Articles by Author: T T Davies

Search results for T T Davies

We found 59 results for you
  1. A List of <em>Eucalyptus</em> Leaf Fungi and their Potential Importance to South African Forestry

    Item type: Journal Article • Journal: South African Forestry Journal
    Fungi reported from Eucalyptus leaves are tabulated, giving their host species and world geographic distribution. A brief evaluation IS made of the status of the fungi, and also of recent trends in Eucalyptus leaf pathology.
  2. Infection Studies with <em>Phaeoseptoria eucalypti</em> and <em>Coniothyrium ovatum</em> on <em>Eucalyptus</em> spp.

    Item type: Journal Article • Journal: South African Forestry Journal
    Phaeoseptoria eucalypti and Coniothyrium ovatum have recently been associated with leaf lesions on Eucalyptus spp. in South Africa. P. eucalypti caused severe defoliation of E. camaldulensis and E. grandis, prominent lesions on shoots of E. camaldulensis, and retarded the growth...
  3. Pasture problems in South Africa

    Pasture problems in South Africa

    Grassland problems in South Africa are reviewed and the suggestion made that a Pasture Research Institute should be established forthwith to serve South Africa. An holistic approach is needed whereby plant, soil and animal influences are studied as controllable parts...
  4. Effect of Ca, K and B supply on water-stress induced chlorophyll loss from tobacco and cotton leaf discs

    Effect of Ca, K and B supply on water-stress induced chlorophyll loss from tobacco and cotton leaf discs

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A study was made of the influence of Ca:K ratios and B levels on the chlorophyll content of tobacco and cotton leaves grown under glasshouse conditions. Excised leaf discs were floated on a solution of polyethylene glycol 6000 to study...
  5. Effect of Ca, K and B supply on growth of cotton (<em>Gossypium hirsutum</em> L.) and tobacco (<em>Nicotiana tabacum</em> L.)

    Effect of Ca, K and B supply on growth of cotton (<em>Gossypium hirsutum</em> L.) and tobacco (<em>Nicotiana tabacum</em> L.)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effect of Ca:K ratios and B nutrition was investigated using tobacco and cotton grown in Mitcherlich pots with sand. A nutrient solution with three different ratios of Ca:K and two boron levels was used. Treatments were arranged factorially (3...
  6. 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...