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The influence of applied nitrogen on herbage yield and quality of Lolium perenne L. pastures during the establishment year under subtropical conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F.R. McKenzie --- Department of Grassland Science, Republic of South AfricaThe dry matter (DM) yield, cellulase DM disappearance (CDMD) and herbage nitrogen (N) of sheep-grazed perennial ryegrass [Lolium perenne (L.)] during its establishment year was evaluated. Yield and quality were monitored under N applications ranging from 120 to 720 kg... -
The effect of grazing frequency and intensity on the root development of Lolium perenne L. under subtropical conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F.R. Mckenzie --- Department of Grassland Science, Republic of South AfricaThe root organic matter (OM) per unit volume of soil of Lolium perenne L. (perennial ryegrass) was evaluated over two years under subtropical conditions. Root OM was measured on five separate occasions in four soil-depth categories (0–50, 50–100, 100–200 and... -
A preliminary investigation of the potential for maize - legume intercropping in the semi-arid area of Sidamo region, Ethiopia. I. Maize response
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Y.B. Alemseged --- , Australia G.W. King --- , Australia L.R. Coppock --- International Livestock Centre for Africa, Ethiopia J.C. Tothill --- International Livestock Centre for Africa, EthiopiaAn intercropping trial involving four legumes, three maize planting densities and two legume planting times was undertaken at Dembela Wacho in the Sidamo region of Ethiopia during the 1987 growing season. The objective was to explore the potential of intercropping... -
A preliminary investigation of the potential for maize - legume intercropping in semi-arid area of Sidamo region, Ethiopia. II. Legume response
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Y.B. Alemseged --- , Australia G.W. King --- , Australia L.R. Coppock --- International Livestock Centre for Africa, Ethiopia J.C. Tothill --- International Livestock Centre for Africa, EthiopiaAn intercropping trial of maize (Zea mays) with two dual-purpose and two forage legumes was undertaken at Dembela Wacho in the Sidamo region of Ethiopia during the 1987 growing season. The objective was to explore the potential of intercropping in... -
The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 1. Soil nitrogen dynamics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Labuschagne --- , South Africa M.B. Hardy --- Department of Agriculture Western Cape, South Africa G.A. Agenbag --- , South AfricaThe dynamics of soil inorganic-N in reaction to a single, strategic application of fertiliser N were studied during the period 2000 to 2002 in an Oakleaf soil with a clay content increasing from 10 to 30.8% with depth. Soil inorganic-N... -
The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 2. Dry matter production
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Labuschagne --- , South Africa M.B. Hardy --- Department of Agriculture Western Cape, South Africa G.A. Agenbag --- , South AfricaThe response of an irrigated perennial ryegrass-white clover pasture to fertiliser nitrogen application rates of 0, 50, 100 and 150 kg N ha−1 applied in either autumn, early winter, late winter, early spring or late spring was investigated over a... -
The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 3. Clover content
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Labuschagne --- , South Africa M.B. Hardy --- Department of Agriculture Western Cape, South Africa G.A. Agenbag --- , South AfricaThe influence of a single application of fertiliser N (0, 50, 100 and 150 kg N ha−1) applied in either autumn, early winter, late winter, early spring or late spring on the grass-clover balance in a perennial ryegrass-white clover pasture... -
Research note: The influence of applied nitrogen on the root development of Lolium perenne L. one year after establishment
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. Mckenzie --- Department of Grassland Science, Republic of South Africa C.D. Morris --- , Republic of South AfricaThe effect of different levels of applied nitrogen (N) (ranging from 120–720 kg N ha−1 a−1) on the root development of perennial ryegrass (Lolium perenne L.) was examined at the end of the establishment year. Increasing levels of applied N... -
Effect of grazing frequency and intensity on Lolium perenne L. pastures under subtropical conditions: Herbage production
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. Mckenzie --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaThe dry matter (DM) production of Lolium perenne (perennial ryegrass) pastures was evaluated under subtropical conditions for two years, under five combinations of grazing frequency and intensity, each applied in a rotational grazing system. Simulated continuous grazing (CG) was also... -
Effect of grazing frequency and intensity on Lolium perenne L. pastures under subtropical conditions: Herbage quality
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. Mckenzie --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaThe cellulase dry matter disappearance (CDMD) and herbage nitrogen (N) of Lolium perenne (perennial ryegrass) were evaluated for pastures grown under subtropical conditions for two years, under five combinations of grazing frequency and intensity, each applied in a rotational grazing... -
Influence of grazing frequency and intensity on aerial and reproductive tillering in Lolium perenne L. under subtropical conditions
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. McKenzie --- Department of Grassland Science, Republic of South AfricaReproductive and aerial tillering dynamics in Lolium perenne L. (perennial ryegrass) was monitored for two years under grazing. Reproductive tillers were observed from winter (June) to midsummer (February) with the main period of initiation occurring in spring to early summer... -
