There are many kinds of grape diseases, and there are more than 60 kinds of recorded diseases. There are more than 10 kinds of diseases that occur in the production, such as grape downy mildew, brown spot, black pox, white rot, anthrax, and diseases. Blight and so on. Blackpox is one of the major diseases that affect the high yield and quality of grapes.
Occurs on all parts of the green plant tissue, such as tender fruit, fruit stems, leaves, petioles, new shoots, and even tendrils. The green fruit is killed and begins to have dark, dark brown spots. It gradually expands to a diameter of 5 mm or more. The central depression of the lesion is grayish-white with purple-brown to black edges. It resembles a bird's eye. Like a bean, it is named after a blackpox disease. Occurs in other parts of the grape plant and the lesions are irregular. Occurs on the leaves. In dry conditions, the lesions can fall off and form perforations. The color of the lesion is dark and dark, and the center is grayish and slightly sunken. When the environmental humidity is high, milky white mucilages can be produced on larger lesions for their common features.
Prevention methods.
1. In the early spring, use the “General Tree Guard†to clean the garden. Cut off diseased tissue to reduce the source of overwintering.
2, in the flowering, young fruit period, fruit expansion period of each spray 1 "melon fruit Zhuang Ti Ling" solution, timely spraying 1:0.7:200 Bordeaux mixture or "General tree care" solution or green copper 600~800 times liquid. Promote the quality of fruit development and increase natural resistance.
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