How to prevent tomato pests in greenhouse
Tomato virus disease is transmitted from seeds, diseased plants, diseased fruit, aphids, whiteflies, and helpers. High-temperature and drought conditions are heavy, soil calcium deficiency, potassium deficiency, and zinc leaf mosaic disease are heavy. At present, there are no specific drugs for the prevention and treatment of viral diseases. The prevention and control of the disease should adopt the principle of “prevention-based, comprehensive prevention and control†as the principle of plant protection work to minimize the occurrence of viral diseases. The following measures should be taken:
First, use resistant varieties.
Second, the seed treatment, with potassium permanganate 1/1000-2/1000 solution or soda phosphate 10/100 solution soaking.
Third, the occurrence of whitefly, aphid after the timely spraying control, commonly used agents are: 25% buprofezin WP 1000-1500 times, 3% acetamiprid EC 3,000 times, 25% acryl water dispersion Granules 2000-3000 times, 2.5% Uranus EC 2000-3000 times, 1.8% abamectin EC 1500 times and other agents spray control.
Fourth, the greenhouse cooling: a shade net is set on the shed to cool the water.
5. Avoid high-temperature virus disease during the colonization season.
6. Remove the episode or remove the diseased organ to prevent transmission.
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