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Fertilization of southern tall grassveld of natal: Effects on botanical composition and utilization under grazing
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.R. Barnes --- Department of Grassland Science, D.I. Bransby --- Department of Grassland Science, N.M. Tainton --- Department of Grassland Science,The long‐term effects of nitrogen, phosphate and lime on change in botanical composition and utilization under grazing of Southern Tall Grassveld of Natal are presented. Nitrogen, phosphate, lime and type of nitrogen affected botanical composition significantly. Generally, fertilization had the... -
The effect of source of nitrogen on the dry matter yield, nitrogen and nitrate‐N content of Lolium multiflorum
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.J. Eckard --- Department of Agriculture and Water Supply (Natal Region), Republic of South AfricaThree sources of N fertilizer (urea, limestone ammonium nitrate (LAN) and ammonium sulphate) showed no consistent significant trends in terms of the dry matter yield and nitrogen or nitrate‐N content of midmar ryegrass. Ammonium sulphate was found to acidify the... -
Nutrition of intensive pastures in the summer rainfall areas of southern Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N. Miles --- Department of Agricultural Development, Republic of South AfricaConsideration is given to the current state of knowledge regarding the nutrition of cultivated pastures in the summer rainfall areas of southern Africa. Research efforts over the years have concentrated on the nitrogen (N) requirements of pastures, with relatively little... -
The response of Bambara groundnut (Voandzeia subterranea) and pigeon pea (Cajanus cajan) to applications of lime, P and K
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: V.D. Wassermann --- Department of Agriculture, A.J. Kruger --- Department of Agriculture, Gillian Heyns --- Department of Agriculture,Voandzeia subterranea and Cajanus cajan are important pulse crops in tropical and subtropical Africa and their drought hardiness and ability to utilize poor soils are inter alia reasons for this popularity. Both species hold considerable promise as crops in South... -
The influence of lime and phosphorus on the growth of white clover on highly weathered Natal soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. Miles --- , P.E. Bartholomew --- , C.I. Macdonald --- ,Results of field studies conducted on highly weathered Natal soils in which the performance of white clover (Trifolium repens cv. Regal ladino) was examined under a range of lime and P treatments applied in factorial combination, are presented. Despite adverse... -
Invloed van bemesting op die oliekonsentrasie oliekwaliteit van sonneblomsaad
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.L. Loubser --- Olie- en Proteïensadesentrum, Departement Landbou en Watervoorsiening, C.L. Grimbeek --- Olie- en Proteïensadesentrum, Departement Landbou en Watervoorsiening,Influence of fertilization on the oil concentration and oil quality of sunflower seed. Fertilizer trials (N,P,K and lime) were conducted over two seasons at three localities. Results indicate that 150 kg N ha−1 fertilizer decreased the oil concentration of the... -
A field evaluation of the differential tolerance to soil acidity of forty-eight South African maize cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ana Paula Mendes --- Summer grain Sub-Centre, M. P.W. Farina --- Summer grain Sub-Centre, P. Channon --- Summer grain Sub-Centre, Marie Smith --- Biometry Section, Directorate of Biometrie and Datametric Services,A field experiment was conducted on a Normandien clay loam (Plinthic Paleudult) to compare the acid tolerance of 48 commercially grown maize (Zea mays L.) cultivars. Cultivars were compared in terms of grain yield, plant height and leaf Al content... -
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... -
Response of subterranean clover to liming and phosphate fertilization on a low potassium soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Wooldridge --- , Republic of South Africa R.E. Harris --- , Republic of South AfricaSeveral Trifolium varieties grown in an acid Bokkeveld shale soil responded positively to small additions of lime and P. Growth was probably limited by a K deficiency, and it is unlikely that Trifolium species could be successfully grown as cover... -
The effect of lime, KCl and parent material on the cation exchange capacity of some acid subsoils of the western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Wooldridge --- , Republic of South AfricaCation exchange capacity (CEC) values obtained by 22Na dilution for a number of mineralogically diverse acid subsoils reflected positive responses to lime and to treatment with KCl such that: CEC (unlimed, no KCl) < (unlimed + KCl) < (limed, no... -
Comparative response of lucerne (Medicago sativa L.) and sainfoin (Onobrychis viciaefolia Scop.) to applications of P, K and lime
