Control efficacy of resveratrol 0.2％SL against cucumber gray mold and tomato leaf mold
To provide support for promotion and application of botanical pesticide resveratrol,the antibacterial activity and control effect of resveratrol 0.2％SL on grey mold and leaf mold were evaluated by indoor mycelium growth rate method and field spray method in this study.The results showed that resveratrol 0.2％SL had good inhibitory activities on Botrytis cinerea and Fulvia fulva,with the inhibitory rates of 93.5％and 86.2％,respectively.In field trials,resveratrol 0.2％SL 1 800 mL/hm2 had good control effects on gray mold of cucumber and leaf mold of tomato,the protection lasted for 21 d,and the best control effects were 90.7％and 80.3％,respectively.At the same time,it was found that the control effects of resveratrol 0.2％SL were related to the concentration,but there were no significant differences between the two dosages of resveratrol 0.2％SL 1 500 mL/hm2 and 1 800 mL/hm2.
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