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741 results

  1. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 08

    Potential fungicides and biocontrol agents to manage target spot (Thanatephorus cucumeris) on flue-cured tobacco in Virginia

    JOHNSON C.S.
    Virginia Tech, Southern Piedmont Agricultural Research and Extension Center, Blackstone, VA, U.S.A.
    Target spot (Thanatephorus cucumeris) remains a threat to flue-cured tobacco production in Virginia, and field experiments since 2001 have sought to identify effective fungicides for target spot control. Trials in 2017-2019 included fungicides from...
  2. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 11

    Analysis of the surface chemistry of high- and low-alkaloid Burley varieties/lines grown using standard agronomic practices and under low-nicotine field management

    MIHAYLOVA-KROUMOVA A.(1); FISHER A.M.(1); FISHER C.R.(2); WAGNER J.G.(1)
    (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.
    Proposed FDA regulations may require significant reduction of the nicotine content of tobacco products. Lowering the nicotine content may impact tobacco leaf surface chemistry that affects flavour. The objective was to compare the leaf surface...
  3. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 12

    Reducing nicotine in Burley tobacco by combining low alkaloid varieties and agronomic practices – a very different second year

    FISHER A.M.; FISHER C.R.; JI Huihua
    University of Kentucky, Lexington, KY, U.S.A.
    In 2018, we did a study to test whether nicotine levels of 0.3 - 0.5 mg/g could be achieved if the currently available low alkaloid (LA) varieties were grown using all agronomic practices that are known to lower nicotine. One standard variety, TN...
  4. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 14

    A comparison of traditional and alternative fertilizer programs for flue-cured tobacco production

    SHORT M.M.; VANN M.C.; CHEEK J.A.; WHITLEY D.S.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Previous fertilizer research in flue-cured tobacco has compared a wide range of nutrient programs, ultimately demonstrating the usability and function of numerous sources. The objective of this study was to investigate the influence of nitrogen (N)...
  5. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 15

    Nitrogen fertilizer source and the impact to flue-cured tobacco nutrient assimilation, yield, quality, value, and chemistry

    VANN M.C.; WOODLEY A.L.; SUCHOFF D.H.; FISHER L.R.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    The impact of nitrogen (N) fertilizer sources to macro, secondary, and micronutrient assimilation at various growth stages and their impact to post-harvest measurements have not been reported in flue-cured tobacco. Research was conducted in 2016 and...
  6. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 16

    Nitrogen application programs for fine-textured soils of the North Carolina Piedmont

    VANN M.C.(1); WHITLEY D.S.(1); MASON J.H.(1); HAMBRICK T.(2); STRADER W.(3); DABBS D.C.(4)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) Forsyth County Cooperative Extension, Winston-Salem, NC, U.S.A.; (3) Rockingham County Cooperative Extension, Reidsville, NC, U.S.A.; (4) Alamance County Cooperative Extension, Burlington, NC, U.S.A.
    Late-season nitrogen (N) assimilation can greatly impact the yield and quality of flue-cured tobacco, particularly in the fine-textured Piedmont soils of North Carolina. Research was conducted in three environments to evaluate the effects of N...
  7. CORESTA Congress, Online, 2020, Agronomy/Phytopathology Groups, AP 17

    Establishing nitrogen fertility recommendations for the production of organic Burley tobacco

    SUCHOFF D.H.; VANN M.C.; FISHER L.R.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    As demand increases for organic tobacco products, growers transitioning to certified organic production systems require appropriate agronomic recommendations. Two studies were conducted at the Mountain Research Station in Waynesville (W), NC and the...