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48 results

  1. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, APPOST 11

    Field trials with low nicotine tobacco varieties developed by conventional breeding technique: first results

    MALPICA A.(1); EVANS W.(2); ARCHIBALD C.(3); SCOTT L.(4); GARWE D.(5); CHAMANGO A.M.Z.(6); DORLHAC de BORNE F.(7); COLARD S.(8)
    (1) Bergerac Seed and Breeding, Bergerac, France; (2) Imperial Tobacco South Africa Pvt. Ltd, Umhlanga, Durban, South Africa; (3) Alliance One International Services, Camberley, Surrey, U.K.; (4) Universal Leaf Tobacco Co., Richmond, VA, U.S.A.; (5) Tobacco Research Board (TRB), Harare, Zimbabwe; (6) Agricultural Research & Extension Trust (ARET), Lilongwe, Malawi; (7) Imperial Tobacco Limited, Bergerac, France; (8) SEITA - Imperial Brands plc, Paris, France
    In 2015, the World Health Organisation (WHO) Study Group on Tobacco Product Regulation (“TobReg”) issued an advisory note recommending a strategy of reducing nicotine in tobacco to substantially lower levels of 0.4 mg/g. In the U.S., the Food and Drug ...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, APPOST 03

    Sponged tobacco: meteorological and altitude influence on curing methods in flue-cured systems in South Africa

    DU PLESSIS H.(1); ROOS H.J.(2)
    (1) Limpopo Tobacco Processors (Pty) Ltd, Rustenburg, South Africa; (2) Tobacco Producer, Rustenburg, South Africa
    Flue-cured tobacco in South Africa has over the years produced high amounts of sponged leaf, although the reaping of leaf was done at the correct physiological time. We asked if this was due to incorrect curing methods and due to meteorological influence ...
  3. 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 ...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, AP 35

    Sustainable wood supply from natural forests and woodlands versus deforestation for alternative wood supplies

    GELDENHUYS C.J.
    Stellenbosch University, Dept. of Forest & Wood Science, Pretoria, South Africa
    Harvesting poles for construction of homes and fences had been a traditional practice for centuries in many parts of Africa. The need for poles of specific dimensions and form in the growing and curing of tobacco added to this pressure on the natural ...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2011, Santiago, PPOST 09

    Black shank resistance in air-cured tobacco - South Africa

    DE BEER M.C.; TERBLANCHE J.
    ARC, Agricultural Research Council - Institute for Industrial Crops, Rustenburg, South Africa
    In the South African air-cured tobacco producing regions, black shank, caused by Phytophthora nicotianae var. nicotianae, is a major concern. The control of this disease is based only on crop rotation and chemical control by means of metalaxyl derivates. ...
  6. 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 ...
  7. 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 ...