habitat types. Riparian areas hosted higher mean species richness and abundance than non‐riparian areas. Riparian and non‐riparian... -
Phylogeny and phylogeography of the Malagasy leaf-tailed geckos in the Uroplatus ebenaui group
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Fanomezana Mihaja Ratsoavina --- Zoological Institute, Technical University of Braunschweig, Germany Miguel Vences --- Zoological Institute, Technical University of Braunschweig, Germany EdwardE. Louis --- Omaha's Henry Doorly Zoo and Aquarium, USALeaf-tailed geckos, genus Uroplatus, are one of the most prominent endemic reptile groups from Madagascar, but the species diversity and diversification of this taxonomic group are not completely understood. Here, we present a phylogenetic reconstruction of the small-sized Uroplatus which... -
A balanced perspective on the contribution of extensive ruminant production to greenhouse gas emissions in southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Michiel M Scholtz --- , South Africa Frans J Jordaan --- , South Africa N Thuli Chabalala --- , South Africa Georgette M Pyoos --- , South Africa M Joel Mamabolo --- , South Africa Frederick WC Neser --- University of the Free State, South AfricaThere is a general perception that ruminants produce large quantities of greenhouse gases (GHG) which contribute to global warming. Ruminant production is also known as the world’s largest user of land, and southern Africa is no exception. Recent estimates indicate... -
Towards a conceptual framework for measuring innovation in the agricultural sector in sub-Saharan developing countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yasser Buchana --- Human Science Research Council, South Africa Moses M. Sithole --- Human Science Research Council, South AfricaDespite the importance and benefits of measuring innovation in businesses, standard methods for innovation measurement, such as the Oslo Manual, largely exclude the agricultural sector. As a result, innovation scholars in developing countries struggle to develop knowledge to understand innovation... -
The effect of crop rotation and tillage practice on residue decomposition and wheat performance in the Western Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johannes Stephanus Theron --- Stellenbosch University, South Africa Gerhardus Johannes van Coller --- , South Africa Lindy Joy Rose --- Stellenbosch University, South Africa Johan Labuschagne --- Stellenbosch University, South Africa Pieter Andreas Swanepoel --- Stellenbosch University, South AfricaConservation agriculture relies on residue retention, crop rotation and reduced tillage. Crop rotation determines residue type, while tillage affects residue load and distribution. Although crop residue retention is often beneficial, residues can create challenges, including obstruction of planters during establishment... -
Tropical wood species: alternative model to determine the characteristic compressive strength perpendicular to grain
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Arthur Filipe Freire Gomes --- Federal University of São Carlos (UFSCar), Brazil Fernando Júnior Resende Macarenhas --- Rua Luís Reis Santos - Pólo II, University of Coimbra, Portugal Diego Henrique de Almeida --- Federal University of São Carlos (UFSCar), Brazil Alfredo Manuel Pereira Geraldes Dias --- Rua Luís Reis Santos - Pólo II, University of Coimbra, Portugal Tulio Hallak Panzera --- Federal University of São João Del Rey (UFSJ), Brazil Francisco Antônio Rocco Lahr --- University of São Paulo (USP), Brazil André Luis Christoforo --- Federal University of São Carlos (UFSCar), BrazilBrazil has a vast area of native forests with the potential to be sustainably exploited for application in civil construction. Density is a key factor when analysing the characteristics of different wood species and their future uses, and additionally it... -
Precision agriculture and the prospects of space strategy for food security in Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lere Amusan --- North West University, South Africa Samuel Oyewole --- North West University, South AfricaPrecision agriculture generally refers to the methods of crop, livestock and fish farming that are meant to eliminate or minimize uncertainty and maximize products with relative accuracy that matches predetermined expectations. Amidst these, the relevance of space assets such as... -
Nutritional support practices at an intensive care unit in Johannesburg, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Abdullah E Laher --- University of the Witwatersrand, South Africa Jared McDowall --- University of the Witwatersrand, South Africa Mikayla van Welie --- University of the Witwatersrand, South Africa Domenic M Malinga --- University of the Witwatersrand, South Africa Alistair J Craythorne --- University of the Witwatersrand, South Africa Brandon J van Aardt --- University of the Witwatersrand, South Africa Tasneem Dalvie --- University of the Witwatersrand, South Africa Guy A Richards --- University of the Witwatersrand, South Africa -
Explicating the adoption of an innovation Fintech Value Chain Financing from Aarti (Middlemen) perspective in Pakistan
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sayeda Zeenat Maryam --- University of the Punjab, Pakistan Ashfaq Ahmed --- University of the Punjab, Pakistan Syed Waqar Haider --- Govt. College for Women University, Pakistan Tasneem Akhter --- University of Central Punjab, PakistanIn the wake of the 2008 global financial crisis, the Fintech industry and Islamic banking were striving to fill the existing void through innovation and different business approaches. Losing trust in conventional banking, advancement of technology and internet globally, and... -
Do farmer-actor interactions in the agricultural innovation system drive technological innovation adoption in Ghana?
