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660 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 17

    Evaluation of novel biological control bacteria for management of angular leaf spot in dark tobacco

    MARTINEZ-OCHOA N.; SHIELDS C.A.; ARAUJO ALVES M.; JOUBERT A.; MILLER R.D.
    University of Kentucky, Department of Plant and Soils, KTRDC, Lexington, KY, U.S.A.
    Angular leaf spot (ALS) caused by Pseudomonas syringae pv. tabaci (Pst) is the most important foliar disease of dark tobacco in Kentucky. In addition to cultural practices such as crop rotation, sanitation, and removal of debris, the antibiotic...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 19

    A novel low alkaloid gene

    FISHER A.M.(1); PATRA B.(1); WU X.(2); SINGH S.(1); FISHER C.R.(2); JI H.(1)
    (1) University of Kentucky, Kentucky Tobacco Research & Development Centre, Lexington, KY, U.S.A.; (2) University of Kentucky, Department of Plant & Soil Sciences, KTRDC, Lexington, KY, U.S.A.
    With possible future regulation of nicotine levels, scientists are searching for ways to lower nicotine in ways acceptable to the tobacco industry. The conventionally bred nic1nic2 low alkaloid (LA) mutants lower nicotine to only about 10 % of...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 22

    The effect of nicotine content on cured leaf quality of Burley

    FISHER C.R.(1); JI H.(2); WU X.(2); FISHER A.M.(2)
    (1) University of Kentucky, Plant & Soil Science Department, Lexington, KY, U.S.A.; (2) University of Kentucky, Kentucky Tobacco Research & Development Center, Lexington, KY, U.S.A.
    The low alkaloid (LA) varieties generally have smooth, slick darker green leaves that produce an undesirable cured leaf quality. This can be partially explained by the pleiotropic effect of the recessive nicotine alleles also affecting various stress...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 40

    Differential susceptibility to angular leaf spot (Pseudomonas syringae pv. tabaci) in dark tobacco varieties

    KEENEY A.B.(1); BAILEY W.A.(1); HANSON Z.R.(2)
    (1) University of Kentucky, Department of Plant and Soil Sciences, Research & Education Center, Princeton, KY, U.S.A.; (2) University of Tennessee, Department of Plant Science, Knoxville, TN, U.S.A.
    Angular leaf spot (ALS) is a bacterial disease caused by Pseudomonas syringae pv. tabaci. Since 2015, ALS has become the most prevalent and damaging foliar disease of dark tobacco. The objective of this study was to evaluate common dark tobacco...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 41

    Evaluation of spray programs for control on angular leaf spot (Pseudomonas syringae pv. tabaci) in dark tobacco production

    KEENEY A.B.; BAILEY W.A.
    University of Kentucky, Department of Plant and Soil Sciences, Research & Education Center, Princeton, KY, U.S.A.
    Angular leaf spot (Pseudomonas syringae pv. tabaci) has become the most prevalent and problematic foliar disease in dark tobacco since 2015. Field trials focusing on angular leaf spot control began in 2015 and have been ongoing each year at the...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 44

    Development of production recommendations for Connecticut Broadleaf cigar wrapper tobacco in Kentucky and Tennessee

    BAILEY W.A.; RODGERS J.C.; KEENEY A.B.; PERKINS C.H.; WITCHER V.F.
    University of Kentucky, Department of Plant and Soil Sciences, Research & Education Center, Princeton, KY, U.S.A.
    Leaf dealers have recently expressed interest in expanding production of Connecticut Broadleaf cigar wrapper tobacco into Kentucky and Tennessee. In an effort to develop production recommendations for Connecticut Broadleaf grown in Kentucky and...
  7. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 51

    Impact of potassium source on cured leaf moisture and total TSNA in Burley and dark fire-cured tobacco

    BAILEY W.A.(1); KEENEY A.B.(1); PEARCE R.C.(1); RICHMOND M.D.(2)
    (1) University of Kentucky, Department of Plant and Soil Sciences, Lexington, KY, U.S.A.; (2) University of Tennessee, Department of Plant Sciences, Knoxville, TN, U.S.A.
    Evaluations on the effect of potassium source on the formation of tobacco-specific nitrosamines (TSNA) in dark and Burley types of tobacco have been of recent interest. Previous field research at the University of Kentucky has observed reductions in...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2021, Online, ST 33

    Studying the release of natural tobacco flavorants and nicotine in a variety of tobaccos at HnB and vaping temperatures (100-400 °C)

    MIHAYLOVA-KROUMOVA A.B.(1); WAGNER J.G.(2)
    (1) University of Kentucky, Kentucky Tobacco Research and Development Center, Lexington, KY, U.S.A.; (2) University of Kentucky, Plant Science Building, Lexington, KY, U.S.A.
    There are novel trends in the tobacco industry, motivated by the regulations aimed at reducing the risk of tobacco products. Many studies show significant reduction of harm-causing compounds released from heat-not-burn (HnB) or other non-combusted...