Prevention and control of soybean mosaic disease, China Pesticide Network Xiaobian gives you the trick:
First, select soybean seeds should be carefully screened before sowing, manually select the diseased soybean grains, remove brown (black) plaques, and minimize the initial infection source.
Second, the occurrence of disease prevention and control of soybean mosaic disease and the occurrence of aphids and the appearance of high bees are closely related to the early and late, so do a good job in the investigation and prediction of insects, timely spraying drugs to eliminate mites, the locusts are eliminated in the point, film stage Is the key to controlling soybean mosaic disease.
The agents for controlling mites are: 10% insecticide imidacloprid per hectare (big hero, one pass net, sputum, sputum, etc.) WP 300-450 g, 3% Mobilan emulsifiable concentrate 450 ml, water 450 kg spray; or 2.5% green kungfu emulsifiable concentrate 600 ml per hectare, 20% Huifeng gram emulsion 300-450 ml, spray evenly on 450 kg of water.
Third, the pesticide disease prevention in the soybean seedling period, combined with the shovel and timely removal of diseased plants. At the same time, before the onset or early onset of the disease to start spraying drugs to prevent viral diseases, using 2% of the bacteria gram water agent per hectare 1.7 ~ 2.25 kg, spraying 450 kg of water, to achieve uniform spray, no leakage spray, continuous application 2 Times, each interval of 7 to 10 days; or 20 grams of 20% toxic A wettable powder per hectare, spray 450 kg of water, spray evenly, spray once every 7 to 10 days, even spray 3 times. In addition, in July and August, it is also possible to combine the treatment of mites to control the virus disease.
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