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Justina Adwoa Onumah --- CSIR-Science and Technology Policy Research Institute, Ghana Felix Ankomah Asante --- University of Ghana, Ghana Robert Darko Osei --- University of Ghana, Ghana Peter Asare-Nuamah --- University of Environment and Sustainable Development, GhanaThe low level of technological innovation adoption among farmers has been a development concern. However, not much attention has been paid to how agricultural innovation system actors contribute to the adoption of technological innovations among farmers. This paper, therefore, analyzed... -
DNA barcoding of five economically important freshwater fish species from the Nile River, Sudan
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Asma Mahmoud Hamza --- University of Kassala, Sudan Amna Taj Elsir Mahjoub Mohammed --- University of Kassala, SudanThe study was conducted to barcode five freshwater fish species obtained from Nile River tributaries (the Atbara River and the Blue Nile), in March 2019, using analysis of partial CO1 gene sequences. Fish samples were identified morphologically as Nile perch... -
Rainfed-based production of Megathyrsus maximus in sub-Saharan Africa: the case of the semi-arid environment of Sudan
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hussein I Mohamed --- , Sudan Shamseddin M Ahmed --- Water Management and Irrigation Institute, University of Gezira, Sudan Adil D Mohamed --- Water Management and Irrigation Institute, University of Gezira, SudanThe performance of rainfed-based Megathyrsus maximus (syn. Urochloa maxima and Panicum maximum) was investigated in the semi-arid pastures of Sudan. Split-plot complete design experiments with three replications were applied for two consecutive seasons (2020–2021). The treatments were two in situ... -
Do native grasses emerge and establish in areas rehabilitated using vetiver grass?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lindokuhle X Dlamini --- University of KwaZulu-Natal, South Africa Michelle J Tedder --- University of KwaZulu-Natal, South Africa Kevin P Kirkman --- University of KwaZulu-Natal, South AfricaSpecies-rich grasslands provide important ecosystem services, and in South Africa, approximately 40% of these grasslands are degraded. Vetiver grass (from India) is often used during rehabilitation efforts to restore soil function without a thorough understanding of the potential negative ecological... -
4th Industrial Revolution skills in the current South African accountancy curricula: A systematic literature review
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Estelle Landsberg --- , South Africa Liandi van den Berg --- , South AfricaThe business environment has seen rapid changes due to the Fourth Industrial Revolution (4IR) and the influence of exponential technological advancements. The enhancement of technology-based work environments has changed the skill set needed by graduates entering the workforce. In this... -
Determinants of smallholder livestock farmers’ adoption decisions of improved fodder technologies in Insiza District
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Trymore Nhundu --- , Zimbabwe Edward Mutandwa --- , Zimbabwe Jayne Stark --- Resilience Knowledge Hub, Mercy Corps, Zimbabwe Tafireyi Chamboko --- , Zimbabwe Arthur Tinashe Vambe --- , ZimbabweThe study investigated the factors that influence the extent of the use of fodder technologies in the Insiza District of Zimbabwe, as well as the reasons for their low adoption and the lower participation of women than men in fodder... -
Knowledge, awareness, and perception of senior high school learners towards nuclear energy: A South African case study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Daniel Raphael Ejike Ewim --- Durban University of Technology, South Africa Yasthil Nundlal --- Durban University of Technology, South Africa Keenan Govender --- Durban University of Technology, South Africa Nokubonga Lungile Nzuke --- Durban University of Technology, South Africa Mfanafuthi Vukani Mbatha --- Durban University of Technology, South Africa Nangamso Gwexa --- Durban University of Technology, South Africa Kelsi Naidoo --- Durban University of Technology, South Africa Opeyeolu T. Laseinde --- University of Johannesburg, South Africa Sogo Mayokun Abolarin --- University of the Free State, South AfricaThis study investigated senior South African high school students’ levels of knowledge, perception, attitude, and awareness toward nuclear energy using paper-based, semi-structured questionnaires and digital data collection instruments through online Google forms. The sample consisted of 100 high school students... -
