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2021 Volume 34 Issue 3
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CHEN Shu-hong, JIANG Lian-qiang, LUO Zu-hua, et al. Study on the Effect of Pesticide Treatment Timing on Tobacco Root-Knot Nematode Disease Control[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 7-12. doi: 10.13718/j.cnki.zwys.2021.03.002
Citation: CHEN Shu-hong, JIANG Lian-qiang, LUO Zu-hua, et al. Study on the Effect of Pesticide Treatment Timing on Tobacco Root-Knot Nematode Disease Control[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 7-12. doi: 10.13718/j.cnki.zwys.2021.03.002
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Study on the Effect of Pesticide Treatment Timing on Tobacco Root-Knot Nematode Disease Control

  • 1. Huili County Branch of Sichuan Tobacco Company, Huili Sichuan 615100, China;

  • 2. Liangshan Prefecture Branch of Sichuan Tobacco Company, Xichang Sichuan 615000, China;

  • 3. School of Plant Protection, Southwest University, Chongqing 400715, China

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  • Received Date: 03/05/2021

  • MSC: S435.72

  • Tobacco root knot nematode is a most important soil-borne tobacco disease in southwest China,especially in Liangshan prefecture of Sichuan province.In order to investigate the optimal time of pesticide application for reducing pesticide use and improving control efficiency,a field experiment was made in the tobacco-growing area of Liangshan,in which avermectin or thiazophos was applied to the soil 15 d before tobacco seedling transplanting,or 15 or 30 d after transplanting to compare the effects of the two pesticides on tobacco root-knot nematode. The results showed that both pesticides had some effect of controlling the occurrence of nematode disease and promoting the growth of tobacco plants. The earlier the soil were treated with the pesticides the better the effect would be.The control efficiency was 78% or more when pesticide application was made before transplanting,lowered to 50% when pesticide application was made 15 daysafter transplanting and dropped to a mere 18% when treatment was made 30 daysafter transplanting.
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Study on the Effect of Pesticide Treatment Timing on Tobacco Root-Knot Nematode Disease Control

  • Received Date: 03/05/2021

Abstract: Tobacco root knot nematode is a most important soil-borne tobacco disease in southwest China,especially in Liangshan prefecture of Sichuan province.In order to investigate the optimal time of pesticide application for reducing pesticide use and improving control efficiency,a field experiment was made in the tobacco-growing area of Liangshan,in which avermectin or thiazophos was applied to the soil 15 d before tobacco seedling transplanting,or 15 or 30 d after transplanting to compare the effects of the two pesticides on tobacco root-knot nematode. The results showed that both pesticides had some effect of controlling the occurrence of nematode disease and promoting the growth of tobacco plants. The earlier the soil were treated with the pesticides the better the effect would be.The control efficiency was 78% or more when pesticide application was made before transplanting,lowered to 50% when pesticide application was made 15 daysafter transplanting and dropped to a mere 18% when treatment was made 30 daysafter transplanting.

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