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14 results

  1. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 145, P5, ISSN.0525-6240

    Distribution, incidence and severity of root knot nematodes (Meloidogyne spp.) on tobacco in Caceres, Spain

    DE JESUS VALDIVIA M.; BLANCO I.; DE LOS ANGELES M.; RUFTY R.C.
    Instituto Technologico del Tabaco, Sevilla, Spain
    Fifteen Burley and forty-six flue-cured tobacco fields were evaluated in 1990 and 1991 to determine percent plants infected with root-knot nematodes (incidence) and to establish distribution and damage caused in the tobacco-growing province of Caceres, ...
  2. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 157, P17, ISSN.0525-6240

    A survey of the viruses affecting Burley tobacco in Granada, Spain in 1990 and 1991

    DE LOS ANGELES M.; DE JESUS VALDIVIA M.; BLANCO I.; RUFTY R.C.
    Instituto Technologico del Tabaco, Sevilla, Spain
    A survey was conducted in 1990 and 1991 to determine which viruses were prevalent on Burley tobacco in Granada, Spain and also to estimate their incidence and distribution. A total of 20 fields in seven areas representing the bulk of the Burley production ...
  3. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 158, P18, ISSN.0525-6240

    Incidence and distribution of viruses on flue-cured and Burley tobacco in Caceres, Spain in 1990 and 1991

    DE LOS ANGELES M.; DE JESUS VALDIVIA M.; BLANCO I.; RUFTY R.C.
    Instituto Technologico del Tabaco, Sevilla, Spain
    The objective of this study was to determine the identity of viruses affecting tobacco in Caceres, Spain as well as their incidence and distribution. Sixty fields of flue-cured and twenty fields of Burley tobacco were sampled in 1990 and 1991 in the main ...
  4. Bull. Spec. CORESTA Symposium, Winston-Salem, 1982, p. 55, A13, ISSN.0525-6240

    Relationship between reducing sugar content and hygroscopic properties of Spanish flue-cured tobacco

    MUNOZ V.C.; COMPANY M.L.
    Technical Institute for Tobacco, Seville, Spain
    Tobacco, like any other crop, retains its capacity to absorb air moisture through all post-harvest stages. The water content of tobacco leaf after curing or shredding, as well as the capacity of the tobacco to absorb moisture from the air, is important in ...
  5. Bull. Spec. CORESTA Congress, Manila, 1980, p. 100, AP06, ISSN.0525-6240

    Obtaining varieties of Nicotiana tabacum low in nicotine content by induced androgenesis

    GRANDE M.D.; MORENO M.V.; DE ANGULO C.F.
    Instituto Technologico del Tabaco, Sevilla, Spain
    For several years the I.T.T. in Sevilla has been working on obtaining new lines of tobacco, low in nicotine content, by the induced androgenesis procedure. The techniques used, with some variants, are those which J. P. Bourgin and J. P. Nitsch described ...
  6. Bull. Spec. CORESTA Congress, Manila, 1980, p. 62, A16, ISSN.0525-6240

    Influence of potassic fertilizers on the quality and the yield of burley tobacco

    LLANOS M.; GOMEZ DE LEON J.M.
    Tobacco Institute of Technology, Enrique Alcaraz Mira, Seville, Spain
    Considering that only two types of potash (chloride and sulphate) are available on the Spanish market, the influence of both of them on the quality and yield of Burley was studied. Several doses of N, P, K, the latter either as chloride or as sulphate, ...