Watermelon main disease prevention method
2022-10-10 06:04:32
The main diseases of cultivated watermelon in summer and autumn are virus disease, wilt disease, and blight disease. From the seedling stage to flowering and fruit setting before the main virus control period, the general choice of virus or virus A spray, every 7d spray control 1. Insect pests mainly include aphids, Spodoptera litura, Spodoptera exigua, etc. They can be controlled by dimethoate and trichlorfon. Fusarium wilt be used before the onset or early onset with 50% Skoda 1200-1500 times, or 50% thiophanate-methyl wettable powder 500-600 times, or 50% polymyxin WP 500-700 Double liquid irrigation and control, every 7d1, continuous irrigation 2 to 3 times. In the early stage of the disease, 70% Mancozeb WP can be used for the disease, 500 to 600 times, or 600 to 800 times for the 50% thiophanate-methyl wettable powder, or 500 to 700 for the 50% polymyxin WP. Double liquid spray, once every 7d, spraying 2 or 3 times.
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