期刊
JOURNAL OF FUNGI
卷 7, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/jof7090685
关键词
Trichoderma asperellum; hymexazol; Fusarium wilt; cowpea
资金
- National Natural Science Foundation of China [31760510]
- Hainan Provincial Natural Science Foundation of China [319MS015]
- National Undergraduate Training Programs for Innovation and Entrepreneurship of China [201910589025]
The study confirmed that the combined application of Trichoderma and hymexazol effectively controls cowpea wilt disease, reduces the use of chemical fungicides, and is an environmentally friendly method.
The use of synthetic fungicide needs to be gradually reduced because of its adverse effect on human health and the environment. An integrated approach combining fungicides with biological control agents (BCAs) can be used to reduce the fungicide doses, thereby minimizing the risks associated with chemical fungicides. In this study, the combined application of a BCA Trichoderma and a fungicide hymexazol was used to manage the cowpea wilt disease caused by Fusarium oxysporum. The Trichoderma SC012 strain, which is resistant to hymexazol, was screened out and identified as T. asperellum. T. asperellum SC012 showed hyperparasitism to F. oxysporum and could penetrate and encircle the hyphae of pathogen on a medium amended or not with hymexazol. When combined with hymexazol, the population density in the rhizosphere soil of cowpea showed no significant difference compared with the treatment Trichoderma used alone. When the concentration of T. asperellum SC012 or hymexazol was halved, their combined application could control cowpea wilt disease more effectively than their individual use. The findings showed that the combination of Trichoderma and hymexazol could reduce the use of chemical fungicide, which is eco-friendly and may be an important part of integrated control of Fusarium wilt in cowpea.
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