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Site Relationships for Some Wood Properties of Pine Species in Plantation Forests of Southern Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: C.J. Schutz --- Sabie Forestry Research Centre, South Africa S.I. Christie --- Sabie Forestry Research Centre, South Africa B. Herman --- Sabie Forestry Research Centre, South AfricaAlthough genetic variation in wood properties of the three main pine species planted in southern Africa is high, there are important site relationships. -
Volume, Pulp and Paper-making Traits of Pinus maximinoi Provenances Planted at Two Sites in South Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: J.A. Wright --- Investigacion Forestal, Colombia B. Baylis --- Usutu Pulp Company, SwazilandTwo provenance trials of P. maximinoi H.E. Moore growing in the eastern Transvaal, South Africa, were assessed for growth, pulp and paper-making traits at approximately 11 years of age. Provenances were significantly (p<0,05) different for breaking length, burst index and... -
Regeneration Procedures of Pinus radiata in the Southern Cape Province
Item type: Journal Article • Journal: South African Forestry Journal • Authors: J.B. Zwolinski --- , USA D. G.M. Donald --- Forestry Faculty, A. van Laar --- Forestry Faculty,The present paper, which discusses the regeneration of Pinus radiata, represents Part 1 of a series of publications based on experimental studies of the subject. It provides information about the background of the trials and discusses the modification of soil... -
The Wood Properties and Qualities of Three South African-Grown Eucalypt Hybrids
Item type: Journal Article • Journal: South African Forestry Journal • Authors: F.S. Malan --- Division of Forest Science and Technology,Hybridisation is becoming an increasingly important technique in tree breeding to improve yields, adaptability and wood quality. In this study, sample material from crosses of Eucalyptus grandis with E. tereticornis, E. camaldulensis and E. urophylla established on sites of which... -
Preparation of Moulding Resins from Inexpensive By-products: Substitution of Phenol Novolac with Unmodified Lignin in Moulding Resin and its Effect on Physical Properties of Mouldings
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.E. Ysbrandy --- Department of Wood Science, Republic of South Africa G. F.R. Gerischer --- Department of Wood Science, Republic of South Africa R.D. Sanderson --- , Republic of South AfricaMouldings of 25% resin content were prepared. Substitution of phenol novolac with various ratios of unmodified bagasse lignin was investigated. The effect of lignin incorporation on tensile and dimensional stability properties of mouldings was then studied. Low levels of lignin... -
Basic Density, Tracheid Length and Strength Properties of Juvenile and Mature Wood of Pinus patula Grown in Tanzania
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.C. Ishengoma --- Department of Wood Utilization, Faculty of Forestry, P.R. Gillah --- Department of Wood Utilization, Faculty of Forestry, S. Iddi --- Department of Wood Utilization, Faculty of Forestry,More than 70% of Tanzanian plantations consist of conifers, 60% of which are Pinus patula plantations. Juvenile wood is one of the most important sources of variability. -
Laboratory Technique for the Development and Evaluation of Moulded Resinous Composites
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.E. Ysbrandy --- Dept. of Wood Science, G. F.R. Gerischer --- Dept. of Wood Science, R.D. Sanderson --- , Republic of South AfricaTwo procedures of resin moulding powder preparation were evaluated. Their results are discussed on the basis of their tensile properties for moulded dumb-bells. The best procedure was then implemented for future work on phenolated pitch/ligin systems. Mouldings of different resin... -
Preparation of Binders from Inexpensive By-products for Use in High-Pressure Phenolic Laminates: Reactive Phenosolvan Pitch-Lignin Derived Products for Use in Impregnating Varnishes and Testing of 6-Ply Hessian-Paper Laminates
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.E. Ysbrandy --- Department of Wood Science, G. F.R. Gerischer --- Department of Wood Science, R.D. Sanderson --- , Republic of South AfricaEqual mixtures of phenosolvan pitch and autohydrolysis bagasse lignin in the presence of either acid or alkaline catalyst and without catalyst were submitted to a thermal treatment stage at 230°C (Phenolation). Each of the phenolated products was mixed with phenol... -
Quantitative criteria for distinguishing melanic from vertic soil horizons in the central Kruger National Park
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.W. Fraser --- Department of Geography, T.H. van Rooyen --- Department of Geography, E. Verster --- Department of Geography,Criteria based on shrink-swell potential, viz. linear shrinkage and COLErod, were used to distinguish between melanic and vertic soil horizons of the Mooiplaas region in central Kruger National Park. For linear shrinkage the proposed boundary value separating melanic and vertic... -
Invloed van bewerking en besproeiing op die verwering van gneis in die Augrabies-gebied
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.F. Eloff --- Departement van Landbou en Watervoorsiening, W. F.A. Kirsten --- Departement van Landbou en Watervoorsiening, B.L. Plath --- Departement van Landbou en Watervoorsiening,Fisiese, chemiese en mineralogiese kriteria is gebruik om te bepaal of veranderinge in eienskappe van gronde op gneise, in die Augrabies-gebied, as gevolg van bewerking en besproeiing plaasgevind het. Bewerking en besproeiing van die halfverweerde gneise het die verweringsproses versnel... -
Die invloed van grondbewerking op enkele grondeienskappe en die gevolglike ontwikkeling en opbrengs van koring in Suid-Kaapland
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Agenbag --- Winterreënstreek, Departement van Landbou en Watervoorsiening, Republiek van Suid-Afrika J.J. Stander --- Winterreënstreek, Departement van Landbou en Watervoorsiening, Republiek van Suid-AfrikaVier verskillende bewerkingsbehandelings, wat Wissel in bewerkingsintensiteit van die intensiewe, konvensionele. skaar- en skottelbewerkingstelsel tot geen-bewerking, is oor 'n periode van 6 jaar vergelyk ten opsigte van die uitwerking op grondfaktore en die groei en opbrengs van koring. In hierdie... -
