Labaratory toxicity and field control efficiency of 7 fungicides to wheat scab in Jingzhou city

doi:10.14088/j.cnki.issn0439-8114.2021.12.014

Abstract

Abstract: In order to screen out the fungicide with better control effect on wheat scab in Jingzhou city, the field control and indoor antibacterial activities of 7 pesticides against wheat scab were determined with the field spray method and the mycelial growth rate method. The results showed that the four original drugs of prochloraz, tebuconazole, phenamacril and pyraclostrobin in the laboratory toxicity test have good antibacterial effects for the wheat scab, and the inhibitory concentrations （EC₅₀） were 0.028, 0.114, 0.427, 1.554 mg/L, respectively. And the field results showed that the seven pesticides had good control effects against wheat scab. Prochloraz EW had the highest control effect of 88.60%, followed by prochloraz EC 83.53% and pyraclostrobin SC 82.13%, respectively. The control effects of the 25% prochloraz EW in the test agent was significantly higher than other pesticides, and it can be preferably used in the field.

Key words: fungicide, wheat scab, labaratory toxicity, field control effects

CLC Number:

S482.2

CHANG Yue, ZHU Xiang, MENG Zhen-guo, DONG Qian, WANG Jin-peng, LI Jun-kai. Labaratory toxicity and field control efficiency of 7 fungicides to wheat scab in Jingzhou city[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(12): 73-75.

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