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60 results

  1. CORESTA Congress, Sapporo, 2012, Agronomy/Phytopathology Groups, AP 17

    Responses of flue-cured tobacco to the fertilisation of sulphur (SO4) in South Africa

    BOSHOFF H.J.
    Agricultural Research Council – Institute for Industrial Crops, Rustenburg, South Africa
    The objective of this study was to investigate the possible benefits of an increased supply of calcium on the yield, quality and chemical composition of flue-cured tobacco, specifically on soils that proportionally have a large amount of extractable...
  2. CORESTA Congress, Edinburgh, 2010, AP 24

    Evaluation of host suitability for meloidogyne species of rotational crops used in tobacco cultivation in South Africa

    VAN BILJON E.R.
    ARC, Agricultural Research Council - Institute for Industrial Crops, Rustenburg, South Africa
    Crop rotation is the single most useful practice that can realistically be applied to annual and short- term perennial crops. It is also not uncommon for a single field to have several nematode species present that could have a limiting effect on a...
  3. CORESTA Meeting, Agronomy/Phytopathology, Rovinj, 2009, AP 18

    Responses of flue-cured tobacco to the fertilization of phosphorus on sandy soils in South Africa

    BOSHOFF H.J.
    ARC, Agricultural Research Council - Institute for Industrial Crops, Rustenburg, South Africa
    High soil-test values for available phosphorus often seem to be ignored by growers and large amounts of phosphates are generally applied. This causes much concern for it unnecessarily increases costs and also potentially raises the possibility of...
  4. CORESTA Congress, Kyoto, 2004, A 02

    Decision support system for soil fertility and water quality - evaluation in FCV tobacco- growing zones of India

    KRISHNAMURTHY V.; RAVISANKAR H.; DEO SINGH K.
    Central Tobacco Research Institute (CTRI), Rajahmundry (A.P.) India
    Information Technology has become an integral part of our day-to-day life. In agriculture, computers are extensively used to disseminate the information on soils, water, climatic conditions, pest and disease management and one such information system...
  5. CORESTA Meeting, Agronomy/Phytopathology, Bucharest, 2003, A 01

    The effect of nitrogen on non-reduced nitrogen and tobacco-specific nitrosamines in dark air-cured tobacco

    BOSHOFF H.J.
    ARC, Agricultural Research Council - Institute for Industrial Crops, Rustenburg, South Africa
    Excessive amounts of nitrogenous fertilisers applied to dark air-cured tobacco are likely to increase the levels of non-reduced nitrogen in the tobacco. Non-reduced nitrogen will, under certain conditions, contribute to the formation of nitrosamines....