The effect of date of planting on the fibre properties of four cotton cultivars grown under irrigation
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.I. Greeff --- , Republic of South Africa J.J. Human --- Department of Agronomy, Republic of South AfricaThe effects of date of planting on the fibre properties of four cotton cultivars, Acala 1517–70, Albar 70C, Deltapine 5826 and Albacala CS-2, were investigated under irrigated conditions over a 3-year period near Groblersdal. Six dates of planting at fortnightly... -
Importance of selected soil properties on the bioactivity of alachlor and metolachlor
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaBioassays with grain sorghum (Sorghum bicolor L. Moench) cultivar NK222 were conducted in a glasshouse. Thirty-four natural soils were used in each of two experiments with alachlor [2-chloro-2′,6′-diethyl-N- (methoxymethyl) acetanilide] and metolachlor [2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-otoluidide] respectively. Linear regression analyses were performed to... -
Importance of selected soil properties on the bioactivity of acetochlor and metazachlor
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaThe bioactivity of acetochlor (2-chloro-N-(ethoxymethyl)-6′-ethyl-o-acetotoluidide) and metazachlor (2- chloro-N-(1-pyrazolylmethyl)-aceto-2′,6′-xylidide) was evaluated in thirty-two soils under controlled conditions. Grain sorghum (Sorghum bicolor L. Moench) cultivar NK222 was used as the indicator plant in the bioassays. Bioactivity was correlated with organic matter... -
Registration of cotton (Gossypium hirsutum L.) cultivars Letaba, NIK2 and OR19
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa W.H. van Staden --- , Republic of South Africa G.W. Schoeman --- , Republic of South Africa M.E. Stone --- , Republic of South Africa G. S.P. Vink --- , Republic of South AfricaLetaba, NIK2 and OR19 were released for commercial cultivation in the R.S.A. in 1989. Letaba has potential as a dryland cultivar in the Springbok Flats and northern Natal. NIK2 is intended for cultivation under irrigation in the same areas and... -
Soil properties as influenced by cultivation of the aromatic shrub Artemisia afra
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.H. Hansen-Quartey --- Department of Agronomy, Republic of South Africa S.A. Materechera --- School of Agriculture, Republic of South Africa K. Nyamapfene --- , Republic of South AfricaThe herbaceous aromatic shrub African wormwood (Artemisia afra) is thought to be indigenous to the Eastern Cape region of South Africa. In the natural environment, wherever the plant grows, patches of hard, bare ground develop around the plant. To investigate... -
Die invloed van kultivar, stikstofbemesting en tophoogte op die kwaliteit van oonddroogtabak II. Chemiese kwaliteit
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.J. Malan --- Departement Plantproduksie en Grondkunde, Republiek van Suid Afrika P.S. Hammes --- Departement Plantproduksie en Grondkunde, Republiek van Suid Afrika M.C. Dippenaar --- , Republiek van Suid AfrikaDie toenemende vraag na beter kwaliteit oonddroogtabak, het aanleiding gegee tot navorsing om te bepaal watter rol stikstofbemesting, tophoogte en kultivar speel. Vyf oonddroogtabakkultivars (TL33, OD86, A4, OD224 en OD212) is in 'n veldproef onderwerp aan drie stikstofbemestingspeile (70, 100... -
Use of solid waste bagasse from a paper mill as an organic amendment and its effect on some soil properties: a case study
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.C. Hughes --- Soil Science, South Africa S. J.A. Girdlestone --- Soil Science, South AfricaAt a paper mill in KwaZulu-Natal, South Africa bagasse waste was disposed of by burying it in a layer resulting in variable sugar cane growth. The waste was mostly organic fibres, had a high water holding capacity, and contained small... -
Changes in chemical properties and temperature during the degradation of organic wastes subjected to simple composting protocols suitable for small-scale farming, and quality of the mature compost
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.C. Smith --- , South Africa J.C. Hughes --- , South AfricaDespite the high cost of chemical fertilizers and pesticides, composting is not widely practiced in many rural communities in South Africa. To demonstrate the simplicity and benefit of composting, four composting protocols were selected, based on technology and resources available... -
Casting of kraal manure by larvae of the African rhinoceros beetle, Oryctes boas (Fabricius) and the physico-chemical properties of the casts
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.A. Materechera --- , South Africa T.S. Mkhabela --- , South AfricaThe influence of manure ingestion by larvae of Oryctes boas on casting and cast properties was studied in an incubation microcosm experiment. Inoculation of manure with larvae of O. boas significantly reduced the proportion of large (>8.0 mm) aggregates from... -
Relationships between Ambic 1 and Bray 1 extractable phosphorus in some South African arable soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. J.J. Schmidt --- , South Africa F.G. Adriaanse --- , South Africa C.C. du Preez --- Department of Soil, South AfricaSouth African analytical laboratories use different extractants for P in soils of which the most important are Bray 1, Ambic 1, Bray 2, Truog and Olsen. The fertilizer industry prefers to use Bray 1 extractions for fertilization recommendations and the... -
The effects of spatial variation of certain soil properties on the winter yield of a lucerne stand
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Venter --- Department of Plant Production and Soil Science, South Africa D.J. Beukes --- , South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa M. Van Meirvenne --- Department Soil Management and Soil Care, BelgiumIn general, agricultural fields are managed as uniform units, ignoring spatial soil heterogeneity and its effects on growth and yield of field crops. This study was conducted from June 2001—February 2002 and examines the effects of spatial variation of soil... -
Extractable soil phosphorus threshold values for dryland maize on the South African Highveld
