Articles by Keyword: Oryza Sativa

Search results for Oryza Sativa

We found 11 results for you
  1. Comparing macrophyte herbivory by introduced Louisiana crayfish (<em>Procambarus clarkii</em>) (Crustacea: Cambaridae) and native Dytiscid beetles (<em>Cybister tripunctatus</em>) (Coleoptera: Dytiscidae), in Kenya

    Comparing macrophyte herbivory by introduced Louisiana crayfish (<em>Procambarus clarkii</em>) (Crustacea: Cambaridae) and native Dytiscid beetles (<em>Cybister tripunctatus</em>) (Coleoptera: Dytiscidae), in Kenya

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The omnivorous Louisiana crayfish, Procambarus clarkii, has caused significant changes to macrophyte communities worldwide and may have similar negative effects in Kenya if used as a biological control agent for snails harbouring human schistosomes. Here we examine how herbivory by...
  2. Some factors effecting the dry matter production of lucerne cultivars

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Dry matter yields of lucerne cultivars were affected by different factors. A simple equation is given for predicting total dry matter yield of irrigated lucerne based on mean maximum temperatures in January.
  3. Maize as a cover crop for the establishment of perennial pasture legumes in the south‐eastern transvaal

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    In exploratory trials involving the underplanting of the perennial pasture legumes Coronilla varia, Lotus corniculatus and Medicago sativa in maize, the influence of maize density, time of planting of the legume and time of maize removal on legume establishment was...
  4. “n Voorlopige evaluasie van eenjarige, wintergroen weidings met speenlammers, in die Oos‐Kaapse suurveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A preliminary evaluation of annual, wintergreen pastures using weaned lambs in the eastern Cape sourveld. Animal production and feed availability on oats, vetch and oats/vetch pastures were evaluated under continuous grazing, at three stocking rates, using weaned lambs. The oats...
  5. Field reactions of lucerne genotypes to anthracnose and crown rot caused by <em>Colletotrichum trifolii</em>

    Field reactions of lucerne genotypes to anthracnose and crown rot caused by <em>Colletotrichum trifolii</em>

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Nineteen different cultivars and experimental lines of lucerne (Medicago sativa L.) were inoculated with sand-bran cultures of Colletotrichum trifolii Bain & Essary and evaluated for resistance to anthracnose and crown rot under local conditions. The various genotypes differed significantly in...
  6. Comparative response of lucerne (<em>Medicago sativa</em> L.) and sainfoin (<em>Onobrychis viciaefolia</em> Scop.) to applications of P, K and lime

    Comparative response of lucerne (<em>Medicago sativa</em> L.) and sainfoin (<em>Onobrychis viciaefolia</em> Scop.) to applications of P, K and lime

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A pot experiment and an irrigated field trial in which the response of sainfoin and lucerne to different levels of P, K and lime was compared, are described. The results of the pot experiment suggested a better response to lime...
  7. Persistence of atrazine as affected by selected soil properties

    Persistence of atrazine as affected by selected soil properties

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The relationships between selected soil properties and the bioactivity of atrazine (2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine) were investigated in field trials. Bioactivity was determined periodically for up to twelve months on a variety of soil types using oats (Avena sativa L.) as the test...
  8. Influence of temperature during the preceding growth period of lucerne on its regrowth at different temperatures

    Influence of temperature during the preceding growth period of lucerne on its regrowth at different temperatures

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    One-year-old lucerne (Medicago sativa L. cv. ‘Vernal’) plants were grown to first flower through three cuttings in three temperature regimes, H (33°C day/24°C night), W (27718°C) and C (21712°C), to ascertain the influence of temperature preceding defoliation on subsequent growth...
  9. A rapid demonstration of the self-thinning rule using radish

    A rapid demonstration of the self-thinning rule using radish

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The self-thinning rule describes the relationship between individual mass and density in crowded evenly-aged plant populations in which the slope of the relationship is always greater than -1. This study investigated whether the rule could be demonstrated in six weeks...
  10. Productivity evaluation of <em>Medicago sativa</em> cultivars under irrigation in a semi-arid climate

    Productivity evaluation of <em>Medicago sativa</em> cultivars under irrigation in a semi-arid climate

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Many Medicago sativa cultivars are available in South Africa, each with unique characteristics. This study evaluated 26 cultivars under irrigation on two ecotopes in terms of number of cuttings, dry matter (DM) production, seasonal DM production curve, DM production curve...