Objective tudy was designed to screen the fungicides for controlling pathogens of persimmon anthracnose by laboratory and field test.

Method 4 representative persimmon anthracnose strains collected from Qingzhou of Shandong Province, Gongcheng of Guangxi Zhuang Autonomous Region, Luanchuan of Henan Province and Fuping of Shanxi Province, were selected as the trial materials. By comparing the minimum inhibitory concentration (MIC) value and the concentration for 50% of maximal effect (EC₅₀) value of 22 kinds of fungicides belonging to 10 categories to decide the inhibition activity of each fungicide. 5 kinds of fungicide were finally selected to conduct field trials.

Result The results show that: benzimidazole, demethylation inhibitor and benzene-pyrrole acted better, the MIC values were below 10 μg·mL^-1, and the EC₅₀ within the scope of 0.011 2-0.520 3 μg·mL^-1. Field trials demonstrated that the inhibition efficacy of 30% difenoconazole WG (1500×), 240 g·L^-1 thifluzamide SC (2000×), 240 g·L^-1 pyraclostrobine SC (1000×), 25% prochloraz EC (2000×), 25 g·L^-1 fludioxonil SC (1000×) were between 18.72%-47.76% when investigated 10 days after the fourth spraying.

Conclusion The speed of onset and final control effect of fludioxonil and prochloraz were better than the other three kinds of fungicides.