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111 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 01

    Flue-cured tobacco response to sub-lethal rates of glufosinate

    VANN M.C.(1); JORDAN D.L.(1); FISHER L.R.(2)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) NC Agriculture Research Service, North Carolina State University, Raleigh, NC, U.S.A.
    Glufosinate is a broad-spectrum, contact herbicide that is currently applied to genetically engineered row crops that tolerate exposure to the chemical, such as cotton (Gossypium hirsutum), maize (Zea mays), and soybean (Glycine max). Flue-cured...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 04

    Experiences in evaluation of boron needs in North Carolina flue-cured tobacco production: a summary of plant tissue sufficiency data and impacts on yield and quality

    HARDY D.(1); VANN M.C.(2); JERNIGAN C.(3); McGINNIS M.(1); HICKS K.(1)
    (1) Agronomic Division, North Carolina Dept. of Agriculture and Consumer Services, NC, U.S.A.; (2) Crop and Soil Science Department, North Carolina State University, NC, U.S.A.; (3) Helena Chemical Co., U.S.A.
    Boron (B), an essential micronutrient for optimum plant growth, is required in trace amounts (<1.1 kg B ha-1) by flue-cured tobacco. In past decades, boron deficiency in North Carolina has not been prevalent. However, recently, its deficiency has...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 06

    Auxin herbicide exposure: comparisons of 2,4-D and dicamba drift to flue-cured tobacco

    VANN M.C.(1); JORDAN D.L.(1); FISHER L.R.(2)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) NC Agriculture Research Service, North Carolina State University, Raleigh, NC, U.S.A.
    Auxin herbicide application has increased in North Carolina due to the commercialization of 2,4-D and dicamba tolerant crops. Flue-cured tobacco is extremely sensitive to both herbicides, yet is commonly grown in close proximity to genetically...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 21

    Impact of genotype and management on nicotine concentration in Burley tobacco

    VANN M.C.; MACHACEK J.L.; CHEEK J.A.; SHORT M.M.; WHITLEY D.S.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Proposed standards from the US-FDA suggest that nicotine should be lowered to non-addictive concentrations in cigarettes (0.3 to 0.5 mg g-1). One such method for lowering nicotine in finished products is to source leaf material with...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 23

    Effects of genotype and cultural practices on flue-cured tobacco growth, development, and chemistry

    VANN M.C.; CHEEK J.A.; MACHACEK J.L.; WHITLEY D.S.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    The reintroduction of proposed nicotine standards by the US-FDA warrants further investigations of selected tobacco genotypes and management strategies that may reduce concentrations of the metabolite. To quantify these effects, research was...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2021, Online, AP 43

    Cigar wrapper response to nitrogen fertilizer rates in western North Carolina

    SHORT M.M.; VANN M.C.; CHEEK J.A.; MACHACEK J.L.; WHITLEY D.S.
    Department of Crop & Soil Sciences, North Carolina State University, Raleigh, NC, U.S.A.
    Cigar wrapper tobacco is a new and emerging cash crop in western North Carolina. To develop nitrogen (N) fertilizer recommendations, field trials were initiated in 2020 to quantify the impact of N application rate to cigar wrapper tobacco yield,...
  7. 49th TWC, Tob. Work. Conf., 2020, abstr. 13

    Lower-leaf removal programs for flue-cured tobacco production in North Carolina

    COGGINS T.; VANN M.C.; FISHER L.R.; WELLS R.; BROWN A.B.; FINCH C.E.
    North Carolina Cooperative Extension Service - Davidson County, Lexington, NC USA
    Sluggish demand for lower-stalk positions has prompted consideration for de-lugging programs in North Carolina. The agronomic impact of these leaf removal systems has not been fully reported. The objective of this research was to compare lower-leaf...