Articles by Author: Nelmarie Saayman

Search results for Nelmarie Saayman

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  1. Identifying key grazing indicators to monitor trends in the veld condition of Lambert's Bay Strandveld, South Africa

    Identifying key grazing indicators to monitor trends in the veld condition of Lambert's Bay Strandveld, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Currently, the methods used to assess the veld condition of the Lambert's Bay Strandveld along the West Coast of South Africa require that the operator knows all the plants encountered in the survey area. In this study data were collected...
  2. Livestock grazing has minimal effect on the species richness and diversity of semi-arid shrubland in the Western Little Karoo, South Africa

    Livestock grazing has minimal effect on the species richness and diversity of semi-arid shrubland in the Western Little Karoo, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The Succulent Karoo, one of two arid biodiversity hotspots in the world, is known for its high plant species richness, but little is known about the influence of topography and how it mediates the potentially deleterious effects of grazing. Changes...
  3. Possible rehabilitation methods of <em>Galenia africana</em>-dominated old lands in the Cederberg Mountains, South Africa

    Possible rehabilitation methods of <em>Galenia africana</em>-dominated old lands in the Cederberg Mountains, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Several methods to rehabilitate old cropping lands in the Cederberg Mountains were tested to determine what type of soil disturbance, if any, and which of five indigenous perennial plant species are the most successful and economically feasible. Old lands are...
  4. Evaluation of an undisturbed-soil incubation method as an index of soil nitrogen availability in a limed and non-limed soil

    Evaluation of an undisturbed-soil incubation method as an index of soil nitrogen availability in a limed and non-limed soil

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Nitrogen mineralization potentials were determined using an undisturbed-soil incubation procedure. The purpose of this study was to evaluate the above-mentioned method as an index of soil nitrogen availability. Undisturbed soil samples (0–150 and 150–300 mm) of a limed (pH 7.3)...
  5. Influence of intraspecific competition on seed production of <em>Datura stramonium</em> L.

    Influence of intraspecific competition on seed production of <em>Datura stramonium</em> L.

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Field experiments were conducted during two growing seasons to investigate the effect of different Common thorn-apple (Datura stramonium L.) densities on seed production of this specie. Maize (Zea mays L.) was planted in 2.1 m rows with a plant population...
  6. Effect of plant density, weed-crop interference and water stress on seed germination of <em>Datura stramonium</em> L.

    Effect of plant density, weed-crop interference and water stress on seed germination of <em>Datura stramonium</em> L.

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Field experiments were conducted during two growing seasons to determine the effect of different common thorn-apple (Datura stramonium L.) densities on seed germination. The study provided information on the implications of weed and weed seed infestation, where no weed control...
  7. Phytotoxicity of seven graminicides on maize

    Phytotoxicity of seven graminicides on maize

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Phytotoxicity of single and double dosages of metolachlor, dimethenamid, acetochlor A and B, alachlor, flufenacet and a mixture of atrazine-sulcotrione, were evaluated on maize (Zea mays L.) in a greenhouse, using soil with a clay content of less than 10%...
  8. Phytotoxicity resulting from a combination of a pre-emergence herbicide and a pesticide seed dressing in maize (<em>Zea mays</em> L.)

    Phytotoxicity resulting from a combination of a pre-emergence herbicide and a pesticide seed dressing in maize (<em>Zea mays</em> L.)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    This study was prompted by reports from maize producers, indicating phytotoxicity to occur when using pre-emergence herbicides in combination with seed dressings under cold conditions on sandy soils. A greenhouse experiment was conducted in which the insecticide imidacloprid and the...
  9. Efficacy and phytotoxicity of simazine and terbuthylazine on lupins

    Efficacy and phytotoxicity of simazine and terbuthylazine on lupins

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A need exists for more effective control of broad leaf weeds in lupins (Lupinus albus L., L. angustifolius L. and L. luteus L.) in South Africa. In this study simazine and terbuthylazine which are used with success elsewhere, were evaluated...
  10. Phytotoxicity resulting from pre-emergence graminicides in sorghum

    Phytotoxicity resulting from pre-emergence graminicides in sorghum

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    This study was prompted by sorghum (Sorghum bicolor (L.) Moench) producers reporting phytotoxicity when using graminicides under unfavourable environmental conditions. A greenhouse experiment was conducted in which five graminicides were evaluated at two temperature regimes, using 10 cultivars. Registered dosage...