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25 results

  1. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, APPOST 13

    Genetic diversity of potato virus Y infecting tobacco in major tobacco growing fields in Northern Vietnam

    NGUYEN VAN C.(1); NGUYEN VAN D.(2); VAN LE S.(2)
    (1) Vietnam Tobacco Institute, Hanoi, Vietnam; (2) Vietnam Institute of Biotechnology, Hanoi, Vietnam
    Potato virus Y (PVY) is the type member of genus Potyvirus and one of the most common species and most pernicious of Potyvirus. PVY has a wide host range and infects several important solanaceous crops, including potato, tomato and tobacco. In Vietnam, ...
  2. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, APPOST 15

    Effect of potato virus Y on growth, yield and chemical composition of flue-cured tobacco in Northern Vietnam

    NGUYEN VAN C.; HONG NGUYEN T.; THI DO T.
    Vietnam Tobacco Institute, Hanoi, Vietnam
    Potato virus Y (PVY) is a plant virus that causes significant losses to tobacco. PVY damage is severe in the tobacco growing provinces Lang Son and Bac Giang with disease rates from 10-45 %, with some areas infected 100 %. The objective of this study was ...
  3. CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, POST15 (non présenté)

    Evaluation of a rapid plant test as guide in fertilizer recommendation for tobacco

    BONOAN R.R.; RAQUEL J.V.; RAGANIT R.J.
    National Tobacco Administration, Quezon City, Philippines.
    A plant test for determining the nitrogen (N) fertilizer requirement of tobacco was developed and evaluated in laboratory, pot and field experiments. Sampling procedures for measuring the nitrate-N in petiole and stem sap were examined. In particular, the ...
  4. CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, POST16 (adjourned)

    A passive solar energy system for tobacco curing and food drying

    CASTRO R.C.; FRANCO S.S.; SAMBO C.S.; ABROGENA N.Q.; LAYAOEN H.L.
    National Tobacco Administration, Ilocos Norte - Philippines.
    The NTA Multi-Commodity Solar Dryer (MCSD) is a passive dryer designed based on the principle of appropriate technology. It consists of a drying chamber whose roof and wall serve as solar collectors. Clear polyethylene plastic was used as glazing. An ...
  5. Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 131, A22, ISSN.0525-6240

    Improved clay-walled natural convection flue-curing barn

    FRANCO S.S.; WOODS J.L.
    National Tobacco Administration, Ilocos Norte - Philippines and University of Newcastle upon Tyne, UK
    The analysis of the heat and mass balance of a natural convection flue-curing barn was undertaken. The investigation provided indicators of the system's energy flows at different barn modifications and varying ambient conditions at different stages ...