Search Results

91 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 20

    Implications of chloride application rate and nitrogen fertilizer source on flue-cured tobacco

    VANN M.C.(1); HARDY D.H.(2); FISHER L.R.(1)
    (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-) assimilation by flue-cured tobacco can be toxic and may negatively impact leaf quality and combustion when tissue concentration exceeds 1 %. Uptake is influenced by exposure to NH 4 + and Cl-, particularly that coming from fertilizer. The ...
  2. 48th TWC, Tob. Work. Conf., 2018, abstr. 09

    Evaluation of NCDA&CS boron sufficiency ranges for flue-cured tobacco

    JERNIGAN C.H.(1); HARDY D.H.(1); HICKS K.A.(1); McGINNIS M.S.(1); FISHER L.R.(2); VANN M.C.(2)
    (1) North Carolina Department of Agriculture and Consumer Services, Raleigh NC USA; (2) North Carolina State University, Raleigh NC USA
    Boron (B) is an essential micronutrient for optimum plant growth of flue-cured tobacco and is required in trace amounts (<1.0 lb B/acre). Since use of premium tobacco fertilizer grades that contain trace amounts of B are not typical in today’s ...
  3. 48th TWC, Tob. Work. Conf., 2018, abstr. 17

    Organic transplant production: an evaluation of nitrogen fertility programs

    VANN M.C.(1); FISHER L.R.(1); SEAGROVES R.(1); McGINNIS M.(2)
    (1) North Carolina State University, Raleigh NC USA; (2) North Carolina Department of Agriculture and Consumer Services, Raleigh NC USA
    Organic tobacco production in North Carolina has increased in recent years. Despite increasing interest, little is known regarding the appropriate management of organic nitrogen sources in a seedling float system. Research was conducted to evaluate three ...
  4. 48th TWC, Tob. Work. Conf., 2018, abstr. 18

    Evaluations of float water aeration in organic transplant production

    FISHER L.R.(1); VANN M.C.(1); SEAGROVES R.(1); McGINNIS M.(2)
    (1) North Carolina State University, Raleigh NC USA; (2) North Carolina Department of Agriculture and Consumer Services, Raleigh NC USA
    At present, the effects of float bed aeration in the production of organic tobacco seedlings are not known. Research was conducted to evaluate two organic nitrogen fertilizer programs and their effects to float water nutrient concentration and seedling ...
  5. 48th TWC, Tob. Work. Conf., 2018, abstr. 20

    Screening of acidifying chemicals for use in the production of organic tobacco seedlings

    VANN M.C.(1); SEAGROVES R.(1); SHORT M.(1); McGINNIS M.(2)
    (1) North Carolina State University, Raleigh NC USA; (2) North Carolina Department of Agriculture and Consumer Services, Raleigh NC USA
    Float water bicarbonate concentration in excess of 2.0 meq/L (100 ppm) can result in stunted, unusable seedlings unless float water is acidified. In conventional greenhouse systems, sulfuric acid is used for this purpose; however, that chemical is not ...
  6. 48th TWC, Tob. Work. Conf., 2018, abstr. 84

    Influence of Quadris fungicide and foliar fertilizer brands on the holdability of flue-cured tobacco

    WHALEY W.T.; JERNIGAN C.H.
    North Carolina Department of Agriculture and Consumer Services-Agronomic Division, Raleigh NC USA
    Over the past decade, tobacco farming in North Carolina has transitioned from many growers with relatively small acreage to fewer growers with more acreage. As a result, growers have experimented with various products in hopes of promoting holdability of ...
  7. 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 (HCO 3-) 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 approved ...
  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 blending ...
  9. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 33

    The effect of chloride application rate to the yield, quality, and chemical constituents of flue-cured tobacco

    PACE C.R.(1); VANN M.C.(1); FISHER L.R.(1); SEAGROVES R.(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 rates that exceed 33.6 kg/ha are generally discouraged in the production of flue-cured tobacco due to the negative effects the micronutrient can impart to yield, quality, and smoke flavor/aroma. Despite the negative effects ...
  10. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 54

    The regulation of autophagy of susceptible Nicotiana tabacum under tobacco mosaic virus infection

    YANG Jinguang(1); LIU Xaingfu(1); LIU Wei(1); QIAN Yumei(1); ZHANG Jing(2); LI Wei(2); DONG Shifei(2); WANG Yaofeng(3); HUANG Mingdi(4); WANG Fenglong(1)
    (1) Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Qingdao, P.R. China; (2) Hongyun Honghe Tobacco (Group) Co., Ltd., Kunming, P.R. China; (3) Qingyang Branch of Gansu Province Tobacco Company, Xifeng, P.R. China; (4) Longnan Tobacco Company, Gansu Tobacco Cooperation, Wudu 746000, P.R. China
    Autophagy (or self-eating) is an important conserved process by which eukaryotic cells recycle intracellular components. This study was undertaken to elucidate whether tobacco mosaic virus (TMV) infection on tobacco plants induced autophagy. TMV-U1 and ...