Consolidation of human factors limiting the success and sustainability of e-Agriculture projects in sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ezra Misaki --- , TanzaniaHuman factors affecting e-Agriculture should be identified and understood to ensure the success and sustainability of e-Agriculture projects. However, specific human factors influencing e-Agriculture in sub-Saharan Africa have never been consolidated. In this regard, the current study reviewed diverse literature... -
Agricultural credit guarantee scheme fund and oil palm production in Nigeria: A vector autoregressive (VAR) approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Elaigwu Christopher Ogbanje --- Nasarawa State University, Nigeria Eberechukwu Johnpaul Ihemezie --- University of Nigeria, NigeriaOil palm has been identified as one of the key agricultural products that can diversify Nigeria’s economy. However, its production and export have been hampered by capital constraints. Consequently, the Agricultural Credit Guarantee Scheme Fund (ACGSF) was introduced to encourage... -
The effect of crop rotation on soil health in the north-western Free State region, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Melanie de Bruyn --- University of the Free State, South Africa Andre Nel --- University of the Free State, South Africa Johan van Niekerk --- Independent research agronomist,Soil health is an important aspect of sustainable agriculture. By maintaining soil health, crop yields can be consistently successful without negatively affecting the environment. The objective of this study was to evaluate the effects that different cropping systems have on... -
Perceived effects of COVID-19 on smallholder farmers’ agricultural production practices in Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Asrat Mulat Asegie --- Wollo University, Ethiopia Samuel Tadesse Adisalem --- Wollo University, Ethiopia Amogne Asfaw Eshetu --- Wollo University, EthiopiaThis study analyzed the perceived effects of COVID-19 on smallholder farmers’ agricultural production practices in the South Wollo and Oromo Administrative Zones of Ethiopia. Data were collected from 270 randomly selected respondents from September 5 to October 10, 2020. Data... -
The impact of Eucalyptus plantations on herpetofaunal diversity, Maputo National Park, Mozambique
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: PR Jordaan --- Tshwane University of Technology, South Africa A Wilken --- University of Pretoria, South Africa X Combrink --- Tshwane University of Technology, South AfricaExotic afforestation has proven detrimental to biodiversity in general, however only a few studies documenting the impact of timber plantations on herpetofaunal diversity have been published within a southern African context. To determine if variations in herpetofaunal species assemblages could... -
Lucerne establishment in dryland conditions: effects of crop residues and wheat as a nurse crop
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Stephan le Roux --- Stellenbosch University, South Africa Pieter A Swanepoel --- Stellenbosch University, South AfricaEstablishing lucerne (Medicago sativa) in dryland conditions poses challenges due to unpredictable rainy seasons and seedling vulnerability. A potential solution is adopting a nurse crop during the first year in the same field. This study aimed to assess the impact... -
Muscle ultrasound: a reliable bedside tool for dietitians to monitor muscle mass
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Lizl Veldsman --- Stellenbosch University, South Africa Alison Lupton-Smith --- Stellenbosch University, South Africa Guy A Richards --- University of the Witwatersrand, South Africa Renée Blaauw --- Stellenbosch University, South Africa -
Experiences of participants in an agricultural livelihood support initiative for people living with HIV in central Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Christopher Tumwine --- School of Medicine, Kabale University, Uganda Isaac Yeboah Addo --- University of New South Wales, Australia Henry Zakumumpa --- Makerere University, Uganda Janet Seeley --- , UK Lazarus Oucul --- , UgandaThis study aimed at assessing the experiences of people living with HIV who participated in an agricultural livelihood support initiative in selected districts of Uganda. The initiative, implemented from 2017 to 2018, involved the provision of agricultural inputs such as... -
