Tips for applying pesticides during the rainy season

In agricultural production, it is often encountered that spring rain continues, autumn rain continues and plum rain, which brings inconvenience to the application of disease prevention and pest control. In order to improve the application effect of pesticides in the rainy season, the following principles should be mastered.

First, the use of systemic pesticides Systemic pesticides can enter the plant through the roots, stems, leaves and other parts of the crop, and transport to other parts, play a certain time. Such as carbofuran, monocrotophos, omethoate, phosphonamine and other insecticides and bactericides such as saponin, carbendazim, triadimefon, thiophanate, syphilis, and kelicin. - 5 hours, more than 80% of the active ingredients are absorbed into the tissues by the crops, and will not be wetted by rain and lose their efficacy.

Second, the selection of quick-acting pesticides such as dichlorvos, monocrotophos, methamidophos, fast-killing, fast killing, enemy killing and other pesticides in the pesticide belong to this type. This kind of pesticide has a strong contact or killing effect, and the mold killing effect is rapid, and the pest can be killed after being applied for 1-2 hours.

Third, the use of rain-tolerant pesticides such as fungicides Zhongjinggangmycin and Herbicide, Suikeling, etc. have good rain tolerance, after 1-2 hours or 4-5 hours, even if there is a shower Affect the efficacy.

4. Adding an adhesive to the liquid to add adhesion to the liquid to increase the adhesion of the pesticide to the surface of the crop and the pest. After the application, the medium and small rain are not easily washed away, thereby improving the control effect of the pesticide and preparing the pesticide. Liquid agent, 50-75 grams of drug solution per 50 kg of drug solution, such as washing powder, stir evenly and then apply.

V. Improve the application method If the systemic insecticide is selected, the fine soil will be mixed into the soil layer near the root of the crop before the pests occur, so that the plants can be absorbed, causing the pests to take poison and die. This method of applying root zone can avoid being washed by rain, especially suitable for use in the rainy season.

6. Selecting the time and applying the medicine According to the activity rules of the pests, the application time is selected. For example, for some pests that come out at night, such as rice leaf roller, choose to apply the medicine in the evening, so that the medicine is absorbed by the plant, let the pests come out for food within 2-3 hours, and then poison and die.

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