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: V.D. Wassermann --- Department of Agricultural Development, Transvaal Region, Republic of South Africa Marike van den Berg --- Grassland Research Centre, Republic of South AfricaA pot experiment and an irrigated field trial in which the response of sainfoin and lucerne to different levels of P, K and lime was compared, are described. The results of the pot experiment suggested a better response to lime... -
Selenium in some grass pastures of Natal and fertilizer-induced Se uptake by ryegrass (Lolium multiflorum)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.P. Higgins --- Department of Agronomy, Republic of South Africa M.V. Fey --- Department of Agronomy, Republic of South AfricaSamples of irrigated ryegrass pasture and natural veld from various parts of Natal were found, with one exception, to lack the amount of Se normally considered sufficient (0.1 mg kg−1) for grazing animals. No soil properties could be identified by... -
The response of Italian ryegrass to sodium, lime and potassium on an acidic Natal soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.D. Manson --- , Republic of South AfricaUnless corrected, soil acidity and K deficiency frequently limit growth of intensive temperate pastures on highly weathered soils in South Africa. A field trial, with Italian ryegrass (cv. Midmar), was established on a Himeville sandy clay loam (typic Hapludox) for... -
Evaluation of an undisturbed-soil incubation method as an index of soil nitrogen availability in a limed and non-limed soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.J. Raath --- , Republic of South Africa D. Saayman --- Department of Soil and Agricultural Water Science, Republic of South AfricaNitrogen mineralization potentials were determined using an undisturbed-soil incubation procedure. The purpose of this study was to evaluate the above-mentioned method as an index of soil nitrogen availability. Undisturbed soil samples (0–150 and 150–300 mm) of a limed (pH 7.3)... -
Effects of liming on microbial activity and N mineralization in broiler manure-amended soils from Bizana, Eastern Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.G. Jezile --- Department of Soil and Crop Sciences, USA D.G. Westfall --- Department of Soil and Crop Sciences, USA G. Peterson --- Department of Soil and Crop Sciences, USA D.R. Child --- Department of Rangeland Ecosystem Sciences, USA D.P. Turner --- , RSA W. Van Averbeke --- , RSAA laboratory incubation study was conducted to determine the effects of liming on microbial activity and N mineralization in two Bizana soils amended with broiler manure. The experimental layout was a 4 x 3 complete factorial experiment with three replicates,... -
Citrus tristeza virus cross-protection of ‘Palmer’ navel orange in the Eastern Cape Province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.P. van Vuuren --- , J.G.J. Maritz --- , N. Combrink --- ,Citrus tristeza virus (CTV) is endemic in southern Africa due to the abundance of the citrus brown aphid, To x -optera citricida Kirk., the main insect vector. Virus-free propagation material in the Southern African Citrus Improvement Scheme is pre-inoculated with... -
Assessing the potential soil acidification risk under dryland agriculture in the Mlondozi district in the Mpumalanga Province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. Jansen van Rensburg --- Department of Plant Production and Soil Science, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa D.J. Beukes --- , South Africa H.L. Weepener --- , South Africa P.J. Beukes --- , South AfricaThe farming community in the Mlondozi district in the Mpumalanga Province of South Africa has been part of a government liming intervention with the objective to ameliorate the serious soil acidity problem in the district. The current study was undertaken... -
Effect of tillage systems and nitrogen application rates on selected physical and biological properties of a clay loam soil in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: TS Taylor --- Soil Science, School of Environmental Sciences, South Africa LW Titshall --- Soil Science, School of Environmental Sciences, South Africa JC Hughes --- Soil Science, School of Environmental Sciences, South Africa GR Thibaud --- Soil and Analytical Services Division, Department of Agriculture, South AfricaThe effects of agricultural management practices on soil physical and biological parameters provide fundamental information for assessing sustainability. Tillage (annual conventional tillage and no-till) and nitrogen fertiliser (limestone ammonium nitrate at rates of 0, 100 and 200 kg N ha−1)... -
The Response of Eucalyptus grandis to Fertilising with Nitrogen, Phosphorus, Potassium and Dolomitic Lime on a Mispah Soil Series
Item type: Journal Article • Journal: South African Forestry Journal • Authors: M.A. Herbert --- , South AfricaThe final results are presented of a comprehensive N, P,K and dolomitic lime factorial experiment with Eucalyptus grandis planted on a fully cultivated Mispah soil series. On this marginal site, fertilising had a marked effect on the growth of E... -
What's the latest on sulphonylureas in the management of type 2 diabetes?
