The best time to spray pesticides in summer and autumn

Many of our farmers' friends know that spraying foliar fertilizer should avoid the evaporation of foliar fertilizer in the sun at noon in the midday sun, affecting the absorption of the leaves and avoiding the noon time when the sun is too strong, but I don’t know if it should be used when spraying pesticides . Spray the foliar fertilizer. The author found that many farmers like to spray pesticides when the temperature is high at noon. It is considered that the high temperature at noon and the easy killing of pests are actually unscientific. It should be noted that at noon, the temperature is high but the light is strong. The pests are usually hidden on the back of the plant and the stems and fruits of the plants. The midday liquid is easy to decompose and volatilize, so the insecticidal effect is poor. In addition, the high temperature at noon, the liquid is volatile, and it is easy to cause poisoning. The best spraying time for crops, whether in food, vegetables or fruits, the best time is from 8:00 am to 10:00 am. At this time, because the dew is dry, the temperature is not too high, it is the sunrise pests feeding and living the most. When it is strong, the medication will not be dilute with the liquid, and the liquid will not be decomposed and the effect will be reduced because of the high temperature. Instead, the sunrise pest will increase the chance of taking medicine and taking medicine; or in the afternoon. Before and after 5 o'clock, after 5 pm, the sun is westward, the light is getting weaker, the temperature is decreasing, and the night-borne pests are about to start activities. At this time, pesticides are sprayed, and the pests come out to eat at dusk and at night, which can effectively Kill night-time pests.

Therefore, farmers should choose time to spray pesticides in summer and autumn. They should not rely on subjective imagination and past experience to give full play to the maximum insecticidal effect of pesticides and avoid pesticide poisoning.

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