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Preferential utilization of pans by springbok (Antidorcas marsupialis)
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: S.J. Milton --- FitzPatrick Institute, Republic of South Africa W.R.J. Dean --- FitzPatrick Institute, Republic of South Africa C.P. Marincowitz --- , Republic of South AfricaForage utilization by springbok in pans and surrounding habitats was compared at one karroid shrubland site and two desert grassland sites and was found to be greater in pans than on adjacent plains and dunes. Springbok used pan areas for... -
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... -
Behaviour of sesquioxic clay soils subjected to alkaline and saline effluents
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.G. Thompson --- ,The effects of disposal of alkaline and saline effluents on sesquioxic red clay soils have been monitored for many years on a site in the eastern Transvaal. Recently a high chloride content effluent with a sodium adsorption ratio (SAR) of... -
Anorganiese stikstof in mieliegronde van die Oranje-Vrystaat en Transvaal met planttyd, 1984
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-Afrika R. du T. Burger --- Departement van Grondkunde, Republiek van Suid-AfrikaOndersoek is ingestel na die hoeveelheid anorganiese stikstof wat met planttyd gedurende die 1984/85-seisoen in mieliegronde van die Oranje-Vrystaat en Transvaal teenwoordig was. By 82 lokaliteite, wat verspreid oor hierdie gebied voorkom, is grondmonsters ingesamel. Grondmonsters is op 300 mm... -
Sodicity phenomena in red sesquioxic clay subsoils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.G. Thompson --- ,Monitoring for many years of the soils of an effluent disposal site in the eastern Transvaal has shown that the disposal of alkaline and saline effluents on red sesquioxic clays has not appreciably affected soil permeability but has brought about... -
Effect of application methods on ammonia volatilization from soils in a controlled environment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.C. du Preez --- Department of Soil Science, Republic of South Africa R. du T. Burger --- Department of Soil Science, Republic of South AfricaThe objective of this investigation was to compare different application methods whereby ammonia losses from nitrogen fertilizers can be limited when applied to alkaline soils. Three application methods were simulated, namely broadcasting, ploughing under and band placement. Five nitrogen fertilizers,... -
Improving the isolation of actinomycetes from soil by high-speed homogenization
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. A.W. Baecker --- Department of Microbiology and Plant Pathology, Faculty of Agriculture, Republic of South Africa K.C. Ryan --- Department of Statistics and Biometry, Faculty of Science, Republic of South AfricaQuantitative isolation of actinomycetes from five South African soils with different physical and chemical properties was conducted by hammer-mill comminution followed by high-speed liquid homogenization of resultant soil particles using a shaft homogenizer. Soil homogenates were serially diluted and plated... -
A comparison beween short-term chemical and biological methods to measure phosphorus availability in sludge-amended sesquioxic soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.J. McLaughlin --- , Republic of South AfricaDue to the transformations which sludge undergoes after addition to soil, single measurements of P availability are of little value in soils which have recently received additions of sewage sludge. This study assessed six procedures on two soils—a clay of... -
'n Vergelyking van verskillende metodes vir die ekstraksie en bepaling van aluminium in grond
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mardel Pretorius --- Hoëveldstreek, Departement van Landbou en Watervoorsiening, Republiek van Suid-Afrika D.J. Beukes --- Hoëveldstreek, Departement van Landbou en Watervoorsiening, Republiek van Suid-AfrikaVier metodes vir die ekstrahering en bepaling van Al in suur gronde is vergelyk vir grondmonsters vanaf 'n verskeidenheid van bronne en met pH (KCl) waardes tussen 3,3 en 4,4. Die oogmerk was om 'n vinnige, eenvoudige, maar steeds betroubare... -
Amino acids in eight South African topsoil samples
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. D.P. Botha --- , Republic of South Africa M.F. Philpott --- , Republic of South Africa M.J. van der Merwe --- , Republic of South AfricaAmino acids were determined by gas chromatography after acid hydrolysis in eight South African topsoil samples. Total amino acid nitrogen in these samples varied from 11% to 47% of total soil-N. A difference in relative proportions of the amino acids... -
Kinetika van nitrifikasie in gronde van die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Laubscher --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie verloop van nitrifikasie is in agt gronde, afkomstig van die sentrale besproeiingsgebiede, gemonitor na toediening van (NH4)2SO4 teen die ekwivalent van 100 kg N ha−1 aan beide die bo- en ondergronde. Tydens inkubasie by 30°C is die NH4 +,... -