Impact of agricultural land-use on functional feeding groups of Afrotropical Ephemeroptera, Plecoptera and Trichoptera in the Kat River, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Frank Chukwuzuoke Akamagwuna --- Rhodes University, South Africa Oghenekaro Nelson Odume --- Institute for Water Research, Rhodes University, South Africa Nicole Bertine Richoux --- Rhodes University, South AfricaDespite Africa experiencing a substantial rise in inadequately managed agricultural practices, studies examining the effects of these activities on the functional organisation of macroinvertebrates in tropical streams are underdeveloped. The responses of Ephemeroptera, Plecoptera and Trichoptera (EPTs) functional feeding groups... -
Measuring culturable microbial populations and filamentous microbial growth in soil of wheat plots subjected to crop rotation and monoculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Marais --- Institute for Plant Production, Department of Agriculture: Western Cape, Elsenburg, Private Bag X1, South Africa M.B. Hardy --- Institute for Plant Production, Department of Agriculture: Western Cape, Elsenburg, Private Bag X1, South Africa C.D. Morris --- Agricultural Research Council - Range & Forage, c/o Grassland Science, University of KwaZulu-Natal, Private Bag X01, South Africa A. Botha --- Department of Microbiology, Stellenbosch University, Private Bag X1, South AfricaCrop management practices, including the addition of fertilisers, often lead to different microbial communities in agricultural soils. Soil dilution plates were used to enumerate yeasts, basidiomycetous fungi, general heterotrophic microbes, as well as actinomycetes in soils sampled at three times... -
Occurrence of aflatoxins and aflatoxin-producing Aspergillus spp. associated with groundnut production in subsistence farming systems in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Ncube --- Agricultural Research Council-Grain Crops Institute, Private Bag X1251, South Africa B.C. Flett --- Agricultural Research Council-Grain Crops Institute, Private Bag X1251, South Africa C. Waalwijk --- Plant Research International B.V., Netherlands A. Viljoen --- Department of Plant Pathology, University of Stellenbosch, South AfricaAflatoxins are carcinogenic mycotoxins produced by Aspergillus spp. in groundnut kernels. Forty-six groundnut samples were collected from subsistence farmers in three provinces of South Africa, namely KwaZulu-Natal (KZN), Mpumalanga (MP) and Limpopo (LP), in 2006 and 2007. Aflatoxin levels of... -
A survey and exposition of sub-Hausdorff separation axioms
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jeffrey T. Denniston --- Kent State University, USA Austin Melton --- Kent State University, USA Stephen E. Rodabaugh --- Institute for Applied Topology and Topological Structures, Youngstown State University, USA Jamal K. Tartir --- Institute for Applied Topology and Topological Structures, Youngstown State University, USAThis paper surveys and develops sub-Hausdorff axioms. It augments known relationships involving T 0 (Kolmogorov), S 0 (quasi-sobriety), S 1 (sobriety), T 1 (Fréchet), and T 2 (Hausdorff ) by examining a large suite of sub-Hausdorff axioms. Emphasis is given... -
Rethinking radical veld improvement: a sustainable approach to grazing land restoration?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KP Kirkman --- University of KwaZulu-Natal, South AfricaRadical veld improvement (RVI), a concept explored in southern Africa during the mid to late 1900s, aimed to intensify agricultural landscapes by enhancing veld productivity by incorporating productive forage grasses or legumes, soil nutrient enrichment, or a combination of both... -
Integration of livestock into conservation agriculture systems in the Mediterranean climate region of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Pieter A Swanepoel --- Stellenbosch University, South Africa Hendrik PJ Smit --- Stellenbosch University, South AfricaWithin the Mediterranean climate region of South Africa, the livestock sector constitutes a substantial contributor to the regional economy. Livestock integration is prevalent in conservation agriculture systems in this region. Crop rotation involving small grains and canola is combined with... -
Adapting to climate change amidst innovation diffusion and declining indigenous agricultural knowledge and practices in Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Pius Siakwah --- University of Ghana, Ghana Austin Dziwornu Ablo --- University of Ghana, Ghana Rosina Sheburah-Essien --- University of Ghana, Ghana Mariama Zaami --- University of Ghana, Ghana Joseph Awetori Yaro --- University of Ghana, GhanaThis paper examines how farmers adapt to climate change through innovation diffusion amidst declining indigenous agricultural knowledge and practices in Ghana. Small-scale farmers rely on indigenous practices and technological diffusion to cope with change even where the adoption levels of... -
Genotype × environment interaction analysis for grain yield of bread-wheat genotypes under drought-prone environments
