Control efficacy of 30% ai-miao EC on sheath blight, rice false smut and purple stem disease of direct seedling rice

Control efficacy of 30% ai-miao EC on sheath blight, rice false smut and purple stem disease of direct seedling rice were studied. The results showed that, application of 1500 times of 30% ai-miao EC in rupturing stage and full heading stage could both obtain the best control effect, which the controlling efficacy was over 83% on rice false smut, over 70% on rice purple stem disease, and over 77% on sheath blight, and the yield of rice was increased to some extent.