Eggplant leaf spot occurs only on the leaves. The lesions are round to irregular in shape, with a diameter of 4-10 mm, and the enlarged edges are distinctly brown to gray-brown. There is a yellow halo on the periphery, and the lesions on the back of the leaves are dark brown in color, with dense mycosis (conidia and conidiophores). In severe cases, the lesions are densely covered and linked into blocks, and the diseased leaves are withered. The main pathogens of mycelia are the wintering of mycelium in the body of the disease, and the conidia are produced in the second year. The damage is caused by airflow. High temperatures and high humidity are easy to cause disease.
Control methods
Avoid dense planting, good ventilation and light transmission between lines. Spray fungicide: 78% Cobo WP 500 times; 80% WP wettable powder 600-800 times; 75% chlorothalonil wettable powder 500 times; 50% carbendazim WP 500- 1000 times liquid spray once every 10 days, a total of 2-3 times.
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