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. J.J. Schmidt --- , South Africa F.G. Adriaanse --- , South Africa C.C. du Preez --- Department of Soil, Crop and Climate Sciences, South AfricaThe principle objective of this study was to establish P fertilizer guidelines for dryland maize on the South African Highveld according to the sufficiency concept of soil extractable P. Data sets from nine different P fertilizer trials at various localities... -
Soil properties changes after short-term livestock exclusion in “degraded” communally managed rangelands in the western Bophirima District, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.S. Moussa --- , South Africa L. Van Rensburg --- , South Africa K. Kellner --- , South AfricaLivestock grazing and detrimental overgrazing are commonly associated with severe rangeland degradation particularly in communally managed pastoral systems in South Africa. Effects of grazing exclusion on vegetation are well documented, but there is a dearth of quantitative research conducted in... -
Soil indicators of hillslope hydrology in the Bedford catchments, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.J. van Tol --- Department of Soil, Crop and Climate Sciences, South Africa P.A.L. Le Roux --- Department of Soil, Crop and Climate Sciences, South Africa M. Hensley --- Department of Soil, Crop and Climate Sciences, South AfricaWater plays a primary role in soil genesis and soil strongly influences hydrological processes (flowpaths, residence times and storage). Morphological soil properties serve as indicators of hillslope hydrological behaviour and can facilitate hydrological predictions. Three catchments in the Bedford district... -
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... -
Fire and the dynamics of a semi-arid grassland: influence on soil characteristics
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H A SnymanThe short-term impact of fire burning with the wind (head fire) and against the wind (back fire) on soil characteristics (soil-water content, soil compaction, soil temperature, organic matter, pH, exchangeable Ca, Mg, K, Na and extractable P) were determined in... -
Physicochemical characteristics of communal rangeland soils along two defined toposequences in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MS Lesoli --- Department of Livestock and Pasture Science, South Africa S Dube --- Department of Livestock and Pasture Science, South Africa AO Fatunbi --- Agricultural and Rural Development Research Institute, South Africa B Moyo --- Department of Livestock and Pasture Science, South AfricaTo proffer a sustainable solution to rangeland degradation, an understanding of the innate soil properties is vital. This study investigated the relative association of surface (0–20 cm) soil physicochemical properties, viz. electrical conductivity, cation exchange capacity (CEC), soil organic carbon,... -
The effect of harvesting operations, slash management and fertilisation on the growth of a Eucalyptus clonal hybrid on a sandy soil in Zululand, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: ColinW Smith Ben du ToitHarvesting operations during clearfelling and extraction of timber from commercial plantations result in many processes that may affect long-term site productivity such as soil compaction and residue manipulation. The objective of this work was to evaluate the effects of various... -
Kraft Pulping Properties of Acacia mearnsii and Eucalyptus grandis Grown in Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: A. Muneri --- , AustraliaPulpwood samples from 8-year old Acacia mearnsii and Eucalyptus grandis plantations grown in Zimbabwe were evaluated for kraft pulping, bleaching and papermaking properties. The possibility of co-pulping the two species was also investigated. -
Validation of a Coping Scale in an African Context
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Carelyn van der Walt --- North-West University, South Africa Johan C. Potgieter --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa Michael Q. Temane --- North-West University, South AfricaThe research aims were to compile and validate a multi-dimensional coping measure, taking African-centred coping behaviour into consideration. In a pilot study the Setswana-COPE (S-COPE) and the Africultural Coping Systems Inventory (ACSI) were administered to Setswana-speaking participants (N = 274)... -
Validation of a Community Collective Efficacy Scale in an African Context
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Wilmien van Straten --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marie P. Wissing --- North-West University, South Africa Johan Potgieter --- North-West University, South AfricaThe aim of this study was to validate a community collective efficacy scale in an African context. An abridged version of the Community Collective Efficacy Scale was validated in a cross-sectional survey design. Participants (N = 1050) from urban (n... -
Psychometric Properties of Various Scales Measuring Psychological Well-Being in a South African Context: The FORT 1 Project
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jan A. B. Wissing --- North-West University, Marié P. Wissing --- North-West University, Marietjie M. du Toit --- North-West University, Q. Michael Temane --- North-West University,The aim of this study was to do a first phase screening of psychometric properties of various scales measuring facets of psychological well-being so as to address further questions in the FORT 1 project (FORT 1 = Clarifying the nature... -
Development and Initial Validation of a General Psychological Well-being Scale (GPWS) in an African Context
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Itumeleng P. Khumalo --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marié P. Wissing --- North-West University, South AfricaThis study aimed to develop and validate the General Psychological Well-being Scale (GPWS) in an African sample, based on the empirical overlap between hedonic and eudaimonic facets of well-being as found in previous research. The quantitative cross-sectional study was conducted... -
