This year, there are many hot and rainy weather in the country, which is very likely to cause serious high incidence of pests and diseases , and will also affect the efficacy of pesticides, bringing great difficulties to prevent and cure diseases. So how do you use pesticides in such weather? What should you pay attention to during the application? Let's talk about how to use insecticides when it is hot and rainy.
How to use pesticides when it is hot and rainy?
The method of using insecticides when it is hot and rainy:
1. Improve pesticide utilization
When using pesticides for open-air crops, they should be selected to be resistant to rain. The ratio of emulsifiable concentrates is appropriate. These pesticides have a long residual time on the surface of the plants, while powders and liquids are relatively poor. The adhesion substances such as washing powder and tea leaching solution can be added to the pesticide, which can enhance the adhesion of the pesticide on crops and pests, thereby improving the control effect. The method is as follows: 50 to 75 grams of detergent powder is added to each 50 kg of the liquid medicine, and the mixture is evenly sprayed and sprayed in time. Note that it is best to use it now, not for a long time. Washing powder and tea leaching solution are generally not suitable for mixing with acidic pesticides.
For ease of use, special synergists such as ultra-run, silicone, and the like can also be used.
2. Choose the right pharmacy
1 quick-acting pesticides. Such as insecticides such as leaf insect net, killing pine, killing enemy, killing spirit, deltamethrin and other pesticides, have a strong contact and fumigation effect, 1 to 2 hours or 4 to 5 hours after application The pests can be killed.
2 systemic pesticides. Systemic pesticides can enter the plant through the roots, stems, leaves and other parts of the crop, and transport to other parts, which will work in a short period of time. For example, powder rust, powder rust, mad killing and other bactericidal insecticides, 80 to 4 hours after application, 80% of the active ingredients are absorbed into the tissue by the crop, less loss of medicinal properties due to rain leaching.
3 microbial active pesticides. Commonly used microbial pesticides such as green worm and Beauveria bassiana are more favorable for the germination and reproduction of sporophytes under high humidity conditions. The application of such pesticides on rainy days can fully exert their pest control effects.
4 washable pesticide fungicide . Zhongjinggangmycin, Herbicide, and Suikeling have good rain resistance. Even after showering for 1 to 5 hours, they will not be washed and affect the efficacy.
The above are the methods and precautions for how to use pesticides in hot and rainy weather. The weather is more varied this summer. Everyone should make timely preparations according to the weather conditions and use pesticides scientifically and rationally.
More pesticide knowledge , please pay attention to China Pesticide Network
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