The selection of pesticides must be quasi-winter to prevent crop pests and diseases, and care should be taken to select pesticides that are less affected by temperature. In addition, in the prevention of diseases and pests in the dormant period of fruit trees, the use of mineral oil emulsions, pine ester mixture, lime sulfur and other soil pesticides, both economic and effective.

The dosage of pesticides should be applied in winter, and the dosage should be appropriately increased and the concentration of the liquid medicine should be increased under the guidance of a professional, but it must not exceed the “safety high concentration” (that is, the maximum allowable dosage for which no phytotoxicity occurs).

If the timing is better, then the pesticide should be applied during the sunny days when the temperature is high, the range of activity and respiratory intensity of the pests will increase, and the food intake will increase. At this time, the application of pesticides will improve the control effect.

Methods To prevent and control greenhouse pests and diseases in greenhouses in the winter, smoke or dust should be used as far as possible. If spray application is used, the number of controls and the amount of liquid to be sprayed should be appropriately reduced to prevent excessive humidity in the shelter.

In the long cold season, the degradation rate of pesticides is slow, and the time left in the crops is relatively long. It is necessary to extend the number of days from the last application of crops to harvesting to ensure food safety.

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Breathe Oxygen Series

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