Influence of single applications of nitrogen on white clover nitrogen fixation in autumn and winter dairy pastures in south‐west Victoria, Australia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. McKenzie --- Department of Natural Resources and Environment, Australia J.L. Jacobs --- Department of Natural Resources and Environment, Australia P. Riffkin --- Department of Natural Resources and Environment, Australia G. Kearney --- Department of Natural Resources and Environment, AustraliaEffects of nitrogen (N) (0, 15, 30, 45 and 60 kg N ha−1) applied at five different times during autumn and early winter on the N fixation of Trifolium repens L. (white clover) in Lolium perenne L. (perennial ryegrass) /... -
Impact of sustained drought on a semi‐arid Colophospermum mopane savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T.G. O'Connor --- Department of Range and Forage Resources, Republic of South AfricaVegetation change on different substrate types was measured over 15 years in semi‐arid Mopani Veld. Baseline data were collected in the terminal year (1982) of a decade of above‐average rainfall, whilst the period of monitoring was characterised by below‐average rainfall,... -
A Psychology of Indigenous Healing in Southern Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen David Edwards --- University of Zululand,Converging lines of evidence from various scientific disciplines consistently point to humanity's African roots. In this context, the term “indigenous healing” is used to refer to universal forms of healing that began in Africa and were developed further both locally... -
Kikuyu over-sown with ryegrass and clover: grazing capacity, milk production and milk composition
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PR Botha R Meeske HA SnymanThe high dry matter yield of kikuyu (Pennisetum clandestinum) under favourable conditions supports high stocking rates and milk production per hectare. However, the quality of kikuyu is generally low and consequently the milk production per cow is also low. The... -
Seasonal dry matter production, botanical composition and forage quality of kikuyu over-sown with annual or perennial ryegrass
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Janke van der Colf --- Department of Plant Production and Soil Science, South Africa Philip R Botha --- Western Cape Department of Agriculture, South Africa Robin Meeske --- Western Cape Department of Agriculture, South Africa Wayne F Truter --- Department of Plant Production and Soil Science, South AfricaThe seasonal growth and low forage quality of kikuyu restrict milk production. The aim of this study was to determine the yield and nutritional value of irrigated kikuyu over-sown with perennial, Italian or Westerwolds ryegrass grazed by dairy cows. The... -
Possible rehabilitation methods of Galenia africana-dominated old lands in the Cederberg Mountains, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nelmarie Saayman --- Directorate Plant Sciences, South Africa Clement Cupido --- Agricultural Research Council–Animal Production Institute, c/o Department of Biodiversity and Conservation Biology, South Africa Hannes Botha --- Western Cape Department of Agriculture, South Africa Rudi Swart --- Western Cape Department of Agriculture, South AfricaSeveral methods to rehabilitate old cropping lands in the Cederberg Mountains were tested to determine what type of soil disturbance, if any, and which of five indigenous perennial plant species are the most successful and economically feasible. Old lands are... -
Effect of temperature on seed production in the invasive grass Glyceria maxima (Hartm.) Holmb. (Poaceae) in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LF Mugwedi --- School of Animal, Plant and Environmental Sciences, South Africa JM Goodall --- School of Animal, Plant and Environmental Sciences, South Africa ETF Witkowski --- School of Animal, Plant and Environmental Sciences, South Africa MJ Byrne --- School of Animal, Plant and Environmental Sciences, South AfricaTemperature is one of the main factors that determine sexual reproduction in terrestrial and emergent aquatic plant species. The effect of temperature on sexual reproduction and seed production of Glyceria maxima (Hartm.) Holmb. in the southern hemisphere is unknown. Glyceria... -
The effect of Holistic Planned Grazing™ on African rangelands: a case study from Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mike Peel --- Agricultural Research Council–Animal Production Unit, South Africa Marc Stalmans --- International Conservation Services, South AfricaHolistic Planned Grazing™ (HPG) is purported to have positive long-term effects on rangelands, enhancing ecosystem services. Given comparable environmental templates, but different management regimes, vegetation monitoring and landscape function analysis showed the Africa Center for Holistic Management (ACHM) at Dimbangombe... -
Drought amnesia: lessons from protected areas in the eastern Lowveld of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mike JS Peel --- , South Africa Izak P Smit --- , South AfricaProtected areas (PAs) adjacent to the Kruger National Park (KNP) are divided into fenced and unfenced properties. We discuss land-use development to provide context of how these savannas have evolved over the past century. Although the PAs have embraced the... -
Cover crop performance in an apple orchard and its effect on the macro-elements and carbon levels in a loamy sand
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johan C Fourie --- , Carolyn L Howell --- , Marde Booyse --- , Kim M Adams --- ,Five treatments were applied in a newly established orchard on a loamy sand near Vyeboom, South Africa. Treatment 1 (T1): chemical control in the tree row from bud break to harvest, with dwarf fescue (Festuca arundinaceae Schreb.) slashed regularly in... -
Spectral classification, mapping and physical habitat implications of a riparian invasion by Tamarix ramosissima Ledeb. in the Touws River, Klein Karoo, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MC Grenfell --- , South Africa TI Dube --- , South AfricaThis paper investigates the invasion of a reach of the Touws River by the deciduous alien tree Tamarix ramosissima Ledeb. (Pink Tamarisk, Saltcedar). The objectives of the paper were to investigate the utility of a delta-normalised difference vegetation index (dNDVI)...