The grapes are rotten in the harvest, causing economic losses that cause the fruit farmers to have a headache. The China Pesticide Network Xiaobian teaches you the three-step management rule for rotten fruit during the grape harvest, as follows:
Strengthen management. Discharge and loosen the soil in time after rain; timely tying the vines, picking the heart, keeping the frame ventilated and transparent; adding potassium, calcium and trace elements, spraying plant growth regulators (such as green wind 95, must overcharge, high yield insurance, etc.) Improve leaf function, enhance tree potential, enhance disease resistance; control yield and reasonable burden. The yield is determined according to the growth of the plant. Generally, the yield per mu of the adult orchard should be controlled at 2,500-3,500 kg.
Remove the source of the bacteria. After the fall, the diseased debris is removed before the vines are removed from the shelf, and the cleared diseased bodies are burned out. In the autumn, the soil is sprayed 50-100 times before the cold and the spring is unearthed. Sodium pentachlorophenol removes the bacterial source; in the growing season, the diseased leaves, diseased fruits, and diseased vines are removed in time, and the burial is concentrated.
Chemical control. For the orchard that was seriously ill in the previous year, it should be prevented from being sprayed on the ground before the disease occurs.
Pesticide manufacturers recommend taking 1 part of Fumei Shuang and sulphur powder, and mixing them evenly on the ground, using 1~2 kg per mu; or spraying 500-600 times liquid or 50% carbendazim 500-600 The liquid can control the initial infection source from the soil overwintering; spraying the appropriate concentration of Bordeaux mixture in the growing season, spraying once every 10 to 15 days, can reduce the chance of disease infection.
Once white rot, anthracnose and other diseases occur, it is necessary to apply the disease symptomatically, but pay attention to the alternating use of pesticides to prevent the formation of resistance; to prevent pesticide contamination of the ear after fruit coloring, 500 times 2821 or 12% green milk copper 600-800 can be used. Double liquid spray control.
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