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Yared Semahegn --- African Centre for Crop Improvement, University of KwaZulu-Natal, South Africa Hussein Shimelis --- African Centre for Crop Improvement, University of KwaZulu-Natal, South AfricaThe analysis of genotype × environment interaction (GEI) is crucial for distinguishing the performance of genotypes across different environments. The aim of this study was to investigate the GEI for grain yield in bread wheat and to establish selection criteria to enhance... -
Effects of eucalypt and black wattle biochars from vacuum pyrolysis on sandy soil quality and cauliflower yield
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S Mncedi --- Stellenbosch University, South Africa JF Görgens --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa AG Hardie --- Stellenbosch University, South AfricaWoody invasive alien plants (IAPs), including black wattle (Acacia mearnsii De Wild.) and eucalypt species (Eucalyptus camaldulensis Dehnh.), present significant environmental challenges in South Africa. Biochar from these plants can enhance soil carbon sequestration and fertility. This study examines the... -
Predation of free-range chickens by invasive House Crows Corvus splendens in Dodoma, Tanzania
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kelvin Ngongolo --- University of Dodoma, Tanzania Naza Mmbaga --- University of Dodoma, Tanzania Doreen Mrimi --- University of Dodoma, TanzaniaThis study reports on the perspectives of local farmers on predation on chickens by the invasive House Crow Corvus splendens, together with their coping strategies, in Dodoma, Tanzania. A survey was conducted among 391 farmers of free-range chickens in urban... -
Type 2 diabetes mellitus but not overweight/obesity reduces testicular volume and endocrine function in men
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: E Musa --- Kaduna State University, Nigeria GC Musa --- University of Cape Town, South Africa E Salazar-Petres --- Universidad San Sebastián, Carrera de Obstetricia, Chile F Bello --- Ahmadu Bello University, Nigeria AG Bakari --- Ahmadu Bello University, Nigeria -
Influence of actors’ interactions under agricultural innovation system lens on the adoption of rice innovations in Mvomero district and Ifakara Town council
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sospeter Jibunge Charles --- University of Dar es Salaam, TanzaniaThis study addresses the gap in empirical evidence on how and to what extent interactions among numerous actors within the Agricultural Innovation System (AIS) can influence smallholder farmers’ adoption of rice innovations. The study employed a mixed-methods embedded design to... -
Adoption of precision agriculture practices in South African field crop production systems: a national survey
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: KJ Truter --- Stellenbosch University, South Africa H Glas --- Bureau for Food and Agricultural Policy (BFAP), South Africa M Delport --- Stellenbosch University, South Africa FH Meyer --- Bureau for Food and Agricultural Policy (BFAP), South Africa PA Swanepoel --- Stellenbosch University, South AfricaThe implementation of precision agriculture practices can enhance agricultural productivity, sustainability, and on-farm profitability. Nonetheless, adoption rates vary widely across regions and farming operations, particularly in South Africa’s diverse agricultural landscape. This study builds on prior regional analyses by providing... -
The role of academic institutions in leveraging innovation through patenting activities: A diagnostic of the Moroccan experience focusing on the agricultural sector
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sanaa Zebakh --- Ibn Tofail University, Morocco Jaouad Anissi --- EUORMED Research Centre EI-BIOMEDTECH, EUROMED University of Fes, Morocco, Salim Bounou --- EUORMED Research Centre EI-BIOMEDTECH, EUROMED University of Fes, Morocco, Mohammed Sadiki --- Rabat-Instituts, MoroccoIn the late 2000s, Morocco implemented various actions and programmes to establish a National Innovation System, which has helped to bolster innovation and patenting activities within higher education and research institutions. This article investigates the Moroccan innovation framework that facilitated... -
The agriculture productivity puzzle: Capital deepening and agricultural productivity in China
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shigui Du --- Universiti Malaya, Malaysia Angathevar Baskaran --- Universiti Malaya, Malaysia V. G. R. Chandran --- Universiti Malaya, MalaysiaThis study investigates how capital deepening influences agricultural productivity among peasant households in China, considering heterogeneity across household types and regions. Using data from the China Family Panel Survey, we find that land size is negatively associated with land productivity... -
