Usually occurs from mid-June to mid-July. The leaves were pale yellow at the time of initial development, followed by round brown lesions, and finally black necrotic pits. The young fruits were mostly deformed after being affected. The disease is severe at 95% relative humidity and 24°C.
Control methods:
1. Strengthen the cultivation and management, and reasonably top-dressing to promote the robustness of plants and enhance the ability to resist disease and disease.
2. Drain and drain in time to reduce humidity.
3. After onset, 65% of mancozeb and trehalose 500 times spray can be used. Spray once every other week. Generally, it can be sprayed 2-3 times.
4. Remove the diseased plants and diseased leaves in a timely manner so as to “prevent small and prevent early†so as to reduce the source of re-infection.
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