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2021 Volume 34 Issue 3
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WEI Jie-ling, XU zhe, LI Feng-fang, et al. Control Efficacy of 25% Pyraclostrobin·Dufulin Suspension Concentrate on Pitaya Canker[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 29-35. doi: 10.13718/j.cnki.zwys.2021.03.006
Citation: WEI Jie-ling, XU zhe, LI Feng-fang, et al. Control Efficacy of 25% Pyraclostrobin·Dufulin Suspension Concentrate on Pitaya Canker[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 29-35. doi: 10.13718/j.cnki.zwys.2021.03.006
shu

Control Efficacy of 25% Pyraclostrobin·Dufulin Suspension Concentrate on Pitaya Canker

  • Guangxi Tianyuan Biochemical Co., Ltd, Nanning 530007, China

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  • Received Date: 17/03/2021

  • MSC: S436.67

  • Pitaya canker,a worldwide fungal disease,seriously damages the yield and quality of pitaya. In this study,the control efficacy of 25% pyraclostrobin dufulin suspension concentrate (SC) against pitaya canker disease wasevaluated by laboratory toxicity test,in vitro branch test and field trial. The results showed that 25% pyraclostrobin dufulin SC exhibited excellent activity on pitaya ulcer bacteria,with an EC50 value of 1.628 mg/L,which was better than that of single dose treatments of 25% pyraclostrobin SC (3.822 mg/L) or of 20% dufulin SC (345.370 mg/L). In the in vitro test,the prevention and treatment efficacy of 25% pyraclostrobin dufulin SC were 65% and 40%,respectively,which were higher than those of single dose 25% pyraclostrobin SC(57% and 29%). In the field trial,the preventive and treatment efficacy of 25% pyraclostrobin dufulin SC on pitaya canker were 73% and 52%,respectively,a better result than that of single dose25% pyraclostrobin SC.
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Control Efficacy of 25% Pyraclostrobin·Dufulin Suspension Concentrate on Pitaya Canker

  • Received Date: 17/03/2021

Abstract: Pitaya canker,a worldwide fungal disease,seriously damages the yield and quality of pitaya. In this study,the control efficacy of 25% pyraclostrobin dufulin suspension concentrate (SC) against pitaya canker disease wasevaluated by laboratory toxicity test,in vitro branch test and field trial. The results showed that 25% pyraclostrobin dufulin SC exhibited excellent activity on pitaya ulcer bacteria,with an EC50 value of 1.628 mg/L,which was better than that of single dose treatments of 25% pyraclostrobin SC (3.822 mg/L) or of 20% dufulin SC (345.370 mg/L). In the in vitro test,the prevention and treatment efficacy of 25% pyraclostrobin dufulin SC were 65% and 40%,respectively,which were higher than those of single dose 25% pyraclostrobin SC(57% and 29%). In the field trial,the preventive and treatment efficacy of 25% pyraclostrobin dufulin SC on pitaya canker were 73% and 52%,respectively,a better result than that of single dose25% pyraclostrobin SC.

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