微生物菌剂对马铃薯黑痣病和黄萎病的防治效果

doi:10.12190/j.issn.2096-1197.2023.03.09

Abstract

Abstract: 【Objective】To clarify the effect of microbial agents on the control efficacy of potato black scurf and Verticillium wilt in field and the yield of potatoes.【Methods】Using randomized blocks design,five treatments were set up including Trichoderma harzianum WP,Bacillus amyloliquefaciens SC,Endophytic Bacillus spp. agent,Bacillus subtilis microbial agent and no agent application（CK）. Potato seedling emergence rate was investigated in seedling stage. The diseases incidence of potato black scurf and Verticillium wilt and yield were recorded in harvest period. The differences in potato emergence rate,control efficacy,and yield among different treatments were analyzed.【Results】All the four microbial agents did not affect the seedling of potatoes with seedling emergence rate all above 95.00%. The control efficacy on potato black scurf was better than that on potato Verticillium wilt. The four microbial agents had control efficacy ranging from 54.56% to 65.01% on potato black scurf,24.89% to 41.34% on potato Verticillium wilt,and 5.41% to 13.39% for yield increase rate. Bacillus amyloliquefaciens SC had control efficacy of 60.08% and 41.34% on potato black scurf and Verticillium wilt,respectively,and yield increase rate at 8.95%. The control efficacy of Endophytic Bacillus spp. agent on potato black scurf and Verticillium wilt were 65.01% and 32.12%,respectively,with yield increase rate at 13.39%.【Conclusion】Bacillus amyloliquefaciens SC and Endophytic Bacillus spp. agent had better control efficacy on potato black scurf and Verticillium wilt with good yield increase as well,could be used as biocontrol agents for potato soil-borne disease.

Key words: Potato, Black scurf, Verticillium wilt, Control efficacy, Yield increase rate

CLC Number:

S435.32

ZHAO Yuanzheng, ZHANG Bin, XU Limin, WANG Dong, PENG Jingwen, WANG Yu, ZHANG Peng, HAN Shengli, LIANG Dongchao. Control efficacy of microbial agents on potato black scurf and Verticillium wilt[J].Journal of Northern Agriculture, 2023, 51(3): 72-77.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2023.03.09

https://journal30.magtechjournal.com/bfnyxb/EN/Y2023/V51/I3/72

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Control efficacy of microbial agents on potato black scurf and Verticillium wilt

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