How to Prevent Vegetable Diseases in Spring

With the temperature rising in spring, the hot climate and high humidity of the vegetable fields, especially the cultivation of facilities, are conducive to the spread of vegetable diseases and prevention should be strengthened.

Experts pointed out that the general situation is that the seedling stage disease: vegetable seedling disease mainly includes damping-off disease and blight. Both are often mixed on the bed and cause serious deaths. Botrytis cinerea: It mainly occurs in leafy vegetables such as greenhouse tomatoes and eggplants such as solanaceous vegetables and leeks, and the current weather conditions are conducive to the spread of the disease. Sclerotinia: The disease is the main disease in greenhouse vegetables in recent years, mainly in eggplant, green peppers, lettuce and other vegetables on the serious, showing a trend of increasing year by year. Downy mildew: occurs in lettuce in fields and greenhouses, but light in the field, but it generally occurs in greenhouses. The incidence of adult plants is more important than that of lettuce during seedling stage.

According to experts, prevention and control measures are urgently important. Prevention and control of vegetable diseases in greenhouses should be based on comprehensive prevention and control measures that combine prevention with prevention and chemical prevention. Agricultural control: timely cleaning of the pastoral areas, timely removal of the sick and diseased plants and taking out of the field, focal length treatment, should not throw or dump the diseased plants into the ditches to prevent cross-infection; strengthen greenhouse ventilation and cooling. Chemical prevention: seed disinfection before sowing can reduce seedling disease. Seedling disease in the early stage of disease, immediately remove the diseased seedlings, after the selection of 75% chlorothalonil wp800 ~ 1000 times or 50% of the United States and the United States and wp500 times doubled, uniform spray control. Secondly, 50% quick-inking WP1000 liquid can be used for even spraying, which can effectively control various diseases such as gray mold, sclerotinia, and early blight. Finally, 50% sterilization into water-soluble powder 1000 ~ 1500 times the liquid can be evenly sprayed, can effectively control downy mildew.

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