Determinants of adoption and intensity of mechanization in Ethiopia: Evidence from Arsi Zone
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Gizachew Mengesha Abebe --- Bahir Dar University, Ethiopia Wondaferahu Mulugeta Demissie --- Ethiopian Civil Service University (ECSU), Ethiopia Markose Chekol Zewdie --- Bahir Dar University, EthiopiaMechanization has been recognized as a key thematic area by the Ethiopian Agricultural Research Institute for the period 2018–2030; however, research on its adoption determinants remains limited. This study examines the factors influencing the adoption and intensity of mechanization, focusing... -
Assessment of compliance level with the International Labor Organization child labour utilization regulation: Evidence from cassava farmers in Osogbo ADP Zone, Osun State, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lateef Olatunbosun Jimoh --- Osun State University, Nigeria Timothy Olusola Agboola --- Osun State University, Nigeria Olaide Kamila Akintunde --- Osun State University, Nigeria Kaothar Modupe Idris-Adeniyi --- Osun State University, Nigeria Francis Oluwadamilare Ajayi --- Osun State University, Nigeria Festus Adelekan Oyeniyi --- Osun State University, NigeriaInvestigating the compliance level of International Labor Organization (ILO) regulation on child labour use among cassava farming households in Osogbo ADP Zone, Osun State, Nigeria, the study determines the factors influencing child labour usage among cassava farmers in the study... -
Determinants of modern agricultural technology adoption: Evidence from Western Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tamiru Chalchisa Geleto --- Jimma University, Ethiopia Seid Sani --- Wolkitie University, Ethiopia Obsu Hirko Diriba --- Jimma University, EthiopiaThis study explores the factors influencing agricultural technology adoption among settlers and native farmers in selected districts of Benishangul Gumuz regional state, Ethiopia. A multistage sampling procedure was employed to gather data from 380 randomly chosen participants. The major data... -
Three decades of research on olive mill waste: A patent citation analysis
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ridha Mhamdi --- Centre of Biotechnology of Borj-Cedria, TunisiaThis paper investigates the technological impact of research on olive mill wastes (OMW) by analyzing patent citations. Using a dataset of 2448 publications from Scopus, we identified 151 papers cited by patents. The results show a moderate correlation between academic... -
A Portuguese urban vegetable garden under the gaze of hospitality
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Cynthia Luderer --- Social Sciences Institute, University of Minho, PortugalThis work concerns an urban vegetable garden in the north-west of Portugal and aims to describe the hospitality surrounding this environment. This study resulted from a two-year field investigation, which was methodologically driven by ethnography and supported by the anthropology... -
Palearctic White Storks Ciconia ciconia in the Western Cape, South Africa, in the 20th century
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Les G Underhill --- University of Cape Town, South AfricaAt the start of the 20th century, the southern limit of the nonbreeding range of the White Stork Ciconia ciconia, a migrant from the Palearctic, was considered to be at the Orange River; they moved around opportunistically in this area... -
Silvicultural management strategies for climate change mitigation with the focus on plantation forests
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ben du Toit --- Stellenbosch University, South AfricaThis technical note explores several practical actions whereby short-rotation plantation forests in warm climates can be managed for increased resilience in the face of climate change. It includes landscape level issues such as ecosystem resilience, limiting the invasive tendencies of... -
Comparison of three methods to assess pre-harvest sprouting in wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: SI Hull --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa WC Botes --- Stellenbosch University, South Africa C Mutengwa --- University of Fort Hare, South AfricaPre-harvest sprouting (PHS) in wheat (Triticum aestivum L.) is an increasing concern, as climate variability alters rainfall patterns and air temperatures during harvest, intensifying risk in many cereal-producing regions. The untimely germination of the grain, PHS, is caused by germination... -
