How herbicides do not affect post-crop crops

April 16, 2023

First, choose different herbicides based on soil characteristics, microbial species, climate, and irrigation conditions. For example, herbicides containing chlorsulfuron-methyl compounds are mainly decomposed by hydrolysis in the soil. When they encounter alkaline soil in the field, less rainfall in the year when the pesticide is used, soil drought, etc., their residual period in the soil tends to be prolonged. Vulnerable; the contrary, acidic soil, wet soil or irrigation farmland, the residual period is shortened, after the crop is relatively safe.
2. Before sowing in Daejeon, it should be understood whether the herbicides applied in the former crop have phytotoxicity to the crops in the rear crop. For example, if herbicides containing chlorsulfuron-methyl, metsulfuron-methyl, such as wheat straw, wheat straw, etc. are used before, then corn, soybeans, cotton and other crops cannot be cultivated.
Third, improve the application methods to reduce the amount of soil residues. First, the amount of drug to be accurate, spray should be uniform, do not leak spray, do not re-spray. The second is that the use period should be flexible. It can be applied before the crop is sown, before the seedlings, or after the seedlings. When applied after emergence, add adjuvants or synergists to increase efficacy and reduce dosage. The third is rational application of pesticides. The combination of chlorsulfuron and 2,4-D butyl ester can reduce the dosage of chlorsulfuron by 50%. Pussite soil treatment can be mixed with trifluralin, acetochlor, alachlor, saxin and others. Stripe spraying with Pusit and Guangmianling can reduce the dosage by more than 30%.

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