Flourishing of Students in a Tertiary Education Institution in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Llewellyn Ellardus Van Zyl --- North-West University (VTC), South Africa Sebastiaan Rothmann --- North-West University (VTC), South AfricaThe aims of this study were to examine the relationship between flourishing and academic performance (AP), life satisfaction (SWT), and positive affect (PA). A quantitative cross-sectional survey design was used on a convenience sample of university students (n = 845)... -
Career Counselling: The Usefulness of the Career Interest Profile (CIP)
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Annamaria Di Fabio --- University of Florence, Jacobus Gideon Maree --- University of Pretoria,This study reports the findings from exploratory career counselling with Italian undergraduate university students using the Career Interest Profile (CIP). The participants (n = 178, females = 51.69%; mean age 22.28, SD = 1.59 years) received elective career counselling on... -
Seasonal variations of agar extracted from different life stages of Gracilaria cliftonii (Gracilariales, Rhodophyta) from Western Australia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Muñoz --- Centre for Environment and Sustainable Aquaculture, Faculty of Science and Engineering, Australia R Fotedar --- Centre for Environment and Sustainable Aquaculture, Faculty of Science and Engineering, AustraliaSeasonality in yield, physical and chemical properties of the native agar from different life stages of Gracilaria cliftonii was investigated over a period of six seasons (autumn 2008–winter 2009). Agar yield and its properties varied as a function of seasons... -
Protecting wood with a water repellent/ paint combination
Item type: Journal Article • Journal: South African Forestry Journal • Authors: J.D. van Zyl --- , W.J. van Wyk --- ,The influence of high and/or low solids water repellent on the durability of an alkyd enamel paint on P. radiata was investigated. Apart from increasing the drying time of the first paint coat, a low solids water repellent proved a... -
Alternative eucalypt species for Zululand: Seven year results of site: species interaction trials in the region
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R A W Gardner --- , South AfricaThe ICFR initiated a search for alternative eucalypt species for the Zululand Coastal Plain region during 1992 by establishing a series ofsite: species interaction trials in the area. Sixteen pure species (seedlings), one E. grandis intra-specific clone and five inter-specific... -
The pulp and paper properties of Sirex noctilio infested and fire-damagedthermomechanically pulped, South African grown Pinus patula
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M du Plessis --- , South Africa NJ le Roux --- Department of Statistics and Actuarial Science, South Africa S Gardner-Lubbe --- Department of Statistical Sciences, South Africa JPJ Swart --- Department of Forest and Wood Science, South Africa T Rypstra --- Department of Forest and Wood Science, South AfricaPinus patula is the softwood species most extensively planted in South Africa. However, large portions of these plantings are under threat from Sirex noctilio infestation and occasional forest fires. In this exploratory investigation, the effects of tree age, Sirex noctilio... -
Exploring differences of soil quality as related to management in semiarid rangelands in the western Bophirima District, North West province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AS Moussa L van Rensburg K Kellner A BationoDifferences in land-use management may result in different rangeland condition (soil, vegetation and biodiversity) and productivity. Vegetation condition in contrasting land-use management systems is well documented in semiarid rangelands, but relatively little information is available on soil quality. This study... -
On the Interlacing of Zeros of Linear Combinations of Jacobi Polynomials from Different Sequences
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kathy Driver Kerstin Jordaan Norbert MbuyiWe investigate the interlacing of the zeros of linear combinations pn +aqm with the zeros of the components pn and qm , where {pn }∞ n=0 and {q m }∞ m=0 are different sequences of Jacobi polynomials... -
Properties of the Simpson discrete Fourier transform
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: P. Singh --- School of Mathematics, Statistics and Computer Science, South Africa V. Singh --- School of Mathematics, Statistics and Computer Science, South AfricaThe Simpson discrete Fourier transform (SDFT) and its inverse are transformations relating the time and frequency domains. In this paper we state and prove the important properties of shift, circular convolution, conjugation, time reversal and Plancherel's theorem. In addition, we... -
Validation of the Meaning in Life Questionnaire in a South African context
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lesego Temane --- School for Psychosocial Behavioural Sciences, South Africa Itumeleng P. Khumalo --- Optentia Research Focus Area, South Africa Marié P. Wissing --- Africa Unit for Transdisciplinary Health Research, South AfricaThe aim of this study was to investigate the psychometric properties of the Meaning in Life Questionnaire (MLQ) in a South African sample. A multi-cultural group of undergraduate students (N = 326) completed the MLQ and other measures. Descriptive statistics, reliability, inter-item... -
Interactions between stream channel incision, soil water levels and soil morphology in a wetland in the Hogsback area, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mohammed Y Omar --- Department of Agronomy, South Africa Pieter AL Le Roux --- Department of Soil, Crop and Climate Sciences, South Africa Johan J van Tol --- Department of Agronomy, South AfricaWetland degradation in the form of channel incisioning can significantly alter the hydrological functioning of a wetland. In this study in a small headwater wetland in the Hogsback area, Eastern Cape province, the impact of channel incisioning on soil water... -
Acacia mearnsii industry overview: current status, key research and development issues
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Julian Moreno Chan --- Institute for Commercial Forestry Research, South Africa Philip Day --- NTE Company (Pty) Ltd, South Africa John Feely --- Forestry consultant, South Africa Rob Thompson --- NCT Forestry Co-operative Ltd, South Africa Keith M Little --- School of Natural Resource Management, South Africa Craig H Norris --- NCT Forestry Co-operative Ltd, South AfricaAcacia mearnsii De Wild (black wattle) is an important plantation species for tannin production and woodchip exports in South Africa and Brazil. This study provides an updated overview of the black wattle industries in both countries, including planted areas and... -
