Yantai City, Shandong Province, a fruit grower Q: grape powdery mildew found on the fruit, how should prevention?? Shijie A: It is recommended to cut off with a powdery and downy mildew of fruit on the blades or vanes and the ear, and then spraying the drug for prevention of azoles, but potassium can significantly hinder the discharge of powdery mildew the germ tubes penetrated tissue, such as dihydrogen phosphate? potassium liquid discharge 350 times, or with ash also has a good effect. At the same time, as temperatures rise, increased humidity, grape Choushao Yu Guangzhou, the disease also will be reminded growers early prevention of downy mildew, powdery mildew, gray mold, should keep an eye? Axis brown blight, available Amistar prevention.