Five tips for winter medication
In the twinkling of an eye, the temperature has dropped linearly. How do you use pesticides to improve the efficacy at this time? Pesticide Xiaobian compiled five tips for winter medication:
1. Choose the medicine for sunny days and high temperature. Because the pests in the winter when the temperature is high, the feeding and breathing intensity is greater than the cold weather, the liquid is sprayed onto the worm body, and the drugs are brought to the body more, which is beneficial to play the poisoning effect.
2. Appropriate increase in dosage. The specifics should be based on the temperature, but generally do not exceed 50% of the regular dose. It is necessary to add water strictly according to the dilution factor, and it is not possible to increase or decrease the amount of water at will.
3. Reasonably select pesticides suitable for winter application. In general, stomach poisons and contact agents are less affected by temperature, and systemic and fumigants are more affected by temperature. Such as enemy killing, dichlorvos and other pesticides, low temperature will significantly affect its insecticidal effect; and deltamethrin, phoxim, stone sulfur mixture and other pesticides, at lower temperatures can still play a better insecticidal effect.
4. Give priority to the use of soil pesticides. Fruit trees are resistant to pesticides during the winter dormancy period. It is economical and effective to control pests with pesticides such as Bordeaux mixture and stone sulphur mixture.
5. Pay attention to extending the safety interval. When pesticides are applied in winter, the degradation rate of pesticides becomes slower, and the residual period of pesticides in crops is also relatively prolonged. When controlling pests and diseases of vegetable crops in winter, special attention should be paid to prolonging the safety interval of pesticides to ensure human health.
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