Effect of Procymidone on Controlling Strawberry Botrytis Cinerea by Trichoderma
YUAN Shui-xia 1，ZHANG Jia-jia1，FENG Ji-nian2*
（1Henan Vocational College of Agriculture，Zhengzhou 451450，Henan，China；2Key Laboratory of Plant Protection Resources and Pest Management，Ministry of Education，College of Plant Protection，Northwest A&F University，Yangling 712100，Shaanxi，China）
Considering biocontrol fungus Trichoderma and Botrytis cinerea had strong antagonistic action，pot experiment and field experiment were conducted to compare the control effect of Trichoderma，procymidone，and their mixture on strawberry gray mold. The results showed that in pot experiment，the control effect of Trichoderma on Botrytis cinerea by single application was 81.40%. When the ratio of Trichoderma and procymidone was 8∶1，the control efficiency was as high as 88.32%. The control effect ranged between 65%-80%，when Trichoderma mixed with procymidone by other ratio，which was still higher than that by applying fungicides alone. In fields，when Trichoderma and procymidone were mixed by the ratio of 8∶1 or 3∶1，the control efficiency was about 80%，which was safe for strawberry without any phytotoxicity. The stability of control effect of Trichoderma could be improved by adding certain proportion of procymidone，and the drug-fast generation of pathogenic bacteria to chemical fungicides could be delayed.
