Anthracnose
(1) Completely remove sick ears, diseased vines and diseased leaves to reduce the source of bacteria.
(2) Strengthen the cultivation and management, timely schooling, binding vines, and picking up the heart to make the rack ventilation. Increase the application of phosphorus and potassium fertilizers, control the amount of nitrogen fertilizer (3) in the bud into a ball period, spray once or 100 times as special eradication agent.
(4) In the northern part of May spraying, 80% of anthraquinone may be sprayed with 700 to 800 times liquid, or mancozebite may be 800 times liquid.
Grape white rot
(1) Completely remove diseased branches, diseased ears and diseased leaves.
(2) timely pruning, timely weeding, pay attention to drainage. For leggy plants, nitrogen fertilizer is strictly prohibited before flowering.
(3) After the grapes are unearthed, spray 5 degree lime sulfur or 100 times chlorothalonil.
Grape Downy Mildew
(1) Remove fallen leaves, bury buried or burned branches.
(2) timely picking, pruning, drainage and weeding, increasing phosphorus and potassium fertilizers.
(3) Spraying should begin at the beginning of the disease. Before the onset of disease, Bordeaux's solution has the best effect; if downy mildew occurs, it should be sprayed with 25% metalaxyl 700 times in time.
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