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85 results

  1. CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, AP55

    Integrated nematode control on tobacco in South Africa: present status

    BOTHA-GREEFF M.S.; VAN BILJON E.R.; DIPPENAAR M.C.; VORSTER T.B.
    Tobacco and Cotton Research Institute, Rustenburg, South Africa
    A strategy for nematode research with the objective of eventual integrated control of nematodes on tobacco has been implemented at TCRI. Long- and short-term research objectives for laboratory, greenhouse and field research have been identified and...
  2. 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...
  3. 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...
  4. Bull. Spec. CORESTA Congress, Harare 1994, p. 17, A 8

    Evaluation of chilean nitrates as top dressers in production of light soil flue-cured tobacco in India

    CHARI M.S.; RAMAKRISHNAYYA B.V.; REDDY P.R.S.; PRASADA RAO J.A.V.
    Central Tobacco Research Institute (CTRI), Rajahmundry (A.P.) India
    Three chilean nitrate fertilizers i.e. sodium nitrate (16-0-0), sodium potassium nitrate (15-0-14) and potassium nitrate (13-0-45) were evaluated as top dressers for light soil flue-cured tobacco by conducting bulk trials at six locations in Northern...