Articles by Keyword: Sex Ratio

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  1. Yield and morphological responses of a forage sorghum to mefluidide

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Due to rapid growth, stem build‐up in forage sorghum crops often leads to considerable wastage by animals and consequent loss of production. In this study the potential of the chemical plant growth regulator, mefluidide, for modifying the morphology of forage...
  2. Growth analysis of <em>themeda triandra</em> and <em>sporobolus fimbriatus</em> tillers in semi‐arid grassveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Marked populations of Themeda triandra and Sporobolus fimbriatus tillers were sequentially harvested at fortnightly intervals both under irrigation and under unamended moisture conditions. Sampling covered a period from tiller initiation through to senescence after flowering.
  3. Physical and clay mineralogical properties of some Natal and eastern Transvaal soils

    Physical and clay mineralogical properties of some Natal and eastern Transvaal soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Soils, collected from the south-eastern Transvaal, Natal north coast and the more arid areas of the Natal interior, were examined using physical, chemical and mineralogical methods. Most of the soils were associated with particular management problems such as poor internal...
  4. Effect of exchangeable sodium and phosphogypsum on the hydraulic properties of several South African soils

    Effect of exchangeable sodium and phosphogypsum on the hydraulic properties of several South African soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The susceptibility of soils to the deleterious effects of sodicity was assessed for samples which varied with respect to physical, mineralogical and other properties. For this purpose soil samples were collected from different locations in South Africa. The effect of...
  5. Die rol wat nitraat: ammoniumverhoudings speel in die effektiewe benutting van stikstof by <em>Zea mays</em> L.

    Die rol wat nitraat: ammoniumverhoudings speel in die effektiewe benutting van stikstof by <em>Zea mays</em> L.

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die invloed van verskillende nitraat: ammoniumverhoudings by sub- en supra-optimale stikstofkonsentrasies op die opname en benutting van stikstof is ondersoek. Effektiewe stikstofbenutting is in terme van saadopbrengs per eenheid opgeneemde stikstof gemeet. Die beste nitraat: ammoniumverhouding was 3:1 by 100...
  6. Factors affecting fruit quality and shelf life of Bon Chretien pears

    Factors affecting fruit quality and shelf life of Bon Chretien pears

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Bon Chretien pears for canning and the fresh market are grown under various climatic conditions in South Africa. The major orchard factor affecting the shelf life of the fruit after storage seems to be the number of days between full-...
  7. Invloed van nitraat:ammoniumverhoudings op die ontwikkeling van <em>Zea mays</em> L.

    Invloed van nitraat:ammoniumverhoudings op die ontwikkeling van <em>Zea mays</em> L.

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die invloed van drie nitraat:ammoniumverhoudings by twee stikstofkonsentrasies op planteienskappe is met blomtyd en na fisiologiese volwassenheid vir suiwerlyne gemeet. 'n Kwartssandkultuur is as groeimedium in 'n glashuis gebruik. Toenemende NH4 +-verhoudings het planthoogtes, blaaroppervlaktes en droëmateriaalproduksie van verskillende plantkomponente...
  8. Die relatiewe belang van die vorm en konsentrasie van stikstof in die wortelsone op die ontwikkeling van <em>Zea mays</em> L.

    Die relatiewe belang van die vorm en konsentrasie van stikstof in die wortelsone op die ontwikkeling van <em>Zea mays</em> L.

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die invloed van ses nitraat:ammoniumverhoudings by 200 mg N l1 in een proef en twee ander verhoudings by 50, 100 en 200 mg N l1 in 'n tweede proef is op droëmateriaalproduksie en stikstofinhoud ondersoek. Die algehele beste behandeling was...
  9. The effect of chloride on four different citrus rootstocks

    The effect of chloride on four different citrus rootstocks

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Seedlings of Troyer citrange [Poncirus Mollata L. Raf. × Citrus sinensis L. Osbeck] (Tro), Citrus volkameriana (Vol), Carrizo citrange [Poncirus trifoliata L. Raf. × Citrus sinensis L. Osbeck], (Car) and Rough lemon [Citrus jambhiri Lush.] (Rie) were tested for tolerance...
  10. Effects of <em>Casuarina-</em>amended soil on selected soil and citrus properties

    Effects of <em>Casuarina-</em>amended soil on selected soil and citrus properties

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Effects of beefwood (Casuarina cunninghamiana Miq.) leaf residues were evaluated on soil pH, soil electrical. conductivity, growth and foliar nutrient ions of rough lemon (Citrus jambhiri Hush) seedlings in two greenhouse experiments. Casuarina- amended soil reduced soil pH, root weight,...