An estimation of liquidity effects of market microstructure changes in the Indian agricultural commodity market
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Sreekha Pullaykkodi --- Manipal School of Commerce and Economics, Manipal Academy of Higher Education, IndiaThe effects of market microstructure change on the liquidity of the Indian agricultural commodity market are examined using 18 years of data by dividing it into different sub-samples. The study examines variations in market liquidity by conducting a year-wise analysis,... -
Model and measure: comparing soil organic carbon stocks quantification approaches at field scale in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Willie Herman Cloete --- North-West University, South Africa Gerhard du Preez --- North-West University, South Africa George Munnik van Zijl --- North-West University, South AfricaThere is an ongoing debate about the most appropriate approach for quantifying changes in soil organic carbon stocks (SOCS). The aim of the study was to evaluate the performance of the Rothamsted carbon (RothC) modelling approach against the re-measured SOCS... -
Functional diversification and performance of wheat–canola rotations in the Western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A Louw --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa S van der Westhuizen --- Stellenbosch University, South Africa J Strauss --- Stellenbosch University, South AfricaCrop rotation serves as a fundamental pillar within conservation agriculture (CA) farming systems, enabling the integration of more diverse crops and livestock. With increasing weather variability, new methods are needed to assess the long-term effects of diversification on the agronomic... -
Reduced Blue Crane Grus paradisea breeding productivity in intensive agricultural landscapes
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christie A Craig --- FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University of Cape Town, South Africa Bradley K Gibbons --- African Crane Conservation Programme, Endangered Wildlife Trust/International Crane Foundation, South Africa Tanya Smith --- African Crane Conservation Programme, Endangered Wildlife Trust/International Crane Foundation, South Africa Glenn I Ramke --- African Crane Conservation Programme, Endangered Wildlife Trust/International Crane Foundation, South Africa Peter G Ryan --- FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University of Cape Town, South AfricaWe compare Blue Crane Grus paradisea breeding productivity in the Western Cape wheatlands in Overberg and Swartland (2018–2021), Karoo (2009–2011) and eastern grasslands (2009–2011 and 2013). Productivity was higher in the grasslands (0.95 fledglings/attempt, 95% CI = 0.86–1.30, n =... -
Fish community dynamics of seasonal rivers of the Incomati Basin, Kruger National Park, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Kaiser-Reichel --- School of Biology and Environmental Sciences, University of Mpumalanga, South Africa GC O’Brien --- Gulbali Institute, Charles Sturt University, Australia R Petersen --- Garden Route National Park, South Africa National Parks, South Africa TW Khoza --- School of Biology and Environmental Sciences, University of Mpumalanga, South Africa A Van der Merwe --- School of Biology and Environmental Sciences, University of Mpumalanga, South Africa E Riddell --- Kruger National Park, South Africa National Parks, South Africa N Smit --- Unit for Environmental Sciences and Management, North-West University, South Africa T Dalu --- School of Biology and Environmental Sciences, University of Mpumalanga, South AfricaSeasonal rivers play a critical role in shaping aquatic ecosystems and provide essential ecosystem services in freshwater systems. Due to a limited understanding of seasonal rivers and how ecological indicators such as fish communities are structured, it is important to... -
Individual differences in technological readiness and the adoption of solar dryers: The case of horticultural smallholder farmers in Northern Tanzania
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Dismas Jerome Kimaro --- Nelson Mandela African Institution of Science and Technology (NM-AIST), Tanzania Thomas Kivevele --- Nelson Mandela African Institution of Science and Technology (NM-AIST), Tanzania Anthony Nyangarika --- Nelson Mandela African Institution of Science and Technology (NM-AIST), TanzaniaAdoption of solar dryers among smallholder farmers in developing countries remains low, despite their proven potential to enhance food security. While prior studies emphasize techno-socio-economic barriers, they often overlook individual psychological traits that likely shape adoption behaviour, assuming uniform adoption...
