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136 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 NH4+ and Cl-, particularly that coming from fertilizer....
  2. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 27

    Next generation product aerosol bubbled extracts show little to no effect in high content screening endpoints when compared to cigarette smoke bubbled extracts

    TRELLES STICKEN E.(1); WIECZOREK R.(1); BODE L.M.(1); SIMMS L.(2); STEVENSON M.(2)
    (1) Reemtsma Cigarettenfabriken GmbH (an Imperial Brands PLC Company), BioToxLab, Hamburg, Germany; (2) Imperial Tobacco Limited, In vitro Research, Bristol, U.K.
    Tobacco-based and tobacco-free next generation products (NGPs) are understood to be a less harmful alternative to conventional combustible cigarettes. The objective of this study was to compare the in vitro biological response of cigarette smoke...
  3. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 34

    Next generation product aerosols induce lower biological activity than combusted cigarettes: a comparison of in vitro cell migration in the scratch wound assay

    RUDD K.(1); BUDDE J.(2); TRELLES STICKEN E.(2); WIECZOREK R.(2); SIMMS L.(1); STEVENSON M.(1)
    (1) Imperial Brands PLC, Bristol, U.K.; (2) Reemtsma Cigarettenfabriken GmbH (an Imperial Brands PLC Company), Hamburg, Germany
    Smoking combustible cigarettes is a cause of serious diseases in smokers, including heart disease. There are many commercially available next generation products (NGPs), such as tobacco-free e-vapour products, aiming to provide an alternative to...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 37

    Use of cell media nicotine concentration as a marker to predict cells surface deposited nicotine in transwells after fresh smoke/aerosol exposure

    WIECZOREK R.(1); TRELLES STICKEN E.(1); BODE L.M.(1); SIMMS l.(2)
    (1) Reemtsma Cigarettenfabriken GmbH (an Imperial Brands PLC Company), Hamburg, Germany; (2) Imperial Tobacco Limited, Bristol, U.K.
    Exposure of organotypic 3D lung models at the air liquid interface (ALI) to fresh whole smoke/aerosol provides a more human relevant exposure assessment of combustible cigarettes and e-vapour products. The aim of this study is to present a method...
  5. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STW 01

    The application of in vitro Toxicity Testing in 21 Century (TT21C) for next generation products

    SIMMS L.(1); TRELLES STICKEN E.(2)
    (1) Imperial Brands PLC, Bristol, U.K.; (2) Reemtsma Cigarettenfabriken GmbH (an Imperial Brands PLC Company), Hamburg, Germany
    The aim is to demonstrate the feasibility of TT21C in vitro methods as part of an overall assessment framework for next generation products (NGP). TT21C methodologies can be used to assess harm reduction potential of NGPs using human-derived...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...