Grape planting techniques: what are the diseases of summer grapes?

What are the diseases of summer grapes? Please introduce and introduce the control methods of grape planting in summer, especially the prevention and control of black pox, white rot, anthracnose and downy mildew. Give priority to prevention and spray in time. For drugs with a residual period of 17 mi for 21 days, the drug is generally sprayed every 15 days. If it rains in the middle, depending on the rainfall, shorten the next spraying days as appropriate. If there is heavy rain after spraying, it will be sprayed again after it clears up. If the adjacent two kinds of drugs are alkaline or acidic respectively, we should pay strict attention to the interval time to prevent the two kinds of acid and alkali from neutralizing. See the initial onset of the disease, timely treatment. Grapes are most susceptible to disease when it is overcast and rainy, hot and humid, so make a comprehensive observation in the vineyard once a day. Spray symptomatic medicine at the beginning of the disease. For the prevention and control of downy mildew, 70% Kobo 600x solution, 80% ethyl aluminum 300x solution or 1 ∶ 0.7∶ Bordeaux solution can be used for the control of downy mildew. Mainly Bordeaux liquid, suitable for other drugs. In the process of grape disease prevention, Bordeaux liquid should be used to adapt to other drugs, and the disease control effect is better. It can spray 1 ∶ 0.5 ∶ 240x before flowering, 1 ∶ 0.7 ∶ 220x after anthesis, 1 ∶ 0.7∶ 200x during the expansion period of grapes, 1 ∶ 1 ∶ 180x after harvest, and 1 ∶ 1 ∶ 160x twice in autumn. If diseases such as white rot and anthrax occur in the middle, they can be sprayed symptomatically, but most of the drugs for the prevention and treatment of these diseases are acidic, and the products must be tried out in a small area before being used in a large area. Loosen the soil in time to increase soil permeability. In rainy season, especially after heavy rain and heavy rain, the surface of the vineyard will be hardened and the soil will be poorly ventilated, resulting in lack of oxygen in grape roots, weakening of tree potential, reduced resistance and susceptibility to disease. Therefore, the soil should be ploughed before the rainy season. In the rainy season, we should seize the time between rainless days and plough the vineyard to increase the permeability of the soil. Clean the accessory tip to facilitate ventilation and light. In rainy season, grapes are most likely to grow, and the incidence of secondary shoots is very high. It is necessary to pick the heart of the grapes and wipe off the secondary tips in time. At the same time, some of the plants with too many new shoots should be removed. Clear the garden at the right time to curb the spread of the disease. The hot and humid environment is conducive to the spread of germs, so it is necessary to clear the garden at any time, remove the diseased leaves, branches and fruits from the garden, bury them deeply or burn them. At the same time, get rid of weeds in the garden in time. Click to get more grape planting techniques click to get more fruit planting techniques