Spotted wilt disease is a common disease in tomato cultivation. If it is not timely prevented, it will lead to severe reduction or even failure of tomato. So what should I do with tomato spotted wilt disease? This article will introduce the preventive measures for tomato spotted wilt disease.
After the disease was infected in the seedling stage, the young leaves were curled in copper, and there were many black spots on the leaves. The purple veins on the back of the leaves were chlorotic, the stalks produced faded streaks, and the diseased plants grew slowly or dwarfed, deciduous, wilting, atrophy, yield. Decreased, in severe cases, the plant directly wilted and died, this symptom is easily confused with the streak virus. When the tomato is infected in the fruiting stage, the surface of the fruit appears green and raised ring spot, the wheel pattern is not obvious, or the brown necrotic spot of the tumor-like protrusion can cause the disease fruit to fall off. If the fruit is infected when the fruit is mature, the spot of the lesion is obvious, and the green spot is most obvious in the colored period. When the fruit is severe, the fruit is stiff, the lesion is brown and necrotic, and the umbilical symptoms are easily confused with the umbilical rot. .
For tomato spotted wilt disease, if it is not the right medicine, it will be difficult to obtain effective prevention and treatment. Therefore, many vegetable farmers have a headache for tomato spotted wilt disease. Tomato spotted wilt disease is transmitted naturally through plant hosts, mainly through sucking or pests such as aphids, locusts, and thrips. At the same time, high temperature and drought Conducive to the onset. The field management is poor, and the diseased and healthy plants in the farming operation rub against each other, which can also cause disease. At present, there is no direct and effective prevention and control measures for the virus, and it can only be prevented and controlled by measures such as controlling sucking pests and strengthening farming. In the shed room, 15% Isopropyl fumigation insecticide is used, 250g per acre, and weeds are removed at the same time; yellow wormwood board can be hanged in the shed for prevention and control, strong seedlings are cultivated, and diseased plants are removed; after tomato planting, thorns are found Suction pests, timely control with 10% imidacloprid wettable powder 1500 times liquid, can also be sprayed with 25% Aketai water dispersible granules 1500 times spray, spray to the base of the stem to kill the root larvae and pupa. It can be controlled by 20% morpholinium, copper 300 times solution, or 300 times of lentinan, and has certain effects on tomato mosaic virus disease and spotted wilt virus disease.
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