Articles by Author: Ar Morris

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  1. Dry Matter and Nutrients in the Biomass of an Age Series of <em>Pinus patula</em> Plantations in the Usutu Forest, Swaziland

    Item type: Journal Article • Journal: South African Forestry Journal
    The dry matter and nutrient content of 11 stands of Pinus patula, one to 21 years old, were determined by field sampling. Treating these stands as an age series sample of a single yield class the pattern of accumulation with...
  2. Vegetation ordination and classification: Practical implications

    Vegetation ordination and classification: Practical implications

    The main role of vegetation classification in agricultural land utilization is for the planning and management of vegetated areas. For farm planning, rapid, observationally‐based methods are most practical, but for planning at all scales the slower quantitative methods eliminate personal...
  3. Seasonal variation of grassland basal cover

    Seasonal variation of grassland basal cover

    Preliminary results of a long‐term study of seasonal variation in grassland basal cover are presented. Seasonal stability appears to have been taken for granted but has not yet been shown experimentally. The experimental area is situated in the National Botanic...
  4. Effects of certain burning and cutting treatments and fluctuating annual rainfall on seasonal variation in grassland basal cover

    Effects of certain burning and cutting treatments and fluctuating annual rainfall on seasonal variation in grassland basal cover

    The variation in total basal cover from one time of year to another was investigated by means of the bridge and wheel‐point methods over a period of seven years. Treatments were: a control plot, one cut annually in winter and...
  5. Influence of macchia eradication techniques on botanical composition of grasses in the döhne sourveld of the amatole mountains

    Influence of macchia eradication techniques on botanical composition of grasses in the döhne sourveld of the amatole mountains

    Grass communities identified through association‐analysis were used for determining the effects of several methods for eradicating and controlling macchia. Follow‐up burns at three frequencies applied over a ten‐year period to control macchia were found to have masked most differences in...
  6. Plant species dynamics in the Southern Tall Grassveld under grazing, resting and fire

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    An analysis of temporal changes in botanical composition in a long‐term grazing trial indicates that species dynamics in the Southern Tall Grassveld of Natal are determined by the specific combination of grazing, mowing and fire impacts. Species composition of a...
  7. The response of <em>Lolium multiflorum</em> (Lam.) to applied phosphorus and potassium on a cricket pitch clay

    The response of <em>Lolium multiflorum</em> (Lam.) to applied phosphorus and potassium on a cricket pitch clay

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Lolium multiflorum cv. Barmultra was used to evaluate the P and K status of plants grown on a smectitic soil commonly used for the construction of cricket pitches in the coastal regions of South Africa. Bulli was treated with P...
  8. Biological control of <em>Rhizoctonia solani</em> by two <em>Trichoderma</em> species isolated from South African composted soil

    Biological control of <em>Rhizoctonia solani</em> by two <em>Trichoderma</em> species isolated from South African composted soil

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Strains of two Trichoderma species isolated from composted soil were evaluated for biological control of Rhizoctonia solani. Macroscopic observations of in vitro bioassays revealed that the Trichoderma isolates overgrew the pathogen completely and that a brownish discolouration occurred at the...
  9. Terminography in African languages in South Africa

    Terminography in African languages in South Africa

    Item type: Journal Article • Journal: South African Journal of African Languages
    The various ways in which terminologies are being developed in African languages in South Africa are surveyed and the methodological and other problems endemic in the present situation are analysed. Term-development processes such as derivation, semantic transfer, deideophonization, paraphrase, compounding,...