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| Control Effect of Biocontrol Bacteria Application on Clubroot Disease of Baojian
Chinese Cabbage |
| AI Huinuan1 ☆，LIN Zihan2，3 ☆，KANG Huajun2，LI Shuanghui1，ZHANG Li’na1，SHI Guoliang1，WANG Lihua1，LI Baoju2*，CHAI Ali2* |
| 1Agricultural and Rural Bureau of Yutian County，Tangshan，Hebei Province，Tangshan 064100，Hebei，China；2Vegetable and Flower Research Institute，Chinese Academy of Agricultural Sciences，National Key Laboratory of Vegetable Biology Breeding，Beijing 100081，China；3School of Horticulture，China Agricultural University，Beijing 100193，China |
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Abstract In order to explore the best application method of biocontrol bacteria in the field，the control effects of Bacillus polymyxa ZF129 and Bacillus velezensis ZF481 on clubroot disease of Yutian Baojian Chinese cabbage were compared in pot and field by application of biocontrol bacteria with organic fertilizer，biocontrol bacteria suspension agent，and collaborative application with chemical agents．The results showed that biocontrol bacteria combined applied with organic fertilizer got a good clubroot disease control effect on Chinese cabbage and the best promoting effect on growth．The control effect of 100 million spores · g-1 ZF129 and ZF481 biocontrol bacteria with organic fertilizer was 71.63% and 73.18% in pot，80.68% and 79.47% in field．The collaborative application of biocontrol bacterial suspension agent with chemical agents such as fluridine and chlorothalonil significantly improved the control effect，reaching 86.58% to 95.61%，with no significant difference compared to chemical treatment．
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Received: 04 July 2023
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