Die verwantskap tussen maksimum nitrifikasietempo en relevante eienskappe van gronde vanaf die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Laubscher --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie oogmerk van die studie was om die verwantskappe tussen maksimum nitrifikasietempo (Kmaks) en relevante eienskappe van die gronde vanaf die sentrale besproeiingsgebiede uit te wys. Die verloop van nitrifikasie is in agt gronde, afkomstig van die gebiede, gemonitor na... -
Lime-phosphorus interactions in the growth of temperate pasture species on highly-weathered soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. Miles --- Department of Agricultural Development, Republic of South Africa R.J. Eckard --- Department of Agricultural Development, Republic of South AfricaLime and phosphorus (P) requirements for the growth of temperate pasture species on acid, well-drained soils in the Natal Midlands were evaluated in factorial field trials. Species studied were white clover (Trifolium repens), tall fescue (Festuca arundinacea) and Italian ryegrass... -
Soil and plant potassium optima for maize on a kaolinitic clay soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. P.W. Farina --- , Republic of South Africa P. Channon --- , Republic of South Africa G.R. Thibaud --- , Republic of South Africa J.D. Phipson --- , Republic of South AfricaIn South Africa, there is an extreme paucity of information relating maize (Zea mays L.) yields to soil and plant K levels and most K fertilizer recommendations are highly subjective. Controversy also surrounds the practice of relating K fertilizer recommendations... -
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... -
Improved criteria for classifying hydric soils in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.C. Kotze --- Department of Grassland Science, Republic of South Africa J.R. Klug --- Department of Grassland Science, Republic of South Africa J.C. Hughes --- Department of Agronomy, Republic of South Africa C.M. Breen --- , Republic of South AfricaThere is an increasing awareness of the ecological and agricultural importance of hydric (wetland) soils. Because of the scarcity of information in South Africa, this study aimed to critically examine systems currently being applied to the hydric soils of South... -
Water-holding capacity of rock fragments in rehabilitated opencast mine soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Schoeman --- , South Africa M.M. Kruger --- , South Africa A.H. Loock --- , South AfricaThe water-holding capacity of rock fragments sampled from spoil materials underlying rehabilitated opencast coal mine soils was determined. Four rock types, ranging from grit and coarse sandstone to carbonaceous shale, and four fractions of different size were investigated by means... -
Clay-substrate application to sandy open-cast mine soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G. Reuter --- Department of Soil Science and Plant Nutrition, GermanyThe review gives some insight into the objective of amelioration to improve fertility of sandy soils. The research concept is based on the high water and cation exchange capacity of clay minerals. Technological and economic problems as well as practicable... -
Nitrogen fixation and biomass productivity of indigenous legumes for fertility restoration of abandoned soils in smallholder farming systems
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H. Nezomba --- , Zimbabwe T. P Tauro --- , Zimbabwe F. Mtambanengwe --- , Zimbabwe P. Mapfumo --- , ZimbabweMost legume-based soil fertility technologies often fail to make the desired impact on nutrient-depleted soils partly due to low N2-fixation rates and poor biomass productivity. A study was conducted in the 2004/05 and 2005/06 rainfall seasons to evaluate biomass productivity... -
Agricultural suitability of dune system and Limpopo Basin soils near Xai-Xai, Mozambique
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. Brandt --- , Germany R. Bäumler --- , Germany C Samimi --- , AustriaQuaternary dune systems, as well as the Limpopo Basin near the rural city of Xai-Xai in southern Mozambique were studied concerning their soil fertility and sustainability for crop cultivation. Due to population growth, most sites, which are not overbuilt, are... -
THE INFLUENCE OF P-RETENTION BY SOILS AND SEDIMENTS ON THE WATER QUALITY OF THE LIONS RIVER
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: H.D. Furness C.M. BreenThe soils of Midmar dam catchment and the sediments of the Lions river are shown to have high P-retention properties. Present conditions result in little leaching of PO4 −4 from the soils and favour a net transport of P from... -
Effects of fire, bruchid beetles and soil type on germination and seedling establishment of Acacia drepanolobium
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B.D. Okello T.P. YoungThe effects of fire, bruchid seed beetles and soil type on the germination and seedling establishment of Acacia drepanolobium were experimentally investigated. Seeds subjected to three seed treatments (bruchid damaged, bruchid-free burnt, and bruchid-free unburned) were germinated in three different... -
