Strictly rotated. The affected area should not be rotated with Solanum vegetables. When conditions permit, the rotation should be more than 3 years.
Reform farming practices. Choose easily drained land for planting, deep-lying the exposed land after pulling, and apply decomposed organic fertilizer and phosphorus and potassium fertilizers; use high-ridge cultivation, no flood irrigation, excessive precipitation, excessive water should be promptly ruled out, and appropriate cultivating loose soil.
Sparse and intercropping. Most of the eggplants cultivated in this area are medium-late-maturing varieties, and the plants are tall. Planted dense, poor ventilation and light in the field, high temperature and humidity, poor light in the field, high temperature, high humidity, closed canopy, leading to increased disease, and vice versa. Therefore, the medium-late-maturing varieties used are controlled at a planting density of 1500 to 2,000 plants per mu, and even about 1,000 plants, and they are single-pruned and pruned. It is also possible to intercropping dwarf bean, dwarf cowpea, summer cabbage, and other dwarf crops on the basis of wide ridges and sparse plantings, and still obtain good economic benefits.
Strengthen field management. Timely cultivating and weeding, balancing topdressing and doing whole pruning, removing old yellow diseased leaves at the bottom, and adjustment of rotten fruit plants.
Chemical control. 1. When the tomato seedlings are planted, use 70% thiophanate-methyl WP or 75% enemy powder to compose medicine soil 1:100, and apply 75-100 kg per acre. 2. The initial onset can be used 25% metalaxyl WP 500 times or 80% aluminum phosphate 600 times Irrigation roots, about 150 ml per root near irrigation solution, irrigation every 7 to 10 days. 3. Spray. At the beginning of the disease, it is protected by 1:1:200 Bordeaux spray; it can also be sprayed with 50% ADPMA, Zn, WP 500 times, or 75% chlorothalonil, WP 500 times, or 64% DMF. Wet powder 500 times, etc., sprayed once every 5 to 7 days, depending on the extent of the disease even spray 3 to 4 times. 4. Dip fruit. When the weather is continuously transferred to fine weather, use 70% mancozeb to fight 600 times wettable powder, and add 25% Ledomil WP 800 times to make a mixture. Soak or dip all the eggplants. (Less severely old eggplant removed in advance). Although this method is expensive, it works well and can recover most of the losses.
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