Articles by Keyword: Semi Arid Zones

Search results for Semi Arid Zones

We found 73 results for you
  1. Loss of nitrogen fertility and its restoration in some Orange Free State soils

    Loss of nitrogen fertility and its restoration in some Orange Free State soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effects of present or past cultivation on nitrogen fertility in some central Orange Free State soils were investigated by the comparison of paired samples of cultivated or reverted soils with uncultivated soils situated as closely as possible to one...
  2. Silages in the form of diet based on spineless cactus and buffelgrass

    Silages in the form of diet based on spineless cactus and buffelgrass

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    This study was conducted to evaluate the fermentation pattern and the in situ dry matter degradability of silages in the form of diet. Five diets were formulated based on spineless cactus (Opuntia fícus-indica cv. ‘Gigante’) and buffelgrass (Cenchrus ciliaris). The...
  3. Multi‐species wild herbivore systems vs. domestic single species systems: A comparison of net animal productivity

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Short and medium term net annual harvested animal production is compared for six areas situated in the semi‐arid bushveld of north eastern Natal. The landuse on these areas was conservation, commercial game ranching and commercial cattle ranching. The objectives of...
  4. Growth and desiccation of <em>Themeda triandra</em> and <em>Sporobolus fimbriatus</em> in relation to diminishing moisture availability

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Water was withheld from individual plants of Themeda triandra and Sporobolus fimbriatus growing in pots in a greenhouse. Leaf extension growth, followed by successive degrees of tiller desiccation, were monitored on a daily basis and related to diminishing moisture availability...
  5. The Potch System: An approach to the management of semi‐arid grasslands in southern Africa

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A host of grassland management systems have been published and recommended. Whereas earlier approaches to grassland management emphasized the systematic resting aspect, the systems published since 1966 have tended to stress the degree of utilization of the grassland sward. In...
  6. Nitrogen mineralization, nitrification and nitrogen balance in laboratory incubation of soil from natural grassland in the central Orange Free State

    Nitrogen mineralization, nitrification and nitrogen balance in laboratory incubation of soil from natural grassland in the central Orange Free State

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Air-dried soil from three layers under grassveld was moistened by the addition of 12 levels of water and incubated for up to two years at five temperatures in screw-capped preserving jars with an air-filled head- space equivalent to seven times...
  7. A preliminary investigation of the potential for maize - legume intercropping in the semi-arid area of Sidamo region, Ethiopia. I. Maize response

    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
    An 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...
  8. A preliminary investigation of the potential for maize - legume intercropping in semi-arid area of Sidamo region, Ethiopia. II. Legume response

    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
    An 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...
  9. Development of a simple empirical model for predicting maize yields in a semi-arid area

    Development of a simple empirical model for predicting maize yields in a semi-arid area

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A yield prediction model is necessary, together with long-term climate data, to calculate the long-term yields needed for making a quantitative productivity evaluation of a crop ecotope in the form of a cumulative probability function (CPF). In this study the...
  10. Evaluating the maize production potential of a semi-arid ecotope with four production techniques

    Evaluating the maize production potential of a semi-arid ecotope with four production techniques

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Water conservation production techniques are needed to boost crop production in semi-arid areas. The in-field rainwater harvesting (IRWH) technique has been developed for this purpose, and found to be successful on clay and duplex soils, but has not yet been...