Effects of season and frequency of burning on soils and landscape functioning in a moist montane grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AD Manson D Jewitt AD ShortThe effects of burning on soil properties and landscape function were investigated in a long-term experiment comparing different burning strategies in a moist montane grassland. Total C, total N, total S, bulk density, plant-available nutrients, and soil acidity were determined... -
Bushclump-grass interactions: influence of bushclumps on their local environment in a south-east African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L.C. Jarvel T.G. O'ConnorThe interaction between multi-species bushclumps and the herbaceous layer was investigated in a mesic Eastern Cape bushclump savanna. Bushclumps had a moderating effect on their microclimate when compared with the open grassland: lower maximum and higher minimum temperatures. higher humidity... -
The impact of the addition of Eucalyptus grandis wood chips on nitrogen availability in plantation soils
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: TheresaL. Bird --- School of Animal, Plant and Environmental Sciences, MaryC. ScholesThe impact of plantation residues, as a result of clearfelling, on nutrient availability in plantation systems, as well as the difficulties during subsequent planting and harvesting, should be considered in the development of plantation management strategies. The aim of this... -
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... -
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... -
Wetland hydrology indicators of Maluti Mountains wetlands in Lesotho
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Botle E Mapeshoane --- Department of Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South AfricaHydric soil morphological features are generally accepted to be reliable indicators of wetland hydrology. The relationship between soil water saturation and soil morphological indices is evaluated in this study from bi-weekly water level data taken over a period of two... -
A new species of Scolecoseps (Reptilia: Scincidae) from coastal north-eastern Mozambique
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Luke Verburgt --- , , South Africa Ursula K. Verburgt --- , , South Africa William R. Branch --- , South AfricaSeven specimens of Scolecoseps Loveridge, 1920 from the vicinity of Palma on the north coast of Mozambique are compared morphologically with other known material of this genus. The new material can be distinguished morphologically from all other Scolecoseps by the... -
Soil taxonomy proposals for acid sulfate soils and subaqueous soils raised by the 8th International Acid Sulfate Soils Conference
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Barret M Wessel --- Department of Environmental Science and Technology, USA John M Galbraith --- Department of Crop and Soil Environmental Sciences, USA Mark H Stolt --- Department of Natural Resources Science, USA Martin C Rabenhorst --- Department of Environmental Science and Technology, USA Delvin S Fanning --- Department of Environmental Science and Technology, USA Maxine J Levin --- USDA-Natural Resources Conservation Service, USAThe 8th International Acid Sulfate Soils Conference presented examples and discussions for classification of ‘acid sulfate soils’ and related issues for ‘subaqueous soils’. When these soils are disturbed or exposed, the sulfides (predominantly pyrite) react with oxygen to produce sulfuric... -
Evaluating parents for cane yield in sugarcane breeding using best linear unbiased prediction analysis of progeny data derived from family plots
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ntombokulunga W Mbuma --- South African Sugarcane Research Institute, South Africa Marvellous Zhou --- South African Sugarcane Research Institute, South Africa Rouxlene van der Merwe --- Department of Plant Sciences, South AfricaThe success of sugarcane breeding is determined by the choice of parents, crosses made and progeny testing. The objectives of this study were to use best linear unbiased prediction (BLUP) to evaluate parents using progeny data obtained from family plots... -
The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elise Nghalipo --- Department of Agriculture and Natural Resources Sciences, Namibia Dave Joubert --- Department of Agriculture and Natural Resources Sciences, Namibia Heather Throop --- School of Earth and Space Exploration and School of Life Sciences, USA Alexander Groengroeft --- Institute of Soil Science, GermanyFire is an integral part of savanna ecosystems that has shaped these systems since the Miocene. Substantial uncertainty about fire effects in semi-arid ecosystems exists. Fire may affect ecosystem productivity directly through nutrient volatilisation, increased mineralisation and altering organic matter... -
Characterisation of the soil pore system in relation to its hydraulic functions in two South African aeolian soil groups
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Achamyeleh G Mengistu --- Department of Soil, Crop and Climate Sciences, South Africa Sabelo SW Mavimbela --- Department of Soil, Crop and Climate Sciences, South Africa Leon D van Rensburg --- Department of Soil, Crop and Climate Sciences, South AfricaThe characterisation of soil pores has a prime importance in soil hydrology particularly for soil water management in both irrigated and dryland agriculture. Hence, this study describes the soil pore system in the Clovelly and Hutton soil forms and its... -
