Talking about the matters needing attention when using herbicides
①Prepare and use in strict accordance with the prescribed dosage, methods and procedures, do not increase or decrease the dosage at will, and spray evenly, without leakage or repeated application.
②The herbicide manufacturer tells you that according to the specific characteristics of herbicides, herbicides that must be used before seedling cannot be used after seedling, soil treatment agents cannot be used for stem and leaf treatment, and soil treatment agents should keep the soil moist after application. In order to facilitate the efficacy of the drug.
③ It should not be sprayed in high temperature, high humidity or windy weather. Generally, it should be sprayed in sunny, windless or breezy weather with a temperature of 20-30 °C. When spraying, the direction of the spray holes should be consistent with the wind direction, the direction should be perpendicular to the wind direction or the included angle should not be less than 45 degrees, and the spray should be sprayed downwind first and then upwind to prevent the liquid from drifting with the wind and damaging nearby sensitive crops.
④In principle, it should not be mixed with chemical fertilizers or other pesticides at will to prevent phytotoxicity. If it must be used in combination, it should be tested first and then applied. The sprayer for spraying herbicides must be thoroughly rinsed with clean water after use, otherwise it is easy to cause phytotoxicity.
⑤ Pay attention to avoid drug damage. To avoid crop sensitive period of drug use, when dealing with stems and leaves, it is better to spray at the 2-6 leaf stage of weeds.
⑥ The plots for soil treatment must be ploughed and leveled, and the spraying liquid should be uniform, otherwise the efficacy of the medicine will be reduced. The efficacy and phytotoxicity of herbicides produced by herbicide manufacturers decrease in the order of sandy soil, loamy soil, and heavy clay soil. Therefore, within the normal dosage range, the dosage of sandy soil can be less. The dosage of heavy soil can be larger.
