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茄子绵疫病主要危害果实。初发病时,果实产生水渍状近圆形病斑,后变为褐色。低温干燥时,病斑缓慢扩大。高温多雨时,病斑扩大,果实大部或全部变褐软腐,病部长出灰白色稀疏霉层,果实从花萼处脱落。结果期,高温高湿,容易发病。地势低洼、土质粘重、排水不良、密度过大、播种偏晚,均会加重发病。药剂防治:雨季来临前,喷洒1∶1∶200波尔多液;或喷80%代森锌可湿性粉、75%百菌清可湿性粉、50%灭菌丹可湿性粉500倍液,70%甲基托布津可湿性粉剂1000～1500倍液,以预防病害。一般10～15天喷1次,连喷2～3次。
Eggplant powdery mildew is the main hazard to fruit. Early onset, the fruit has water stains like a nearly circular lesion, after turning into brown. Cold spots, the lesion slowly expanded. When the hot and rainy days, the lesion expanded, most or all of the fruit brown and soft rot, the Minister of disease out of gray mildew layer, the fruit off from the calyx Department. Results, high temperature and humidity, easy to disease. Low lying, sticky soil, poor drainage, density is too large, sowing late, will increase the incidence. Pharmacy control: before the onset of the rainy season, spray 1: 1: 200 Bordeaux mixture; spray 80% dextrin wettable powder, 75% chlorothalonil wettable powder, 50% Thiophanate-methyl WP 1000 to 1500 times the liquid to prevent disease. Usually 10 to 15 days spray 1, and even spray 2 to 3 times.