The Effects of Phosphate Fertilizers and Manure on Maize Yields in South Western Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: J. S. Ademba --- Kenya Agricultural Research Institute (KARI) Kisii, Kenya J. K. Kwach --- Kenya Agricultural Research Institute (KARI) Kisii, Kenya A. O. Esilaba --- Kenya Agricultural Research Institute (KARI) Headquarters, Kenya S. M. Ngari --- Egerton University, KenyaPhosphorus, nitrogen and Striga hermonthica are the major constraints to maize production in the Nyanza Province of Kenya. Field trials were conducted on-farm in Nyanza Province to investigate the effects of phosphate fertilizers and manure on maize yields. The experimental... -
Geotechnical properties of non-crystalline coastal plain sand derived lateritic soils from Ogua, Niger Delta, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Gabriel Oladapo Adeyemi --- Department of Geology, Lekan Olatayo Afolagboye --- Department of Geology, Alexandra Chinwenwa Chukwuemeka --- Department of Geology,Lateritic soils derived from coastal plain sands around Ogua, Niger Delta in Nigeria, were investigated with a view to elucidate their geotechnical characteristics, which may have influence on their engineering applications. The geotechnical properties of these soils (their compaction parameters,... -
In situ evaluation of internal drainage in duplex soils of the Tukulu, Sepane and Swartland forms
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sabelo SW Mavimbela --- Department of Soil, Crop and Climate Sciences, South Africa Leon D van Rensburg --- Department of Soil, Crop and Climate Sciences, South AfricaInternal drainage is a critical hydrological process in soil water conservation. Pedological and physical properties of the South African Tukulu, Sepane and Swartland soil types were studied in respect to soil water storage and hydraulic characteristics during internal drainage. Soil... -
Antioxidant content and phytochemical properties of apple ‘Granny Smith’ at different harvest times
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Asanda Mditshwa --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Department of Horticultural Sciences, Faculty of AgriSciences, South Africa Filicity Vries --- Agricultural Research Council Infruitec-Nietvoorbij, South Africa Kobus van der Merwe --- Agricultural Research Council Infruitec-Nietvoorbij, South Africa Elke Crouch --- Department of Horticultural Sciences, Faculty of AgriSciences, South Africa Umezuruike Linus Opara --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Department of Horticultural Sciences, Faculty of AgriSciences, South AfricaUnderstanding the biochemical composition of fruit to be stored could be used as a tool for planning postharvest management to maintain quality and reduce losses of fresh fruit. This study evaluated the effects of harvesting fruit seven days before (H1)... -
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,... -
Effect of briquetting temperature on the properties of biomass briquettes
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Okey Francis Obi --- Agricultural and Bioresources Engineering Department, Faculty of Engineering, NigeriaThe importance of and growing worldwide interest in developing technologies that could utilise biomass material cannot be over looked particularly in developing countries. This study investigated the effect of briquetting temperature (normal and high temperature) on the physical and combustion... -
The potential of young, green finger-jointed Eucalyptus grandis lumber for roof truss manufacturing
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Philip L Crafford --- Department of Forest and Wood Science, South Africa C Brand Wessels --- Department of Forest and Wood Science, South AfricaSouth Africa is a timber-scarce country that will most probably experience a shortage of structural softwood lumber in the near future. In this study the concept of using young, green finger-jointed Eucalyptus grandis lumber was evaluated for possible application in... -
The exploratory and confirmatory factor analyses of two subjective career success instruments
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Eileen Koekemoer --- Department of Human Resource Management, South Africa Jan Alewyn Nel --- Department of Human Resource Management, South Africa Audine du Toit --- WorkWell Research Unit, South AfricaThis study investigated the psychometric properties of two subjective career success instruments within the South African context: Perceived Career Success (PCSS: Gattiker & Larwood, 1986) and Life Success Measures Scale (LSMS: Parker & Chusmir, 1992). Data were collected via a... -
Characterisation of a Tunisian coastal lagoon through hyperspectral underwater irradiance
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DH Nourisson --- Department of Biology, Italy F Scapini --- Department of Biology, Italy L Massi --- Department of Biology, Italy L Lazzara --- Department of Biology, ItalyNorth African coastal lagoons are unique ecosystems that often suffer degradation due to human activities. Therefore, monitoring methods are required to identify stressors and assist with the management of these valuable and often understudied ecosystems. A synthetic indicator of water... -
Fuel properties comparison of species of microalgae and selected second-generation oil feedstocks
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Andrew C. Eloka-Eboka --- Discipline of Mechanical Engineering, South Africa Chiemela Onunka --- Discipline of Mechanical Engineering, South AfricaComparative investigation and assessment of microalgal technology as a biodiesel production option was studied alongside other second generation feedstocks. This was carried out by comparing fuel properties of species of Chlorella vulgaris, Duneliella spp., Synechococus spp. and Senedesmus spp. with... -