Nutrient status of sandy soils in smallholder areas of Zimbabwe and the need to develop site-specific fertiliser recommendations for sustainable crop intensification
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Gabriel Soropa --- Department of Environmental Sciences and Technology, Zimbabwe Justice Nyamangara --- Department of Environmental Sciences and Technology, Zimbabwe Ermson Z Nyakatawa --- Department of Crop Science and Post Harvest Technology, ZimbabweSustainable crop intensification in sub-Saharan Africa cannot be achieved if farmers cultivate inherently infertile soils that are deficient in key essential nutrients, such as nitrogen and phosphorus. Most smallholder farmers in sub-Saharan Africa are resource-constrained and apply suboptimal fertiliser amounts,... -
A comparison of the results of phosphorus analyses of alkaline and calcareous soils amongst South African laboratories
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AE Venter --- , South Africa CC du Preez --- , South AfricaLarge areas of alkaline and calcareous soils are irrigated in South Africa. For these soils, proper fertilisation programs based on soil phoshorus (P) analyses are required. Little is known about P analyses of alkaline and calcareous soils. The study aimed... -
Organic carbon content in the diagnostic horizons and materials of South African soil forms
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- , South Africa NR Rantoa --- , South Africa CC du Preez --- , South AfricaSoil classification aims to group similar soils to facilitate communication and management. Management of soil organic carbon is gaining international recognition in an attempt to manage atmospheric carbon in addressing global warming. This paper explored the soil morphological and analytical... -
Forage legumes from the Mediterranean Fynbos biome of South Africa with potential for domestication: slope aspect affects tissue fibre and mineral composition
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Samson BM Chimphango --- , South Africa Luke H Gallant --- , South Africa M Igshaan Samuels --- , South Africa Odette E Curtis-Scott --- , South Africa A Muthama Muasya --- , South Africa Clement Cupido --- , South Africa James S Boatwright --- , South Africa John Howieson --- , AustraliaFabaceae plants contribute greatly to a high quality of pasture in rangelands, because of high levels of protein in their tissues. Despite this established importance, only a few southern African legumes have been evaluated for nutritional value and domestication. The... -
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... -
Biomass production and nutritional efficiency in short rotation eucalypt clone plantations for energy in north-east Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Welluma Teixeira Barros --- State University of Southwest Bahia, Brazil Patrícia Anjos Bittencourt Barreto-Garcia --- State University of Southwest Bahia, Brazil Valdemiro da Conceição Júnior --- State University of Southwest Bahia, Brazil Marcos Gervasio Pereira --- Federal Rural University of Rio de Janeiro, Brazil Paulo Henrique Marques Monroe --- State University of Southwest Bahia, Brazil Maicon dos Santos da Silva --- São Paulo State University, Brazil Mariana dos Santos Nascimento --- State University of Southwest Bahia, Brazil Jaqueline Lima Morais --- State University of Southwest Bahia, BrazilSelecting adapted hybrids with greater efficiency in the use and return of nutrients is essential to ensure the success of forestry activities. Although topics on the nutritional sustainability of eucalypt biomass harvesting have frequently been discussed, few studies have focused... -
Phosphorus sorption kinetics in calcareous soils of selected arid and semi-arid toposequences and its relationship with plant growth
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Jafari --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran H. Shariatmadari --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran Y. Rezainejad --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran Sh. Ghalami --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, IranAn array of kinetic equations has been used to describe time-dependent sorption of P by soils. We investigated P sorption kinetics in calcareous soils at upper-, mid-, and lowerslope positions of two arid and two semi-arid landscapes and its relationship... -
Comparison of rehabilitation methods on mechanically reconstructed soils following strip coal mining activities: effects on grass properties
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: DJ Beukes --- ARC-Soil, Climate and Water, South Africa LD Wiese --- ARC-Soil, Climate and Water, South Africa MV Kidson --- ARC-Soil, Climate and Water, South Africa F Breytenbach --- ARC-Livestock Business Division,Opencast coal mining has devastated the grassland biomes in the Mpumalanga Province of South Africa. A rain-fed rehabilitation trial on mechanically reconstructed soil, following strip coal mining, was conducted to demonstrate that the post-mining landscape can be returned to sustainable...