How to use pesticides in the hot season is reasonable
1. Pay attention to increase the adhesion of the drug. 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. For many crop types, there are 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.
2. Properly reduce 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.
3. Pay attention to the spray quality
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.
4. Reasonable spraying to prevent poisoning
Pharmaceutical, pesticide spraying to prevent corrosion of the skin, the use of volatile pesticides must pay attention to the use of masks, while prohibiting the midday heat in summer time spraying pesticides, spraying summer should be selected after 4:00 pm or before 9:00 am to avoid injury happened. Do not apply too long for continuous application. Â
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