Item type: Journal Article • Journal: South African Family Practice • Authors: Gail Mkele [AN0001]Sulphonylureas act by binding to sulphonylurea receptors and stimulating insulin secretion from pancreatic beta cells. This class of oral hypoglycaemic agents is still widely used in the management of type 2 diabetes in patients where lifestyle changes alone are insufficient... -
Aspects of the anatomy and histology of the alimentary canal of the greater cane rat, Thryonomys swinderianus, with reference to its feeding physiology
Item type: Journal Article • Journal: African Zoology • Authors: A. van Zyl --- Department of Zoology and Entomology, South Africa R.V. Rambau --- Department of Zoology and Entomology, South Africa M. van der Merwe --- Department of Zoology and Entomology, South AfricaAspects of the anatomy and histology of the alimentary canal of Thryonomys swinderianus were studied to gain a better understanding of this animal’s ability to digest large quantities of fibre. Morphometric measurements of the gut regions were taken with the... -
Effect of soil- and foliar-applied nitrogen fertiliser on growth, yield and protein content of spring wheat (Triticum aestivum L.) under glasshouse conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mongezi M Mbangcolo --- Dohne Agricultural Development Institute, South Africa Petrus J Pieterse --- AgriSciences, Department of Agronomy, South AfricaFoliar application of nitrogen (N) can be essential in improving yield and grain protein content of wheat. Limestone ammonium nitrate and calcium nitrate solution were used as two N top-dressing treatments applied at three growth stages to evaluate their effect... -
Coral reefs of the Glorieuses Islands, western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MH Schleyer --- Oceanographic Research Institute (ORI), South Africa L Bigot --- Laboratoire d’ Écologie Marine Tropicale dans les Océans Pacifique et Indien (ENTROPIE), France Y Benayahu --- School of Zoology, George S. Wise Faculty of Life Sciences, IsraelThe benthic fauna on reefs around the Glorieuses Islands, a small and protected Indian Ocean archipelago northwest of Madagascar, was surveyed in November 2015, focusing particularly on the orders Alcyonacea (soft corals and gorgonians) and Scleractinia (stony corals). The species... -
Dietary analysis across breeding seasons of Eleonora's Falcon Falco eleonorae on the western coast of Algeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sihem Bakour --- Laboratoire de Zoologie Appliquée et d’Écophysiologie Animale, Algeria Riadh Moulaï --- Laboratoire de Zoologie Appliquée et d’Écophysiologie Animale, AlgeriaThe study of the contents of 318 Eleonora's Falcon Falco eleonorae pellets, collected from three islands off the western coast of Algeria, allowed us to identify 134 prey items. These are divided into 55 families, 21 orders and five classes... -
Residual fertiliser and liming impacts in a long-term Acacia mearnsii trial
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Louis Titshall --- , South AfricaSixth rotation growth measurements of an Acacia mearnsii fertiliser trial established to test the effect of nitrogen (N), phosphorus (P), potassium (K) and lime application on growth and bark production, showed that residual P and lime effects are present. First... -
The short-term effects of surface-applied dolomitic lime and gypsum on soil chemical properties and yields of sugarcane ratoon crops in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sandile Siphesihle Mthimkhulu --- , South Africa Dimpho Elvis Elephant --- , South Africa Neil Miles --- , South Africa Louis William Titshall --- , South AfricaThis study investigated the effects of surface-application of lime and gypsum on soil properties and yields of ratoon sugarcane crops. Treatments involved once-off surface application of dolomitic lime (L), gypsum (G) and dolomitic lime plus gypsum (LG) in factorial combination,... -
Effect of lime source, fineness and granulation on neutralisation of soil pH
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Dawid JJ du Toit --- , South Africa Pieter A Swanepoel --- , South Africa Ailsa G Hardie --- , South AfricaLittle information is available regarding the liming efficiency of various local lime sources and products currently available in South Africa. Recently, granulated micro-fine limes are being widely marketed as being superior to class A limes. Therefore, the aim of this... -
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... -
Long-term effects of micro-fine and class A calcitic lime application rates on soil acidity and rooibos tea yields under Clanwilliam field conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jacobus FN Smith --- , South Africa Ailsa G Hardie --- , South AfricaPrevious research on the effect of soil liming on rooibos tea growth was limited to short-term greenhouse trials. This is the first long-term field study to investigate the effect of lime application on rooibos tea production. Micro-fine and class A... -
