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| Pathogenic Bacteria Isolation and Identification of Brown Leaf Spot on Strawberry in Henan Province and Screening of Control Fungicides |
| YUAN Hongbo1☆，WANG Zhuoni1，2☆，QIN Genhong1，SHI Bingke1，WANG Li1，HOU Hui1，GONG
Wenfeng2*，TU Hongtao1* |
| 1Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences，Zhengzhou 450009，Henan，China；2Tibet Agricultural and Animal Husbandry College，Linzhi 860000，Xizang，China |
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Abstract In order to definite the pathogenic bacteria species of strawberry brown leaf spot in main strawberry production regions of Henan Province，and screen safe and effective control fungicides，this study separated and purified pathogenic bacteria of strawberry brown leaf spot from diseased strawberry plants in Henan，screened 6 kinds of fungicides，and evaluated their control effects．This pathogenic bacteria was identified by morphology and molecular biology as Pilidium concavum. Among the 6 fungicides，the antibacterial effect of 450 g · L-1 prochloraz water emulsion was the best. Its control effect on strawberry brown leaf spot reached 83%，and its EC50 was 2.449 7 mg · L-1．It could be used as a candidate agent for field control on Henan strawberry brown leaf spot．
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Received: 09 January 2023
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