Scientific management of control of persimmon round spot disease

Round spot disease mainly damages persimmon leaves and persimmon vines. Leaves suffer damage. Small round spots appear at the beginning. The front is light brown and has no obvious edges. After that, the color gradually deepens. When the disease is severe, the diseased leaves can turn red in a short time and fall off. Persimmon fruit was left, and then the persimmon fruit became red, soft, and shedding. The lesions on the persimmon were round and brown. The appearance time was later than that of the leaves. The lesions were generally smaller, and the tree vigor was weak and the incidence was heavier.

After the persimmon trees fell and the ascospores were scattered, they were sprayed with 800 times the new high-fat membrane to prevent the insects from repelling and infect the pathogens and reduce the incidence of diseases. Add base fertilizer, do a good job of water and fertilizer management, ensure that the tree needs adequate nutrition, spray persimmon before the flowering, young fruit and fruit expansion period, enhance persimmon suction fertilizer strength, ensure that the tree is robust. After picking the persimmon to June of the second year, the fallen leaves were completely removed and burned or buried deeply. The general tree guard was sprayed to disinfect and reduce the source of infection.

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