Field Efficacy of 35% Difenoconazole & Prochloraz EW in Controlling Corynespora cassiicola

The medicament-sifting experiment on five fungicides in controlling Corynespora cassiicola of outdoor cucumbers was conducted. The results showed that 35% Difenoconazole Prochloraz EW had the best effects and the control efficiency was 78.81%-82.21%, and 25% Prochloraz ME and 70% Thiophanatemethyl WP came second, with their control efficiency of 78.56%-82.07% and 76.61%-81.61%, respectively. These three fungicides didn't have the most significant difference and all had better control efficacy. So they could be popularized and applied to the crop production. But 10% Difenoconazole was the worst, with the control efficiency of 59.45%-62.49%, having the most significant difference compared with the first three fungicides.