Articles by Keyword: Self Assessment

Search results for Self Assessment

We found 166 results for you
  1. The effect of stocking rate and lick supplementation on the performance of lactating beef cows and its impact on Highland Sourveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The Highland Sourveld of Natal is an important beef producing area. Although it covers only 13% of the total area of the province, it supports 18% of the beef cattle population.
  2. Ecological status of species on grazing gradients on the shallow soils of the western grassland biome in South Africa

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Grasses on the shallow soils of the western grassland biome of South Africa were classified on their ecological status on the basis of their reaction to grazing. Vegetation data were gathered in such a way that those of different successional...
  3. The development of veld assessment in the northern Transvaal savanna I. Red Turfveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Grazing‐induced gradients in pasture species composition were characterized for the red turfveld of the Northern Transvaal savanna. A proposed classification of pasture species response to grazing was developed and the influence of state variables and driving forces other than grazing...
  4. The development of veld assessment in the northern Transvaal savanna II. Mixed bushveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Differences in pasture species composition as a consequence of grazing were used to develop a proposed classification of pasture species response to grazing, for both the Combretum apiculatum and the Acacia tortilis communities of the northern Transvaal mixed bushveld. The...
  5. Towards visual assessment of succulent valley bushveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Visual vegetation assessment was tested for repeatability and accuracy and compared with an objective survey technique for time and cost efficiency. Eighteen operators first inspected a range of sites where ecological status was known. Using these for reference, they then...
  6. An alternative approach to veld condition assessment in the non‐grassveld regions of South Africa

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Traditional veld condition assessment methods score veld either in terms of its ‘state of health’ or its value for a specific land‐use objective. This is problematic and we propose that ‘veld condition’ should simply be a descriptive index, devoid of...
  7. Range monitoring in South Africa: A broad perspective

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Range monitoring is defined, in the context of this paper, as regular surveillance to establish whether properties of the range are changing. The objective of such monitoring is therefore to establish whether temporal changes are taking place in response to...
  8. Plant population and cultivar effects on yield losses caused by the maize stalk borer, <em>Busseola fusca</em> (Lepidoptera: Noctuidae)

    Plant population and cultivar effects on yield losses caused by the maize stalk borer, <em>Busseola fusca</em> (Lepidoptera: Noctuidae)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Maize plants were subjected to controlled infestations of Busseola fusca (Fuller). Variations in inter- and intra- row spacing had a pronounced influence on the damage caused by the pest. Both the rates of dispersal and the survival of the larvae...
  9. A drought assessment model for Karoo rangeland

    A drought assessment model for Karoo rangeland

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The KAROO drought assessment model simplifies veld growth responses to rainfall variability by simulation of the growth and dieback of a hypothetical plant species. Soil water content is treated as a simple weighting factor which determines the plant's growth rate...
  10. Estimation of water use by red grass (<em>Themeda triandra</em> Forssk.) growing in shallow soils: toward a method of on-farm drought assessment

    Estimation of water use by red grass (<em>Themeda triandra</em> Forssk.) growing in shallow soils: toward a method of on-farm drought assessment

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    This study was prompted by the need of stock farmers without access to computers for a simple on-farm drought assessment method as an aid in management decision making with respect to stock numbers in times of drought. It is proposed...