Don't spray cotton under three kinds of weather

Windy day

The wind-blown cotton strains were not uniformly affected, which affected the control effect. For this kind of situation, we can use pesticides with strong absorption and penetration. When spraying, the sprayer should be closer to the cotton plant to prevent the mist from being blown away by the wind and cause losses. At the same time, the person must walk in the upward wind to spray medicine to prevent the liquid from being poisoned by the wind blowing into the respiratory tract.

Rainy days

When spraying pesticides to prevent and treat diseases and insect pests on rainy days, the liquid medicine is easily washed by rain and affects the effectiveness of control. In view of this situation, quick-acting pesticides with strong contact and quick knockdown can be used. After the rain or the rainy gap, the concentration of the liquid is appropriately increased to reduce the amount of the liquid, and the spray is quickly and uniformly sprayed on the cotton plant. Rainwater on the cotton plants dilutes the pesticides so that the cotton plants are evenly distributed, thereby improving the control effect.

High temperature days

In particular, there is a hot sun noon, if you need to spray, do not choose to see light easily decomposable pesticides (such as phoxim, etc.) or highly toxic pesticides. Can use high efficiency, low toxicity, high temperature efficiency pesticides. When spraying, reduce the concentration of the liquid and increase the amount of the liquid to prevent the water from evaporating too quickly and causing burns to the leaves and people.

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