Search Results

101 results

  1. Sensors, 2011, 11, 2369-2384; doi:10.3390/s110302369

    Classification and quality evaluation of tobacco leaves based on image processing and fuzzy comprehensive evaluation

    FAN ZHANG (1,2); XINHONG ZHANG (3)
    1. Institute of Image Processing and Pattern Recognition, Henan University, Kaifeng 475001, P.R. China 2. College of Computer and Information Engineering, Henan University, Kaifeng, 475001, P.R. China 3. Computing Center, Henan University, Kaifeng 475001, P.R. China
    Most of classification, quality evaluation or grading of the flue-cured tobacco leaves are manually operated, which relies on the judgmental experience of experts, and inevitably limited by personal, physical and environmental factors. The classification ...
  2. Tob. Sci., 1999, 43-4, p. 68-74. ISSN.0082-4623

    Effect of application technique on imidacloprid efficacy against tobacco aphids on Connecticut cigar wrapper tobacco

    LAMONDIA J.A.; RATHIER T.M.
    Connecticut Agric. Exp. Station, Windsor, CT, USA
    The effects of application technique on the efficacy of imidacloprid (Admire 2F) against the tobacco aphid (Myzus nicotianae Blackman) in Connecticut cigar wrapper tobacco were investigated from 1995 to 1998. Imidacloprid was efficacious when applied as a ...
  3. Tob. Sci., 1995, 39-1, p. 23-9., ISSN.0082-4632.

    Effects of planting date and tobacco germplasm source on the occurrence of spotted wilt virus and on the abundance of thrips and tobacco aphids

    McPHERSON R.M.; STEPHENSON M.G.; JACKSON D.M.
    University of Georgia, Dept. of Entomology, Tifton, GA, USA.
    Field experiments were conducted in Georgia during 1992 and 1993 to evaluate the impact of planting date and tobacco germplasm source on the abundance of thrips, primarily the tobacco thrips Frankliniella fusca (Hinds), and the tobacco aphid Myzus ...
  4. Tob. Sci., 1995, 39-1, p. 30-7, ISSN.0082-4632.

    Impact of transplanting date and insecticide control practices on the incidence of tomato spotted wilt virus and insect pests in flue-cured tobacco

    McPHERSON R.M.; CULBREATH A.K.; STEPHENSON M.G.
    University of Georgia, Dept. of Entomology, Tifton, GA, USA.
    Field studies were conducted in Georgia on flue-cured tobacco, Nicotiana tabacum L., during 1991 and 1992 to evaluate the effects of transplanting date and six insecticide control practices on the abundance of thrips, primarily Frankliniella fusca (Hinds) ...
  5. Tob. Sci., 1995, 39-1, p.18-22., ISSN.0082-4623

    In vitro selection of glyphosate-tolerant tobacco callus lines and expression of herbicide tolerance in regenerated plants

    NEDKOVSKA M .
    Bulgarian Acad. of Science, Inst. of Genetics, Dept. of Cell Genetics, Sofia, Bulgaria.
    The objectives of this study were the selection of glyphosate-tolerant callus cultures of important Bulgarian tobacco (Nicotiana tabacum L,) cultivars, regeneration of tolerant calli, confirmation of tolerance in regenerated plants, and field testing of ...
  6. Tob. Sci., 1995, 39-2, p. 38-42., ISSN.0082-4623

    Hybridization between Nicotiana gossei Domin and N. tabacum L. for development of Oriental tobacco lines resistant to tobacco aphids and diseases

    PALAKARCHEVA M.; STANEVA M.; TSANOVA E.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The disease- and aphid-resistant species, N. gossei (2n=36), was crossed with N. tabacum cv. Kroumovgrad 90, an Oriental tobacco type. The F 1 hybrids from this cross were all sterile. Regenerates of this cross were developed by in vitro methods, and they ...