How to prevent potato mosaic disease? (with prevention measures)
Recently, many farmers and farmers have consulted in the background of Huinong. What kind of medicine is used for potato mosaic disease? Potato mosaic disease is actually a common disease in potato planting process. When the disease is serious, it will cause a large number of potatoes to be reduced. Therefore, it is urgent to prevent potato mosaic disease. 1. What are the transmission routes of potato mosaic disease? Potato mosaic disease has a wide range of transmission methods, mainly including seed potato carrying viruses, cross-contamination of cut potato chips, soil-borne viruses, and aphid transmission, which can spread and infect potato mosaic virus. At the same time, in case of high temperature and dry weather, and weak plants, it can also aggravate the condition and accelerate the spread of mosaic virus. Second, what are the symptoms of potato mosaic disease? In general, the diseased potato leaves will shrink slightly, and the edges of the leaves will also be corrugated. The entire susceptible potato plant will diffuse outward and diffuse, and the leaves will also diverge and brighten. The susceptible leaves are slightly greenish and appear alternately to form mosaics. At this time, the potato tubers already carry the virus, but there is no symptom of the disease, and there is no difference in sensoryness from the good potato. Third, the prevention and control measures of potato mosaic disease The prevention and control of potato mosaic disease must be combined with the spread mode and characteristics of mosaic disease, so that it can achieve twice the result with half the effort. (1) Selecting excellent varieties When selecting seeds, choose seed potatoes with strong disease resistance, drought resistance and water and fertilizer resistance, and reduce the risk of infection with mosaic virus. At the same time, it is necessary to choose a large breeding company seed potato, which can not only ensure the quality, but also have problems in one type and is easy to solve. (2) Sowing early in time It is mainly to avoid the high temperature period in the potato potato and potato period, and reduce the probability of infection. (3) timely control of aphids Aphids are very unfavorable to the spread of potato mosaic virus. It is necessary to carry out drug control early in the occurrence of aphids, and it is also possible to use water-proof sprays such as phlegm and mites. The fourth is chemical control. Spray with 300% solution of 4% pyrimethamine aqueous solution, 300 times solution of 2% Ningnanmycin water, or 500 times solution of 7.5% bactericidal * morpholine water-repellent agent. The condition can be serious in about 1 week. Spray once. The above is the prevention and control measures of potato mosaic disease, which is summarized by Xiaobian. It is only for the reference of the vegetable farmers. Generally speaking, any disease prevention and treatment is the best in the early stage, and it is also necessary to do preventive work in peacetime!
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