Liming guidelines for soils under wheat cropping in the eastern Free State, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: HJJ van Zyl --- University of the Free State, South Africa CC du Preez --- University of the Free State, South AfricaSoil acidity hampers the sustainability of wheat production in the eastern Free State, South Africa. Specific guidelines for liming are needed by farmers and advisors to ameliorate this condition. In this study, soils from four representative wheat producing farms were... -
Food insecurity, HIV/AIDS pandemic and sexual behaviour of female commercial sex workers in Lagos metropolis, Nigeria
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: John Lekan Oyefara --- Obafemi Awolowo University, NigeriaThis study examined the role of hunger and food insecurity in the sexual behaviour of female commercial sex workers in Lagos metropolis, Nigeria within the context of HIV/AIDS. In addition, the study investigated the prevalence of sexually transmitted infections (STIs)... -
Assessment of knowledge, attitudes and practices of infant feeding in the context of HIV: A case study from western Kenya
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Juddy Wachira --- Moi University School of Public Health, Kenya Boaz Otieno-Nyunya --- GAP/CDC, Kenya Joyce Beatrice Ballidawa --- Department of Behavioural Sciences, Moi University School of Medicine, Paula Braitstein --- University of British Columbia, CanadaGuidelines for infant feeding options among HIV-positive mothers are changing with informative research. Cultural factors, socialisation processes, gender dimensions and socio-economic status within communities should be considered in recommending feasible and sustainable options. The objective of this study was to... -
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... -
Food insecurity among students living with HIV: Strengthening safety nets at the Nelson Mandela Metropolitan University, South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: L. Steenkamp --- , , South Africa A. Goosen --- , , South Africa D. Venter --- , South Africa M. Beeforth --- , , South AfricaThe HIV prevalence in South Africa among students at higher education institutions (HEIs) in 2008 was reported to be 3.4%, with the highest HIV prevalence found in the Eastern Cape Province. Students at these facilities are also increasingly affected by... -
Calculating soil titratable acidity from routine soil analyses of cultivated South African soils using various model structures
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: VG White --- Citrus Research International, South Africa PJ Raath --- Citrus Research International, South Africa AG Hardie --- Stellenbosch University, South Africa V van der Berg --- Stellenbosch University, South Africa GF Sutton --- Rhodes University, South AfricaSoil titratable acidity (TA) is determined through extraction with an acetate-buffered salt solution (potassium sulphate, K2SO4) and is routinely used to predict the soil lime requirement using the Eksteen method. Soil TA is not always reported by commercial soil testing... -
Comparison of the effectiveness of mined and by-product South African gypsums and other calcium sources for soil sodicity remediation
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marina du Plessis --- Stellenbosch University, South Africa Pieter A Swanepoel --- Stellenbosch University, South Africa Ailsa G Hardie --- Stellenbosch University, South AfricaStudies evaluating the effectiveness of South African gypsum sources are scarce or outdated because of newly introduced products, such as granulated and liquid gypsums. The efficacy of calcium (Ca) nitrate and micro-fine (MF) calcitic limes in comparison to gypsums has... -
Occurrence of contaminants of emerging concern in the uMhlathuze and uThukela river systems, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LR Nsibande --- University of Zululand, South Africa RF Lehutso --- Water Centre, Council for Scientific and Industrial Research, South Africa M Thwala --- Academy of Science of South Africa, South Africa HMM Mzimela --- University of Zululand, South Africa M Seopela --- University of Johannesburg, South Africa NF Masikane --- University of Zululand, South AfricaContaminants of emerging concern (CECs), which include inorganic substances, exhibit potential adverse effects on aquatic life even though they commonly occur at very low concentrations in aquatic resources. The lack of data available about the risk of CECs to the...