Genetic variation in growth and wood-quality traits of Corymbia citriodora subsp. variegata across three sites in south-east Queensland, Australia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tran D Hung --- School of Agriculture and Food Sciences, Australia Jermey T Brawner --- Forest Industries Research Centre, Australia David J Lee --- Forest Industries Research Centre, Australia Roger Meder --- Forest Industries Research Centre, Australia Mark J Dieters --- School of Agriculture and Food Sciences, AustraliaTen growth or wood-quality traits were assessed in three nearby Corymbia citriodora subsp. variegata (CCV) open-pollinated family-within-provenance trials (18 provenances represented by a total of 374 families) to provide information for the development of a breeding program targeting both pulp... -
Physical and hydrological properties of peatland substrates from different hydrogenetic wetland types on the Maputaland Coastal Plain, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Marvin Gabriel --- Faculty of Life Science, Germany Niko Roßkopf --- Faculty of Life Science, Germany Jutta Zeitz --- Faculty of Life Science, Germany Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa Mathilde L Pretorius --- Centre for Environmental Management, South Africa Piet-Louis Grundling --- Centre for Environmental Management, South AfricaThe Maputaland Coastal Plain in KwaZulu-Natal province is home to 60% of all peatlands occurring in South Africa. These ecosystems are increasingly threatened by unsustainable agricultural utilisation, a growing population and climate change. The aim of the study was, therefore,... -
Variations on soil carbon dioxide flux with land-use type and selected soil properties in the hardveld of Botswana
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Oagile Dikinya --- Department of Environmental Science, Botswana Julius Atlhopheng --- Department of Environmental Science, Botswana Trust Manyiwa --- Department of Environmental Science, BotswanaThe dynamics of carbon dioxide (CO2) flux in the hardveld regions of Botswana are poorly understood, with previous studies having concentrated on sandveld and pan environments. In particular, soil organic carbon (SOC) has a positive influence on CO2 emissions to... -
Impact of fuelwood quality and quantity on the energy use of rural households in the Omusati Region, north-central Namibia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Feliciana N Hainduwa --- Department of Forest and Wood Science, South Africa Cori Ham --- Department of Forest and Wood Science, South Africa Martina Meincken --- Department of Forest and Wood Science, South AfricaThe relation between fuelwood use and fuelwood quality and quantity was studied in two northern Namibian rural communities with different levels of fuelwood availability. Household surveys were conducted and fuelwood quality was assessed through laboratory studies. The study found differences... -
Gunnera perpensa L.: A multi-use ethnomedicinal plant species in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Fitsum K. Mammo --- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, South Africa Viresh Mohanlall --- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, South Africa Francis O. Shode --- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, South AfricaGunnera perpensa L. is a medicinal plant used in many parts of South Africa to treat several human ailments. G. perpensa is inherited from and linked to the Siswati, Changana, Sotho, Venda, Shona, Tsonga, and Zulu traditional healing systems, particularly... -
Developmental rates and morphological properties of fibres in two eucalypt clones at sites differing in water availability
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: DM Drew NW PammenterOne of the ways in which the global forestry industry can remain competitive is to improve the predictability of properties of fibres produced, particularly in plantations. Since the properties of the fibres are determined by growth and developmental processes, it... -
Reliability of measures of work engagement and psychological well-being among South African state security forces
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nondumiso Mlangeni --- Department of Industrial Psychology, Faculty of Military Science, South Africa Gideon Van Dyk --- Department of Industrial Psychology, Faculty of Military Science, South AfricaThis study reports on the psychometric properties of measures of work engagement and psychological well-being in the South African state security forces. The research sample consisted of a combined sample of 178 soldiers and 57 police officers (34% females). They... -
Investigation of the properties and production of sawdust ceiling tile using polystyrene as a binder
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Pius Bamidele Mogaji --- Department of Mechanical Engineering, Nigeria Sesan Peter Ayodeji --- Department of Mechanical Engineering, Nigeria Ayodeji David Olatise --- Department of Mechanical Engineering, Nigeria Isiaka Oluwole Oladele --- Department of Material and Metallurgical Engineering, NigeriaIn this research, a production and properties investigation of wood sawdust ceiling tile using polystyrene as a binder was carried out. The content by weight of the wood sawdust was 5, 10, 15, 20, 25 and 30% consisting of three... -
Peatland substrates in northern KwaZulu-Natal: a study of the forming environments, properties and an approach towards classification
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvin Gabriel --- Faculty of Life Science, Germany Camelia Toader --- Faculty of Mathematics and Natural Sciences, Germany Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Niko Roßkopf --- Faculty of Life Science, Germany Piet-Louis Grundling --- Centre for Environmental Management, South Africa Cornelius Wilhelm van Huyssteen --- Department of Soil, Crop, and Climate Sciences, South Africa Jutta Zeitz --- Faculty of Life Science, GermanyPeatlands in South Africa are rare and fulfil important ecological functions but are threatened by degradation. Because of this peatlands have gained increasing attention from scientists during the last two decades. However, knowledge of the peatland substrates and the means... -
