Studies on control of teflubenzuron and tebuconazole to Blumeria graminis (DC.) Speer.

Teflubenzuron and tebuconazole were new fungicides belonging to triazoles and their controls on Blumeria graminis(DC.) Speer was investigated in this paper.The result showed that the control effect of teflubenzuron and tebuconazole was over 70 % with each application concentration after 14 days,the control effect of teflubenzuron was over 90 % at higher concentrations and the control effect of tebuconazole was over 85 % after 30 days.Moreover,25 % tebuconazole EW had better control effect than 80 % tebuconazole WP at the same concentration.Therefore,25 % tebuconazole EW and 80 % tebuconazole WP were good fungicides to control Blumeria graminis(DC.) Speer.