Eggplant M.blight mainly harms fruits, leaves, stems, flower organs and other parts. The fruit on the ground was first attacked, and the fruit was spotted with water-like round spots. It was slightly sunken and the flesh turned dark brown and rot. It was easy to fall off. When the humidity was high, the dense white cotton wool-like hyphae grew on the surface of the diseased part and rapidly expanded. The disease will soon be corrupted. The stem was infected with water-stained at the initial stage, darkened green or purple-brown afterwards, the diseased area contracted, and the upper branches drooped; when the humidity was high, the sparsely white mold was born. The leaves of the victim were irregular or near-circular water-stained brown-brown to brown spots. There was a clear ring vein. When the damp spot appeared sparse white mold, the seedlings were easily injured causing tripping.
Second, prevention and control measures
(1) Selection of disease-resistant varieties, such as "Selected No.1" and "Xingcheng Purple Eggplant".
(2) Implement crop rotation, use suitable high and low levels, convenient irrigation and drainage fields, dig deep in autumn and winter, apply sufficient quality and sufficient maturity of organic fertilizer, and adopt high ridge or semi-high ridge cultivation.
(3) Time cultivating and pruning, removing diseased fruits and diseased leaves, covering with plastic film, and increasing phosphorus and potassium fertilizers.
(4) Disinfect the soil with hymexazol before planting.
(5) Chemical control, 72.2% Preclosures 700-800 times the initial stage of disease, or DuPont's rapid suppression of 1000 times the net spray.
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