The sweet pepper disease occurs everywhere, but also harm tomato, eggplant, zucchini, winter melon and other vegetable crops. Symptoms Seedlings and adult plants can be infected by leaves, stems and fruits. The roots of the seedling stems are rotted and rotted. The diseased part is dark green, and finally it dies down or falls. Prevention 1. Rotation of crop rotation: 2 to 3 years or more of crop rotation is adopted. Cruciferous vegetables and leguminous vegetables are preferred for the former crops, and melons and solanaceous fruit crops are severely affected. Second, the cultivation of disease-free seedlings: away from the cultivation of pepper cultivation, no pepper garden soil, with no fresh pepper planted Xintian soil, and full enough to apply fertilizer. The diseased seedlings on the bed were removed in time, sprayed thoroughly, and disease-free seedlings were transplanted for cultivation. Third, field management: sorghum planting, appropriate density, reasonable use of water, drainage after rain, cultivating loose soil, to prevent excessive humidity, remove diseased fruit strains, reduce the source of disease, have reduced the incidence of harm reduction. Fourth, chemical control: Before sowing, spraying with 20% methyl-precipitation EC 1000 times soaking seeds for 12 hours, Lek to rinse with liquid water after drying germination sowing. After the colonization, the central diseased plant was found, and the medicine was sprayed in a timely manner to make the plant, the stem base and the ground generally prescribe medicine. Spraying agent can be used 40% triethylphosphonate 200 times, 58% metalaxyl MnZn WP 500 times, 70% EB MnZn WP 500 times, 64% WP WP 500 Times of liquid and so on. The protected land can also use 45% chlorothalonil aerosol, 250 grams per mu, or 5% chlorothalonil dust agent, 1 kg per mu, and apply pesticides after sunset. The epidemics are fast and should be given as soon as possible, 7 to 10 days, and they should be applied 2 to 3 times.
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