When spraying pesticides, it is a rainy weather. It is the most troublesome problem for farmers. So is there any pesticide with waterproof function? In fact, at present, there are not many pesticides with strong “waterproof” function, but the rainy weather can avoid the loss of efficacy caused by rain, by selecting systemic, quick-acting, rain-tolerant and microbial pesticides.

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, carbendazim, triadimefon, leaf cumin, triadimefon, thiophanate, omethoate, beta-cypermethrin and other bactericidal insecticides, 80% of the active ingredients are absorbed into the tissues by the crops 4 to 5 hours after application. Less loss of medicinal properties due to rain washing.

A quick-acting pesticide. Such as insecticides, dichlorvos, chlorpyrifos, monocrotophos, chlorpyrifos, enemy killing, chlorpyrifos, chlorpyrifos, anti-carbocarb, pyrethroids and other pesticides, with strong contact and toxicity The killing effect is as short as 1 to 2 hours after application, and the pest can be killed by 4 to 5 hours, which is less affected by the rainy season.

Washable pesticides. Among the fungicides, Jinggangmycin, Herbicide, Tricyclazole, and Scopolamine have good rain resistance. Even after showering for 1 to 5 hours, they will not be washed and affect the efficacy.

Microbial active pesticides. The commonly used microbial pesticides such as Jinggangmycin, Chunleimycin and Beauveria bassiana are more conducive to the germination and reproduction of sporophytes under high humidity conditions. The application of such pesticides in rainy days can fully exert their bactericidal and insecticidal effects.