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2022 Volume 1 Issue 6
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LI Fengwei, JIANG Long, HU Litao, et al. Effects of Several Biocontrol Agents on Disease Resistance and Agronomic Characters of 'Yunyan 87'[J]. PLANT HEALTH AND MEDICINE, 2022, (6): 60-70. doi: 10.13718/j.cnki.zwyx.2022.06.007
Citation: LI Fengwei, JIANG Long, HU Litao, et al. Effects of Several Biocontrol Agents on Disease Resistance and Agronomic Characters of 'Yunyan 87'[J]. PLANT HEALTH AND MEDICINE, 2022, (6): 60-70. doi: 10.13718/j.cnki.zwyx.2022.06.007
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Effects of Several Biocontrol Agents on Disease Resistance and Agronomic Characters of 'Yunyan 87'

  • 1. College of Plant Protection, Southwest University, Chongqing 400715, China;

  • 2. Chongqing Fengdu Branch, China National Tobacco Corporation, Fengdu Chongqing 408200, China;

  • 3. Chongqing Shizhu Branch, China National Tobacco Corporation, Shizhu Chongqing 409100, China;

  • 4. Chongqing Tobacco Research Institute, Chongqing 400715, China;

  • 5. Chongqing Company of China Tobacco Corporation, Chongqing 400023, China

More Information
  • Received Date: 28/10/2022

  • MSC: S572

  • In order to clarify the effects of biocontrol agents on common tobacco diseases, five biocontrol agents were selected in this study, and their effects on tobacco diseases and agronomic characters were analyzed. It was found that Bacillus subtilis and Bacillus thuringiensis had good control effects on tobacco virus disease, tobacco wildfire disease and tobacco brown spot disease. The effects of the two biocontrol agents on the occurrence of tobacco diseases and agronomic traits were further compared between root irrigation and foliar spraying in different periods and with different application methods. It was found that the best application period and the best application method for control of Bacillus subtilis were the middle growth stage and foliar spraying treatment, respectively. The best application time and the best application method for control of Bacillus thuringiensis were the middle growth stage and root irrigation treatment, respectively, which could significantly reduce the occurrence of tobacco diseases and improve the agronomic characteristics of tobacco. This study provides a theoretical basis for tobacco disease control and improvement of tobacco agronomic characters.
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Effects of Several Biocontrol Agents on Disease Resistance and Agronomic Characters of 'Yunyan 87'

  • Received Date: 28/10/2022

Abstract: In order to clarify the effects of biocontrol agents on common tobacco diseases, five biocontrol agents were selected in this study, and their effects on tobacco diseases and agronomic characters were analyzed. It was found that Bacillus subtilis and Bacillus thuringiensis had good control effects on tobacco virus disease, tobacco wildfire disease and tobacco brown spot disease. The effects of the two biocontrol agents on the occurrence of tobacco diseases and agronomic traits were further compared between root irrigation and foliar spraying in different periods and with different application methods. It was found that the best application period and the best application method for control of Bacillus subtilis were the middle growth stage and foliar spraying treatment, respectively. The best application time and the best application method for control of Bacillus thuringiensis were the middle growth stage and root irrigation treatment, respectively, which could significantly reduce the occurrence of tobacco diseases and improve the agronomic characteristics of tobacco. This study provides a theoretical basis for tobacco disease control and improvement of tobacco agronomic characters.

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