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For example, the dark larvae larvae like to eat fat and protein-rich foods. The third-instar larvae of peanuts, soybeans, and corn have an average body weight of 0.99 g, 0.82 g, and 0.63 g, respectively. Female adults lay 40 to 90 eggs, up to 200. The peanut field is the most hazardous and the occurrence of corn and millet fields is small.
Second, the physical control of the use of dark, green and other adult insects phototaxis, light trapping.
Combine picking peanuts at the time of harvest, pick up mature larvae and concentrate on killing.
Third, chemical prevention
1. When sowing 1.0 kg per acre to meet the standard of "killing insects (812)" medicine fertilizer cover species or with the chemical fertilizer applied underground, prevention and control of unearthed adults. In the areas where heavy rainfall occurred over the years and in the end of June, 1.0-1.5 kg were also applied to the strains to prevent and control adult and newly hatched larvae.
2. In June, the field of adult activity was observed from 8 to 9 pm in the evening. When the number of adults significantly increased, in addition to spreading the pesticide to the peanut plants, insecticides were sprayed on the eucalyptus, poplar and shrubs.
3. Emphasize the prevention and control of widespread drug use in large areas, and increase the frequency of application of pesticides in key plots.
First, rotation for corn, millet, sorghum, peanut rotation every other year or a few years, can disrupt the food chain, reducing its reproductive capacity, thus reducing the damage.