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  2. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 06

    Response of soil bacterial community structure and co-occurrence network topology properties to soil physicochemical properties in long-term continuous cropping farmland

    ZENG Weiai(1); YANG Zhaoyue(2); GU Yabing(2); XIE Pengfei(1); CAI Hailin(1); YIN Huaqun(2)
    (1) Changsha Tobacco Company of Hunan Province, Changsha, China; (2) School of Minerals Processing and Bioengineering, Central South University, Changsha, China
    The objective of this study was to explore the relationship between the soil bacterial community (i.e. structure and molecular ecological network) and environmental evolution in long-term continuous cropping field. In this study, soil samples were...
  3. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 07

    Optimization of prediction model for tobacco leaf dehydration rate during intensive curing process based on machine learning

    DU Haina(1,2); MENG Lingfeng(1); WANG Songfeng(1); ZHANG Binghui(3); HE Dengfeng(4); XUN Xiaohong(5); GAO Jun(6); WANG Aihua(1); LIU Hao(1,2); LI Zengsheng(1,2); SUN Fushan(1)
    (1) Institute of Tobacco Research of CAAS, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture, Qingdao, China; (2) Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing, China; (3) CNTC FuJian Corporation, FuZhou, China; (4) CNTC ShanXi Corporation, XiAn, China; (5) Chongqing Tobacco Science Research Institute, Chongqing, China; (6) Liangshan Tobacco Company of Sichuan Province, Xichang, Sichuan, China
    The objective of this study was to quantify the apparent characteristic values of tobacco leaves during the intensive curing process, to grasp the law of changes in water loss, and to achieve precise control of curing process parameters during the...
  4. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 09

    Effect of ridging and hilling on dark tobacco standability and sucker control

    BAILEY W.A.(1); RODGERS J.C.(1); RICHMOND M.D.(2); ELLIS R.(2)
    (1) University of Kentucky, Research & Education Center, Princeton, KY, U.S.A.; (2) University of Tennessee, Highland Rim AgResearch & Education Center, Springfield, TN, U.S.A.
    Sucker control practices for dark tobacco are done primarily with contact and local systemic agrochemicals. These are applied as labor-intensive, manual stalk-rundown applications with droplines due to the tendency of dark tobacco to have crooked...
  5. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 10

    Field performance of fewer sucker variety in production area of Japan

    TAGA T.; NAKAMURA T.; NARAGINO T.
    Leaf Tobacco Research Center, R&D Group, Japan Tobacco Inc., Oyama, Tochigi, Japan
    Sucker control is a key process for tobacco production because it affects yield and quality. In general, sucker growth is suppressed by using a suckercide and the remaining suckers are removed by hand. However, such sucker management is a tough...
  6. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 11

    Evaluations of modern spray nozzle technology for maleic hydrazide application

    VANN M.C.(1); ROUSSOS R.N.J.(1); ELLINGTON G.(2); CAHOON C.W.(1); GANNON T.(1)
    (1) Department of Crop & Soil Sciences, North Carolina State University, Raleigh, NC, U.S.A.; (2) Department of Biological & Agricultural Engineering, North Carolina State University, Raleigh, NC, U.S.A.
    Maleic hydrazide (MH) remains a critical component of sucker control programs in US tobacco production systems. However, MH residues remain a strong critique of tobacco sourced from the region. The purpose of our research was to evaluate medium and...
  7. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 12

    Sustaining maleic hydrazide: an alternative application technique for reduced residues in flue-cured tobacco

    ROUSSOS R.N.J.(1); VANN M.C.(1); ELLINGTON G.(2); CAHOON C.W.(1); GANNON T.(1)
    (1) Department of Crop & Soil Sciences, North Carolina State University, Raleigh, NC, U.S.A.; (2) Department of Biological & Agricultural Engineering, North Carolina State University, Raleigh, NC, U.S.A.
    Cured leaf residues of the plant growth regulator maleic hydrazide (MH) remain as a serious concern to the allied tobacco industry in the United States. Current MH application programs rely on foliar, over-the-top delivery systems that saturate the...
  10. CORESTA Congress, Online, 2022, Agronomy/Phytopathology Groups, AP 15

    Automatic identification and precise prevention of deep green infection in tobacco leaf using a hand-held DLP-based NIR spectrometer

    YANG Shuangyan(1); YANG Tao(1); SHEN Yanwen(1); YANG Zigang(1); ZHANG Jianqiang(2)
    (1) Yunnan Tobacco Biological Technology Co., Ltd, Kunming, China; (2) Yunnan Police College, Kunming, China
    Identification and prevention of deep green infection play an important role in high-quality production of tobacco leaf. However, at present, it is difficult to automatically and accurately evaluate the infection level, and especially prevent the...