cause:
1. In recent years, the climate has become warmer, and the survival rate of wintering eggs of corn borer is high, and the spring base of insects is large.
2. When it was discovered late, it was not timely prevented.
3. Improper use of seed coating agents. The main reason is that the seed coating composition used and its content did not meet the requirements. It was impossible to control the boreholes of the larvae of the larvae. For seeds that are directly coated, the seed coating used does not contain carbofuran and is not coated twice. The occurrence of corn borer is serious.
Control methods
Must pay attention to the use of seed coating agents, put an end to "white seeds" to the ground. For the seed that has been coated, the seed industry must make sure whether the composition and content of the seed coating used in the seed industry are up to the standards for controlling underground pests and corn borer before selling it, and guide the farmers to use the seed properly; When seeds have been coated, they must be used under the guidance of the seed industry or technical department. If the seed coating agent is not ideal for control of corn borer, it is necessary to re-use a secondary coating containing 8%-10% carbofuran before sowing. The secondary coating should pay attention to the bactericide component of the seed coating used, and if it contains tebuconazole, triadimefon, etc. will have inhibition and adverse effects on the seed germination. In recent years, heavy land masses of corn borer could be applied before sowing with 3% carbofuran granules, focusing on prevention in advance.
Dishwash Liquid,Dish Washing Soap,Dish Washer Detergent,Kitchen Dishwashing Liquid Detergent
Wuxi Keni Daily Cosmetics Co.,Ltd , https://www.wxkenidaily.com