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91 results

  1. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups (Workshop), APW 03

    Maximizing the spray droplet to effectively deliver pesticides

    LEGLEITER T.
    University of Kentucky, University of Kentucky Research and Education Center, Princeton, KY, U.S.A.
    Numerous factors influence the efficacy of a pesticide on the intended target pest, including the delivery method of the pesticide to the target pest. Pesticides in the agronomic realm are most often delivered using spray droplets produced by a...
  2. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups (Workshop), APW 06

    Modification of tobacco chemical constituents by molecular breeding

    LEWIS R.S.; DEWEY R.E.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Tobacco plant chemistry affects consumer perception of derived products and also the potential for health risks associated with their use. Some cured leaf chemical components contribute positively to taste and aroma, while others have negative...
  3. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 01 (also presented at TSRC 2018)

    FDA advance notice of proposed rulemaking for nicotine level of combusted cigarettes – feasibility for compliance via tobacco plant genetics?

    HIATT E.
    R.J. Reynolds Tobacco Co., Winston-Salem, NC, U.S.A.
    On March 16, 2018, the U.S. Food and Drug Administration (FDA) published an advance notice of proposed rulemaking (ANPRM) entitled “Tobacco Product Standard for Nicotine Level of Combusted Cigarettes.” The publication of an ANPRM solicits information...
  4. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 02

    A newly characterized regulatory mechanism modulates the NIC2 locus that controls nicotine biosynthesis

    LING Y.; PRIYANKA P.; SANJAY K.S.; BARUNAVA P.; SITAKANTA P.
    Department of Plant and Soil Sciences, Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY 40546, U.S.A.
    The AP2/ERF family transcription factors (TFs) have emerged as key regulators of specialized metabolite biosynthesis, including nicotine in tobacco. Several group IX AP2/ERFs form physically linked gene clusters, likely originated from gene...
  5. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 03

    Transcriptomic and metabolomic analysis of very low nicotine tobacco lines

    KUDITHIPUDI C.(1); SHEN Yanxin(1); GOVINDRAJULU R.(2); XU Dongmei(1); WAREK U.(1); STRICKLAND J.A.(1)
    (1) Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.; (2) Eurofins Lancaster Laboratories, c/o Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.
    Nicotine is the most abundant alkaloid in cultivated tobacco (Nicotiana tabacum), typically constituting more than 90 % of total alkaloids. Recently, the U.S. Food and Drug Administration issued an advance notice of proposed rulemaking to obtain...
  6. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 07

    Float water alkalinity adjustment in organic seedling production

    VANN M.C.(1); STEVENS D.A.(1); SHORT M.(1); McGINNIS M.(2)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) North Carolina Department of Agriculture & Consumer Services – Agronomic Division, Raleigh, NC, U.S.A.
    Float water bicarbonate (HCO3-) concentration in excess of 2.0 meq/L (100 ppm) can result in stunted, unusable seedlings unless neutralized. In conventional greenhouse systems, sulfuric acid is used for this purpose; however, it is not currently...
  7. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 08

    Growth and nutrient uptake of Burley tobacco fertilized with alternative sources of potassium

    PEARCE B.(1); PAVULURI K.(2)
    (1) University of Kentucky, Lexington, KY, U.S.A.; (2) Sirius Minerals Plc, Scarborough, U.K.
    Burley tobacco has a relatively high requirement for potassium (K) with a typical crop removing over 250 kg K2O/ha. High levels of chloride (Cl) in the cured leaf can have a negative impact on cured leaf quality, limiting the amount of muriate of...
  8. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 09

    Chloride application: effects to nutrient assimilation, agronomic performance, and cured leaf chemistry of flue-cured tobacco

    VANN M.C.(1); FISHER L.R.(1); INMAN M.D.(1); HARDY D.H.(2)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) North Carolina Department of Agriculture & Consumer Services – Agronomic Division, Raleigh, NC, U.S.A.
    Chloride (Cl-) application in excess of 34 kg ha-1 has generally been discouraged in the production of U.S. flue-cured tobacco, due to the negative effects the nutrient can have on cured leaf yield, quality, and smoke sensory. However, fertilizer...