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39 results

  1. TSRC, Tob. Sci. Res. Conf., 2012, 66, abstr. 04

    Past, present and future approaches for reducing cadmium content in tobacco leaves

    MANOHAR M.(1,2); SHIGAKI T.(3); SHIGAKI L.(3);HIRSCHI K.D.(1,2)
    (1) United States Department of Agriculture/Agricultural Research Service Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA; (2) Vegetable and Fruit Improvement Center, Texas A&M University, College Station, TX, USA; (3) Papua New Guinea National Agricultural Research Institute, Papua, New Guinea
    Contamination of soils by heavy metals such as cadmium is of great concern for global agricultural practices and human health. To overcome the toxic effects of heavy metals, plants have evolved various mechanisms such as reduced intake of toxic metals, ...
  2. Tob. Reporter, 1994, 121-5, p. 59-61.,Tob. Sci. 1994, 38, p. 35-7, ISSN.0361-5693

    Reduced population growth and delayed development of the cigarette beetle (Coleoptera: anobiidae) due to thuringiensin

    KEEVER D.W.
    USDA-ARS, Oxford, NC, USA
    Three formulations of thuringiensis, the heat-stable á-exotoxin of Bacillus thuringiensis, were incorporated into diet medium (finely ground tobacco) of first instar cigarette beetles, Lasioderma serricorne (F.). At 15 and 60 ppm (wt a.i./wt diet medium), ...
  3. Tob. Reporter, 1993, 120-10, p. 55-8, Tob. Sci, 1993, 37, p. 65-68, ISSN.0361-5693

    Freezing of tobacco display samples for disinfestation of the cigarette beetle (Coleoptera : Anobiidae)

    KEEVER D.W.
    USDA-ARS, Crops Research Lab, Oxford, NC, USA
    Freezing was studied as a means of disinfesting tobacco display samples (TDSs) of live cigarette beetles, Lasioderma serricorne (F.). In an initial study of temperatures from 0 to-15.degree.C, all adults were killed at-15.degree.C by a 24-h exposure, but ...
  4. Tob. Reporter, 1993, 120-8, p. 65-7. Tob. Sci, 1993, 37, p. 39-41, ISSN.0361-5693

    Evaluation of flue-cured tobacco breeding lines for improved sucker control with maleic hydrazide

    SELTMANN H.; SISSON V.A.
    USDA-ARS, Crops Research Lab, Oxford, NC, USA
    Residues of maleic hydrazide (MH) used to control suckers (axillary buds) in the production of flue-cured tobacco (Nicotiana tabacum L.) pose a problem in the marketability of the cured leaf. This study was conducted to determine if sucker control could ...
  5. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 122, A18, ISSN.0525-6240

    Effect of MH application time on methanol soluble and insoluble residues in flue-cured tobacco

    SELTMANN H.; SHEETS T.J.; MEYER S.A.
    USDA-ARS, Crops Research Lab, Oxford, NC, USA
    Field experiments were conducted for two years with maleic hydrazide (MH) in a chemical sucker control program to determine the relationship between the degree of control and the time of day that the MH was applied; and to determine the relationship ...