1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 13

    Development of codominant markers related to powdery mildew resistance from N. tomentosiformis origin

    JULIO E.(1); MALPICA A.(2); COTUCHEAU J.(1); BACHET S.(2); VOLPATTI R.(1); DECORPS C.(1); DORLHAC DE BORNE F.(1)
    (1) SEITA - Imperial Brands, Leaf Research, Bergerac, France; (2) Bergerac Seeds and Breeding, Bergerac, France
    Powdery mildew is a common tobacco plant fungal disease which can reduce growers' crop yields, particularly in South Africa, Asia and Europe. Three different resistance sources are known, coming from wild tobacco species N. tomentosiformis and N. ...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 14

    Field tests of loss-of-function tobacco lines of eIF(iso)4E for resistance to tobacco bushy top disease and agronomic traits

    KOGA K.(1); SHINJO A.(1); MAINJENI C.E.D.(2); MSANGOSOKO K.R.(2); UDAGAWA H.(1); TAKAKURA Y.(1)
    (1) Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan; (2) Agricultural Research and Extension Trust, Department of Research and Technical Services, Lilongwe, Malawi
    Tobacco bushy top disease (TBTD) is one of the serious diseases affecting tobacco (Nicotiana tabacum L.) production in African countries such as Malawi, Zambia, Tanzania and Ethiopia. This disease is caused by a mixed infection of tobacco bushy top virus ...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 16

    Greenhouse and field applications of various organic nitrogen fertilizer sources

    MANNING N.J.; VANN M.C.; SUCHOFF D.H.; WOODLEY A.; McGINNIS M.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Current nitrogen fertilizer programs for organic flue-cured tobacco production have proven successful but are not absent of agronomic concern. In the current evaluation, different organic nitrogen sources were evaluated for their usability in seedling and ...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 17

    Variation of soil potassium quantity-intensity relationship in flue-cured tobacco-rape rotation system under long-term located potassium application

    DAI Kuai(1); LI Jiangzhou(1); ZHANG Limeng(1); JI Sigui(1); LONG Huaiyu(2); XU Zhaoli(3); DUAN Yuqi(3); YANG Yuhong(3); LU Xiuping(3); JIAO Yongge(1); BU Lingduo(1)
    (1) Yunnan Tobacco Company Yuxi Branch/Biological Control of Tobacco Diseases and Insect Pests Engineering Research Center of China, Yuxi, P.R. China; (2) Institute of Agriculture Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, P.R. China; (3) Yunnan Tobacco Agriculture Research Institute, Kunming 650031, P.R. China
    The aim of this study was to explore the effect of long-term potassium application on soil potassium supply capacity, so as to provide certain scientific basis for rationalising potassium application and continuing research on the development of ...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 18

    Establishing application protocols for poultry litter and feather meal in organic Burley tobacco production

    SUCHOFF D.H.; VANN M.C.; FISHER L.R.; WHITLEY D.S.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Information on nutrient management in organic Burley tobacco is limited. Unlike conventional nitrogen (N) sources, which are readily available for plant use upon application, organic N fertilizers require microbial mineralization to become plant available ...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 19

    Effects of rotation and organic fertilisers on soil water-stable aggregate stability and their associated carbon and nitrogen in flue-cured tobacco production

    HU Binbin; REN Ke; CHEN Yanjie; GONGJIANG Shiqi; ZOU Congming; CHEN Yi; ZHAO Gaokun; HUANG Wei; XU Zhaoli; JIN Yan
    Yunnan Academy of Tobacco Agricultural Sciences of CNTC, Kunming City, Yunnan Province, P.R. China
    Long-term mono-cropping and over application of chemical fertilisers will result in reduced water-stable soil aggregate stability and soil nitrogen (N) and carbon (C) stocks. To understand how agronomic practices affect soil structure and organic matter ...
  7. 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 ...
  8. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 21

    Evaluations of rimsulfuron application timing and rate in flue-cured tobacco

    VANN M.C.; INMAN M.D.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Field studies were conducted from 2016 through 2018 to evaluate flue-cured tobacco response to rimsulfuron application timing and rate (17 and 34 g a.i. ha-1). Additionally, weed control was evaluated in combination with current recommended herbicide ...
  9. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 22

    Organic suckercides: screening various compounds for efficacy and injury potential

    SUCHOFF D.H.; VANN M.C.; SHORT M.M.
    North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Organically derived fatty alcohol products are useful for the control of tobacco axillary buds (suckers) and are greatly needed by commercial tobacco farmers. Recently, USDA-National Organic Program approval of these products has been scrutinized, leaving ...