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  1. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 03

    Effects of application timing and methods on chlorantraniliprole residues in flue-cured tobacco

    VANN M.C.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Chlorantraniliprole is a narrow-spectrum insecticide that offers good to excellent control of tobacco budworm (Heliothis virescens) and Tobacco Hornworm (Manduca sexta). Due to its long residual control, narrow-spectrum activity, safety, and the loss...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 37

    Capturing data electronically: modern problems require modern solutions

    MACHACEK J.L.; VANN M.C.; CHEEK J.A.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Physical means of data collection and note taking can be laborious and costly. A modern approach to fieldnotes utilizes electronic data capturing technology. With a few simple tools and software, pre- and post-harvest measurements can be...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 41

    Transplant water application: investigations of in-furrow & sidedress systemic insecticide placement

    STAINBACK C.G.(1); VANN M.C.(1); HUSETH A.(2)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) North Carolina State University, Department of Entomology & Plant Pathology, Raleigh, NC, U.S.A.
    In the last decade, many commercial tobacco farmers in North Carolina have transitioned away from greenhouse tray drench applications of imidacloprid, opting instead to include the systemic insecticide in transplant water applications for...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 42

    Flue-cured tobacco response to sub-lethal doses of HPPD-inhibiting herbicides

    VANN M.C.; CAHOON C.; CHEEK J.A.; MACHACEK J.L.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Herbicide-tolerant (HT) crops that are genetically engineered to withstand applications of multiple herbicidal modes of action are commonly produced in fields adjacent to flue-cured tobacco. The next generation of HT crops will express tolerance to a...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 45

    Fungicide evaluations for foliar leaf spot disease management

    STAINBACK C.B.; VANN M.C.; SHORT M.M.; CHEEK J.A.; MACHACEK J.L.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Foliar leaf spot diseases such as Rhizoctonia solani and Cercospora nicotianae have increased in severity over the last decade in North Carolina. A recent survey of County Agents suggests that yield losses from R. solani may exceed six percent...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 55

    Developing nitrogen and potassium fertilizer rate recommendations for cigar wrapper tobacco in North Carolina

    JAMES M.S.; 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.
    Cigar wrapper tobacco is a new crop to North Carolina. In the United States, it is traditionally grown in Pennsylvania and the Connecticut River Valley area; therefore, local nutrient application recommendations are not available to producers in the...
  7. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 56

    Agrochemical programs for cigar wrapper tobacco: impacts on cured leaf residues

    VANN M.C.(1); LALANDE F.(2); PRAT M.(2); HARTLEY M.(3); GREEN B.(3)
    (1) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.; (2) JT International GmbH, Trier, Germany; (3) Lancaster Leaf Tobacco Company, Lancaster, PA, U.S.A.
    In order to support the creation of Cigar-Guidance Residue Limits for the CORESTA Guide No. 21, field research was conducted in North Carolina from 2019-2021. Across the three growing environments, PA-41 (Grower’s Choice or Welk’s Pride) was produced...
  8. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 60

    Low nicotine flue-cured tobacco: influences of cultivar selection and agronomic management

    CHEEK J.A.; VANN M.C.; MACHACEK J.L.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    The reintroduction of proposed standards by the US-FDA warrants continued investigations of selected tobacco cultivars and management strategies that may reduce concentrations of nicotine and other metabolites in cured leaves. To quantify these...
  9. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, APPOST 02

    Mancozeb application in tobacco: a revival of an older chemistry?

    STAINBACK C.B.; VANN M.C.; MACHACEK J.L.; CHEEK J.A.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    In North Carolina, foliar leaf spot diseases, such as Rhizoctonia solani and Alternaria alternata, have increased in severity in recent growing seasons. Historically, azoxystrobin has provided sufficient control of R. solani; however, commercial...
  10. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, APPOST 03

    Flutriafol residues in non-traditional Burley tobacco

    VANN M.C.; WHITLEY D.S.; CHEEK J.A.; MACHACEK J.L.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Flutriafol is a fungicide that is not currently labelled for tobacco production, which may offer suppression of common foliar leaf spot diseases such as target spot (Rhizoctonia solani) and frogeye leaf spot (Cercospora nicotianae). In spite of such...