Articles by Author: G K Theron

Search results for G K Theron

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  1. Future Needs of Mycorrhizal Research in South African Forestry

    Item type: Journal Article • Journal: South African Forestry Journal
    The association formed by the short roots of Pinus and Eucalyptus species with mycorrhizal fungi results in increased nutrient absorption and protection from pathogens. Different species of mycorrhizal fungi vary greatly in their effectiveness toward a given host species under...
  2. Die Bemesting van Marramgras (<em>Ammophila arenaria</em>) by die Herwinning van Waaisand in Suidwes-Kaapland

    Item type: Journal Article • Journal: South African Forestry Journal
    Marram grass reacted very favourably to fertilisation with N, P and also K.
  3. Die Invloed van Bemesting op die Groei van Jong <em>Pinus radiata</em>, in Potte met Twee Tipiese Bosbougronde van die Wes-Kaap

    Item type: Journal Article • Journal: South African Forestry Journal
    The effects of N, P and K on Pinus radiata were investigated by growing plants in pots filled with two typical forest soils in the Western Cape. Significant interactions were found. On soil A, a coarse sand from Grabouw, no...
  4. Screening of <em>Pinus radiata</em> Progenies for Resistance to <em>Sphaeropsis sapinea</em>

    Item type: Journal Article • Journal: South African Forestry Journal
    The relative susceptibilities of half-sib progenies of Pinus radiata obtained from seed parents selected for apparent resistance to the pine pathogen Sphaeropsis sapinea in plantations in the Western Cape and Chile were assessed in two separate trials. In each trial,...
  5. An experimental sod seeder

    An experimental sod seeder

    The design and development of an efficient sod‐seeder for the Ngongoni Veld of Natal is described.
  6. The direct and residual effects of the fertilisation of a grass/clover pasture

    The direct and residual effects of the fertilisation of a grass/clover pasture

    The results of a factoral experiment in which various fertiliser treatments were applied to a mixed Paspalum dilatatum and N.Z. wild white clover pasture have indicated that under conditions of complete crop removal, highly significant responses to the application of...
  7. The tensile properties of ten indigenous grasses<sup>1</sup>
               <sup>1</sup>

    The tensile properties of ten indigenous grasses<sup>1</sup> <sup>1</sup>

    A study of the tensile properties of the leaves of ten indigenous grasses as measured in terms of their breaking force and their breaking tension has shown that grasses differ from one another in these properties. In general the tensile...
  8. A study of the factors influencing the breaking tension of the leaves of various grasses<sup>1</sup>

    A study of the factors influencing the breaking tension of the leaves of various grasses<sup>1</sup>

    The relationship between the breaking tension of the leaves of several indigenous grasses and various possible physical and chemical determinants of this property was examined by means of a multiple linear regression analysis. In this analysis a distinction was drawn...
  9. Notes on the adaptability of several tropical legumes to different environments in natal

    Notes on the adaptability of several tropical legumes to different environments in natal

    An account is given of the performance and potential of various tropical legumes when grown in different sub‐tropical environments in Natal and Zululand.