Continuously reverse the use of pesticides has a good effect

We know that when applying the same pesticide for field management, it starts to work well. After two to three times of application, pests and diseases are prone to drug resistance, and pesticides should lose their effectiveness. Therefore, it is necessary to reverse the use of different pesticides. The control effect is better.
When biological pesticides and antibiotic pesticides are used in rotation, the formation of resistant populations in biological populations can be blocked. Alternate medication is the use of pesticides with completely different mechanisms of action during a certain growth period of the plant. Alternate medication can improve the effectiveness of the treatment, but also extend the useful life of some excellent pesticides. For example, pesticides such as organophosphorus preparations, pyrethroid preparations, carbamate preparations, organic nitrogen preparations, and biological preparations have different mechanisms of action. Pesticides in the same type of preparations can also be used interchangeably, but it is necessary to understand whether there is cross-resistance between them. For example, after the mites have become resistant to dimethoate, dichlorvos can not be used, because mites can also produce dichlorvos. Resistant, but you can choose to kill pine. In the fungicide, general systemic fungicides are more likely to cause drug resistance, such as benzimidazole insecticides (carbendazim, thiophanate, etc.), antibiotic fungicides, etc.; but contact fungicides are not easy to cause Resistance, so the best combination of rotation, such as Daisen, inorganic sulfur, copper preparations are better round varieties.


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