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First, improve the utilization rate of pesticides.
Pay attention to increase the adhesion of the agent. When using pesticides for open-air crops, they should be selected to be resistant to rain, and emulsifiable concentrates are suitable. These pesticides have a long residual time on the surface of the plants, while powders and liquids are relatively poor. Many crop types have fluff or thick waxy layers on the surface of the leaves, such as corn, green onions, ginger, taro, etc. The liquid is easy to form droplets on the villi and waxy layers, and cannot fully contact the surface of the leaves of the plants. Adding an auxiliary agent such as silicone to the medicine to enhance the effect of the medicine.
Second, appropriate reduction of the concentration of the agent
The efficacy of most pesticides will increase with the increase of temperature, so the dosage of the liquid should be reduced when using the drug in high temperature season. Especially the hormonal drugs are especially noticeable, and the drug dosage is very easy to cause phytotoxicity. occur. Therefore, it is necessary to adjust the concentration of the agent according to the change in temperature.
Third, pay attention to the quality of the spray
In fact, when the crop is sprayed, the pesticide droplets that can adhere to the surface of the crop leaves are limited. When the spray amount exceeds a certain limit, the fine droplets on the leaves will condense into large droplets and roll off and lose. Reduce the amount of pesticide attached to the blade. The spray method generally requires uniform distribution of the spray droplets and high coverage, so that it is not necessary to drip the surface of the wetted plant, so that the sprayer used is required to have a good atomization effect and reduce the waste of the liquid. At the same time, it is necessary to pay attention to the comprehensive spraying, especially some pests like to lay eggs on the back of the leaves, especially when spraying the medicine.
Fourth, reasonable spraying to prevent poisoning
Dispensing and applying drugs should prevent pesticides from corroding the skin. When using volatile pesticides, be sure to use masks. At the same time, it is forbidden to spray pesticides at high temperature during noon in summer. Spraying in summer should be done before 9:00 am or after 4 pm to avoid phytotoxicity. happened. Do not apply too long for continuous application.
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How to use pesticides safely and reasonably during hot season
The safe use of pesticides has always been a concern of vegetable farmers, but it has not attracted everyone's attention in actual production. Blind medications are still happening, resulting in serious waste of pesticides, frequent drug damages; and poisoning for pesticides. Especially in the hot season, these conditions are even more prominent. To this end, the farmers are reminded to use the medicine rationally.
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