Four methods for controlling corn borer in wintering period

Corn borer mainly harms crops such as corn, sorghum, cotton, hemp, pepper and cowpea, and uses mature larvae for wintering in the straw, cobs, and roots of host plants such as corn and sorghum. The amount of insects in the straw usually accounts for about 75% of the overwintering insects. According to its overwintering law, taking appropriate measures for prevention and treatment in the winter can often receive a multiplier effect.

First, the treatment of straw in winter or early spring, through the use of corn, sorghum and other host crop stalks for fuel, feed, fertilizer and other ways to be treated, can greatly reduce the source of overwintering. In places where conditions permit, the use of mechanical smashing and returning to fields not only kills a large number of overwintering larvae, thus reducing the number of worms, but also fertility.

Second, promptly threshing corn harvest, it is timely drying, threshing, eliminating pests in winter over the cob.

3. Deep plowing combined with winter plowing in winter, turning up the roots of host crops such as corn and sorghum, and burning them centrally.

Fourth, use Beauveria bassiana to seal the larvae 10 days before the winter larvae pupa, the Beauveria bassiana powder layered spray in the host straw worms, 100 to 150 grams of bacteria powder per cubic meter, the effect is good.

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