Articles by Keyword: Competition

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  1. The Impact of Weeds and Two Legume Crops on <em>Eucalyptus</em> Hybrid Clone Establishment

    Item type: Journal Article • Journal: South African Forestry Journal
    The relative competition imposed on Eucalyptus hybrid clone GC304 grown from establishment with either complete weed cover, intra-row weeds, inter-row weeds or legume cover crops of Mucuna pruriens and Vigna sinensis is under study in a field experiment on a...
  2. The influence of an <em>Acacia karroo</em> tree on grass production in its vicinity

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The investigation was concerned with the impact of an Acacia karroo tree on the productivity of the surrounding herbaceous layer.
  3. Browse and herbage production in the eastern cape thornveld in response to tree size and defoliation frequency

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Grass yields in this semi‐arid savanna declined as the size of Acacia karroo increased. Browse yields, however, did not increase as trees grew out beyond 1,8 m in height and it follows that if bush thinning is required, then the...
  4. Evapotranspirasie in drie plantgemeenskappe van ‘n <em>Rhigozum trichotomum</em> habitat te upington

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Evapotranspirasie in drie plantgemeenskappe van ‘n R. trichotomum habitat, naamlik, suiwer gras, suiwer R. trichotomum en ‘n gemengde stand van R. trichotomum en gras is gedurende die 1985–86 groeiseisoen bestudeer. Drie persele van elke plantgemeenskap is hidrologies geisoleer, besproei en...
  5. Effect of nitrogen application, seeding rate and defoliation height on mixtures of <em>Trifolium vesiculosum</em> cv Amclo and <em>Lolium multiflorum</em> cv Midmar: I. dry matter production, crude protein content and crude protein production*

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The interaction between Trifolium vesiculosum cv Amclo and Lolium multiflorum cv Midmar was measured in a field trial, in terms of dry matter production, crude protein content and crude protein production. The treatments included in the field trials were five...
  6. Plant relations in mixtures of <em>trifolium subterraneum</em> cv mt barker and <em>loliumm ultiflorum</em> cv Midmar: I. dry matter production, crude protein content and crude protein production

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The interaction between Trifolium subterraneum cv Mt Barker and Lolium multiflorum cv Midmar was measured in a field trial in terms of dry matter production, crude protein content and crude protein production. The treatments included five different seeding rates of...
  7. Quantitative description of woody plant communities: Part I. An approach

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Various descriptive units for woody plant communities are proposed. These are the Evapotranspiration Tree Equivalent (ETTE), Browse Tree Equivalent (BTE) and Canopied Subhabitat Index (CSI), which describe the status of a woody community in terms of potential moisture use, value...
  8. A preliminary account of growth characteristics and seed germination of <em>Cassia mimosoides</em> L. in Dohne Sourveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    An autecological study of Cassia mimosoides L., which invades mismanaged Dohne Sourveld, was initiated at the Agricultural Research Institute, Dohne. A study of the growth characteristics revealed that the nature of the root distribution enabled the plant to take up...
  9. Die invloed van stikstoftoediening, saaidigtheid en metode van vermenging van komponente op mengsels van <em>Trifolium vesiculosum</em> en <em>Lolium multiflorum</em> <sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The influence of nitrogen application, seeding rate and methods of mixing of components on mixtures of Trifolium vesiculosum and Lolium multiflorum. The interaction between Trifolium vesiculosum cv. Amclo and Lolium multiflorum cv. Midmar in mixtures was measured in an irrigated...
  10. Plant relations in mixtures of <em>Trifolium subterraneum</em> cv. Mt Barker and <em>Lolium multiflorum</em> cv. Midmar: II. Yield advantage as reflected in the Land Equivalent Ratio

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Land Equivalent Ratios (LER) were calculated for mixtures of Trifolium subterraneum and Lolium multiflorum in terms of dry matter production and crude protein production. This ratio denotes the yield advantage, if any, of a specific mixture against the pure stands...