Alternative eucalypts for commercial pulpwood production at moderately dry sites in the warm temperate zone of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Robin AW Gardner --- Institute for Commercial Forestry Research, South Africa Keith M Little --- School of Natural Resource Management, Nelson Mandela Metropolitan University, South Africa Arnulf Kanzler --- Sappi Forest Research, South Africa Thimagren N Naidoo --- Sappi Forest Research, South AfricaDuring 2001, a series of four site–taxa interaction trials was established in the warm temperate (mean annual temperature range 16–19 °C) forestry climatic zone of KwaZulu-Natal (KZN), South Africa. The main objective was to investigate the commercial forestry potential of... -
Quantitative pedology to evaluate a soil profile collection from the Brazilian semi-arid region
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Helena SK Pinheiro --- Agronomy Institute, Soil’s Department, Brazil Lúcia Helena C dos Anjos --- Agronomy Institute, Soil’s Department, Brazil Pedro AM Xavier --- Agronomy Institute, Soil’s Department, Brazil Cesar S Chagas --- Embrapa Solos, Brazil Waldir de Carvalho Junior --- Embrapa Solos, BrazilThis work applies pedometric tools to analyse soil property information relevant to morphological characterisation and soil classification. The objective of this paper was further to identify similarities in soil properties among a soil profile collection. The harmonisation of soil data... -
Chemical characteristics of woods from several Chilean native forest species and their relationship with nanomechanical cell properties
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: María Graciela Aguayo --- Centro de Biomateriales y Nanotecnología, Chile William Gacitúa --- Centro de Biomateriales y Nanotecnología, Chile Paulina Valenzuela --- Centro de Biomateriales y Nanotecnología, Chile Regis Teixeira Mendonça --- Laboratorio de Recursos Renovables, Centro de Biotecnología, Chile Pablo Reyes --- Centro de Excelencia en Nanotecnología, Fundación Leitat Chile, ChileThe objective of this research was to study the chemical and nanomechanical characteristics of native woods grown in southern Chile region. The species analysed were Drimys winteri, Laureliopsis philippiana, Aextoxicon puctatum, Nothofagus alpina, Nothofagus dombeyi, Laurelia sempervirens, Austrocedrus chilensis and... -
Radial variation of wood properties in Neolamarckia cadamba trees from an East Java community forest
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Yus Andhini Bhekti Pertiwi --- Faculty of Agriculture, Japan Haruna Aiso --- Faculty of Agriculture, Japan Futoshi Ishiguri --- Faculty of Agriculture, Japan Sri Nugroho Marsoem --- Faculty of Forestry, Indonesia Shinso Yokota --- Faculty of Agriculture, JapanRadial variations in wood properties, cell morphologies and cell proportions were investigated for nine 4-year-old Neolamarckia cadamba trees planted in a community forest in East Java, Indonesia. The relationships between stem diameter and wood properties, cell morphologies or cell proportions... -
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... -
Hydropedological grouping of South African soil forms
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johan J van Tol --- Department of Soil, Crop and Climate Sciences, South Africa Pieter AL Le Roux --- Institute for Groundwater Studies, University of the Free State, South AfricaThe science of hydropedology has progressed significantly in the past two decades, especially with regards to the interpretation of soil morphology and relating these interpretations to the hydrological behaviour of horizons, profiles, hillslopes and catchments. Soil classification is pivotal to... -
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... -
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... -
Effect of encroaching woody plant species on soil nutrients and selected soil chemical properties in communally managed semiarid savanna grazing lands in the North West province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Pieter W Malan --- , South Africa Makuété A P Tiawoun --- , South Africa Khumoetsile S Molatlhegi --- , South Africa Simeon A Materechera --- , South AfricaWoody plant encroachment is recognised as one of the major threats to biodiversity in ecosystems. In many arid and semiarid areas of South Africa, indigenous encroacher species are proliferating, but the factors that favor their abundance are poorly understood. This... -
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,... -
The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Onalenna Gwate --- , South Africa Sukhmani K Mantel --- , South Africa Lesley A Gibson --- , United Kingdom Zahn Munch --- , South Africa Bukho Gusha --- , South Africa Anthony R Palmer --- , South AfricaGlobally, grasslands are under threat from woody encroachment by invasive alien plants and this undermines grass production. The study sought to determine the effects of Acacia mearnsii clearing on soil physico-chemical properties and grass production. Soil samples were collected from... -
Energy properties of Eucalyptus benthamii wood based on tree age and region in Guarapuava, Paraná state, Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Cristiane Carla Benin --- , Brazil Danielle de Moraes Lúcio --- , Brazil Luciano Farinha Watzlawick --- , Brazil Vanderlei Aparecido de Lima --- , BrazilThis study aimed to evaluate the properties of Eucalyptus benthamii wood for bioenergy purposes. Trees were sampled in five diametric classes and used to evaluate properties of the wood according to three ages (5, 6 and 7 years) in three... -
Development and validation of an operational multi-layered model for estimation of soil moisture at point-scale in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L Myeni --- , South Africa ME Moeletsi --- , South Africa AD Clulow --- , South AfricaData discontinuity is the major challenge that hinders the integrity of datasets from the sparse soil moisture monitoring networks in developing countries. In this study, a simplified, multi-layered soil water balance model to estimate daily soil moisture at point-scale from... -
Evaluation of soil physico-chemical properties as affected by canopies of scattered agroforestry trees on croplands
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Shimbahri Mesfin --- , Ethiopia Hailay Haileselassie --- , EthiopiaAgroforestry tree species play an important role in improving soil fertility. Though studies have confirmed that different species show different potentials to improve soil fertility, it is difficult to compare them as the studies were conducted in different areas. The... -
