Articles by Author: L F Vorster

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  1. Die uitwerking van seisoenbeweiding op die bedekking en samestelling van <em>cymbopogon‐themeda</em> veld<sup>1</sup>

    Die uitwerking van seisoenbeweiding op die bedekking en samestelling van <em>cymbopogon‐themeda</em> veld<sup>1</sup>

    Die langtermyn uitwerking van beweiding gedurende vaste seisoene en kombinasies daarvan op sekere plantegroei‐eienskappe van Cymbopogon‐Themedaveld van die Sentrale O.V.S. is ondersoek. Twee veldproewe is uilgevoer wat onderskeidelik deur Merinoskape en Afrikanerbeeste bewei is. Elk van die proewe was ‘n...
  2. The influence of prolonged seasonal defoliation on veld yields

    The influence of prolonged seasonal defoliation on veld yields

    Natural veld of the Dry Cymbopogon‐Themeda veld type was grazed by Africander cattle and Merino sheep during various fixed seasons and all combinations of seasons over a period of ten years. At the termination of the experimental period, the veld...
  3. Die uitwerking van seisoensbeweiding op die infiltrasievermoë van gronde in ‘n <em>cymbopogon‐themedaweld</em>
               <sup>1</sup>

    Die uitwerking van seisoensbeweiding op die infiltrasievermoë van gronde in ‘n <em>cymbopogon‐themedaweld</em> <sup>1</sup>

    Die langtermyn uitwerking van beweiding gedurende vaste seisoene en kombinasies van seisoene, op die infiltrasievermoë van gronde in ‘n Cymhopogon‐Themedaveld in die Sentrale O.V.S., is ondersoek. Twee veldproewe wat onderskeidelik deur Merinoskape en Afrikanerbeeste bewei is, is uitgevoer. Elk van...
  4. Die invloed van aantal kampe en veegetalle op diereproduksie en veld toestand

    Die invloed van aantal kampe en veegetalle op diereproduksie en veld toestand

    Vier wisselweidingstelsels met 3, 6, 12 en 18 kampe per kudde wat varieer van stadige seisoensbeweiding tot vinnige wisselweiding, is onder ‘n ligte (of normale) en swaar belading vanaf 1967 vir sewe jaar vy die Landbounavorsingsinstituut, Glen uitgevoer, Diereproduksie van...
  5. Stock production in the Karoo region

    Stock production in the Karoo region

    The Karoo Region, an arid to semi‐arid extensive small stock grazing area, is described. The main factors concerning stock production are covered. These are elucidated and supported by research data and references. Management aspects and situations generally hampering stock production...
  6. The development of the ecological index method for assessing veld condition in the Karoo

    The development of the ecological index method for assessing veld condition in the Karoo

    The results of a previous study were used for the development of the Ecological Index Method (EIM) of veld condition assessment in the karoo areas. The EIM makes use of a veld benchmark, which must be previously identified and characterised...
  7. Veld of the karoo areas

    Veld of the karoo areas

    The Karoo areas are generally arid to semi‐arid with rainfall varying from less than 100 mm in the west to 400 mm in the east. The topography is mainly flat to undulating and the soils generally shallow and stony. There...
  8. Vegetation change in the karoo

    Vegetation change in the karoo

    Large scale and often radical change has taken place in Karoo vegetation over the past three centuries. This change can be equated with desertification and desertization processes. Change largely embodies the thinning out of the vegetation, decrease or destruction of...
  9. Development of veld management research in the karoo region

    Development of veld management research in the karoo region

    The development of veld research in the semi‐arid Karoo areas since 1934 is outlined. It entailed key experiments on different types of veld, and the synthesis of grazing systems and their testing in experimental camps and co‐operatively on a practical...