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4 results

  1. 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 ...
  2. 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 ...
  3. 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 ...
  4. 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 ...