Water quality of the Blue Nile at Khartoum, Sudan, before complete filling of the Grand Ethiopian Renaissance Dam
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AMH Bashir --- University of Khartoum, Sudan ME Abdelrahman --- University of Khartoum, Sudan FA Sinada --- University of Khartoum, SudanPhysico-chemical variables were monitored biweekly for the Blue Nile at Khartoum between July 2017–June 2019. The aim was to document the present status of water quality at Khartoum before complete filling of the Grand Ethiopian Renaissance Dam (GERD). Physico-chemical parameters... -
Role of the Lethabo Weir in altering the phytoplankton community structure of the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Janse van Vuuren --- North-West University, South Africa A Swanepoel --- , South AfricaDuring 2012, aerial photographs of the Vaal River, South Africa, showed differences in water colour on either side of the Lethabo Weir. Water upstream of the weir was muddy brown, while water downstream was olive-green. Physical and chemical analyses indicated... -
Comparison of rehabilitation treatments on mechanically reconstructed soils following strip coal mining activities: effects on soil properties
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: DJ Beukes --- Agricultural Research Council, South Africa LD Wiese-Rozanov --- Agricultural Research Council, South Africa MV Kidson --- Agricultural Research Council, South AfricaA rainfed rehabilitation trial on mechanically reconstructed soil, following strip coal mining, was laid out in the Mpumalanga Province of South Africa. It was used to evaluate seven rehabilitation treatments with four different depths of topsoil on coal spoil over... -
Some physical properties of a sandy clay loam humic soil under native forest and sugarcane in northern KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: --- School of Agricultural, South Africa --- School of Agricultural, South Africa --- School of Agricultural, South AfricaThe conversion of native forest land to commercial farming can have profound effects on soil physical properties. This study compared bulk density (BD), saturated hydraulic conductivity (Ks) and other physical properties of a sandy loam humic soil under native forest... -
Nutritional improvement of cactus fruit scraps with addition of alfalfa or Atriplex halimus, and comparison of two animal feed preservation methods (silage and solar drying)
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L El Hajji --- Sultan Moulay Slimane University, Morocco H Azzouzi --- Sultan Moulay Slimane University, Morocco M Achchoub --- Sultan Moulay Slimane University, Morocco K Elfazazi --- National Agricultural Research Institute, Morocco S Salmaoui --- Sultan Moulay Slimane University, MoroccoThis work aimed to study the effect of adding alfalfa (Medicago sativa L.) and Atriplex halimus L. on biochemical properties, microbial flora, ferment silage and solar-dried cactus fruit scraps. Alfalfa and Atriplex were added to cactus silage to improve nutrient... -
Validation of the Goldsmiths Musical Sophistication Index in the Arab context: Results and implications of a Moroccan study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Manal Lamouine --- University of Sidi Mohamed Ben Abdellah, Morocco Jennifer A. Bugos --- University of South Florida, United States of America Khadija Ouadi --- University of Sidi Mohamed Ben Abdellah, MoroccoThe Goldsmiths Musical Sophistication Index (Gold-MSI) is an extensively used self-report measure of musical skills and behaviours; however, to-date, no validated Arabic translation of the Gold MCI exists. This study reports on the Gold-MSI validation in the Moroccan setting. Our... -
Soil properties influence tree fall in a fragment of Atlantic Forest in Recife, Pernambuco, Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Maria Salomé de Lima --- Rural Federal University of Pernambuco, Brazil Fernando José Freire --- Rural Federal University of Pernambuco, Brazil Débora de Melo Almeida --- Rural Federal University of Pernambuco, Brazil Brivaldo Gomes de Almeida --- Rural Federal University of Pernambuco, Brazil Renato Lemos dos Santos --- Federal Institute of Education, Science and Technology of Pernambuco, Brazil Luiz Carlos MarangonTrees falling in natural environments can be attributed to tree age, terrain topography, amount of rainfall, wind strength, root type and soil properties. Soil plays a role in nutrient cycling, water retention and distribution, and tree support, and can be... -
Simulated rangeland conditions and seasonal variations influence soil quality in semi-arid central South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JDJ Marx --- University of the Free State, South Africa E Kotzé --- University of the Free State, South Africa JJ van Tol --- University of the Free State, South Africa PF Loke --- University of the Free State, South AfricaThe study examined long-term effects of rangeland conditions and seasonal variations on soil quality without confounding grazing effects. Samples were collected seasonally from good, moderate, poor, bare and cultivated rangeland conditions at soil depths of 0–10 cm and analysed for... -
Marine gastropods as potential sources of medicinal and nutraceutical compounds
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TT Kereeditse --- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa (UNISA), South Africa YAT Ngandjui --- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa (UNISA), South Africa I Kamika --- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa (UNISA), South Africa K de Bruyn --- Agriculture and Environmental Science Laboratories, College of Agriculture and Environmental Sciences, University of South Africa (UNISA), South Africa LM Madikizela --- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa (UNISA), South Africa TAM Msagati --- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa (UNISA), South AfricaGastropods make up the most diverse class of molluscs. Marine species of gastropods include a vast array of sea slugs and sea snails, which are among the most diverse and ecologically significant groups of marine invertebrates. Exploring these fascinating marine...