1. CORESTA Meeting, Agronomy/Phytopathology, Oxford, 1995

    The effect of genetic resistance against meloidogyne spp. in tobacco on nematode populations

    BOTHA-GREEFF M.S.; VAN BILJON E.R.; CLAASSEN A.
    ARC, Tobacco & Cotton Research Insitute, Rustenburg, South Africa
    An integrated nematode control research strategy, with the accent on genetic resistance, crop rotation and chemical control, is presently followed at TCRI. Promising tobacco breeding lines with resistance or tolerance against Meloidogyne javanica and M. ...
  2. CORESTA Meeting, Agronomy/Phytopathology, Oxford, 1995

    Using changes in electrical conductivity and sucrose content of flue-cured tobacco leaves to assess ripeness more objectively

    NOLTE C.R.
    Tobacco and Cotton Research Institute, Rustenburg, South Africa
    No objective method to measure ripeness of flue-cured tobacco exists at this stage. Leaf ripeness is still assessed in a subjective manner according to leaf colour. Several factors, such as water logging, under fertilization and cultivar differences can ...