From the south to the north of the province, the adult sweet-spotted larvae of soybean have gradually entered the peak period from the end of July to the end of August, which is an effective application period to prevent the damage of borers.
Before the end of July, the last time the land has not yet been completed, it is necessary to pay close attention to soil cultivation, reduce the amount of earthworms unearthed, reduce spawning, reduce the incidence of larvae can also reduce the rate of insects.
According to the forecast of the local plant protection department, or according to their own observations on the amount of adult soybeans observed, or according to the control period of the calendar year (the southern part of late July, the beginning of the north central and early August) spraying control. Each hectare is administered with 2.4% emulsified EC 500ml~600ml, or 5% with Fortune EC 300ml, 2.5% Kung Fu EC 400ml~500ml, and general watered with 400~600kg spray.
In rural areas, it is also possible to use 8% of dichlorvos 1500-2000ml (ha of hectares) to make poison sticks with corn sticks, sorghum sticks, etc., and insert one for every 4 to 5 meters to fumigate and drive away adults. Sand, cloth or other carriers can also be used to spread the soybean field after the invasion of the drug to achieve the purpose of deworming, and fewer eggs can be laid by the adults, which can reduce the number of insects. But pay attention to joint defense.
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