How to improve the efficacy of the rainy season
During the growing period of the crop, the continuous weather in the event of rain and rain will seriously affect the effectiveness of pesticides in controlling pests and weeds. According to experienced farmers, the following measures can be adopted to reduce the impact of continuous rain on the efficacy of the drug.
Select pesticides. Many types of pesticides, rainy weather, the use of sucking, quick-acting and cream pesticides to prevent pests and diseases, the effect is better. Such as systemic pesticides such as carbofuran, dimethoate and other insecticides, carbendazim, rice indole, metalaxyl and other fungicides, glyphosate, glyphosate, oxalid and other herbicides, several hours after application. Most of the pesticides are absorbed into the tissues by the stems and leaves of the plants. Even in case of heavy rain, they have little effect on the efficacy. Fast-acting pesticides, such as most pyrethroid pesticides, have a strong contact and fumigation effect and have a very high insecticidal effect within a few hours after application. EC pesticides, such as 50% dimethoate, can form a layer of oil film on the plant surface after application to enhance the ability of pesticides to resist rainwater erosion.
Add adhesive. Adhesives can enhance the ability of the drug to adhere and improve the ability of the drug to resist rainwater erosion. According to the different types of pesticides were added separately, powder pesticides can be added to the appropriate amount of soybean meal, flour, flour, etc., wettable powder and water, emulsion pesticides by adding water-soluble adhesives such as animal bone glue, resin, etc., can greatly increase the application Drug effect.
Improve application technology. According to the pharmaceutical performance, choose the appropriate method of application, such as the systemic insecticides carbofuran, omethoate, the use of root zone application methods, to avoid rain erosion. Can also be based on pest habits, timely fight drugs, such as leafhoppers feeding at night, in the evening application, the effect is better. For the Chinese cabbage downy mildew that releases spores at night and in the morning, it is very effective to choose the pesticide in the morning. If you can catch the gap in the rain and grab a quick-acting pesticide, you can also receive better results.
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