Acetochlor is one of the most used herbicides in the world today. In recent years, due to changes in planting structure, the dryland crops in our city have rapidly expanded, and the use of herbicides such as acetochlor in corn, peanuts, and other nutritious beans has also rapidly increased. Some farmers in the course of their use have caused poor weed control due to improper use methods, and even caused continuous harm. For this reason, when using this herbicide to weed, the following points should be noted:
1? Soil moisture
The effect of acetochlor on weeds is mainly through the absorption of young shoots and young roots of weeds, inhibiting the growth of young shoots and young roots, stimulating the roots to produce a necrotic deformity, and leading to the death of weeds. A certain amount of soil moisture will help improve the grass-killing effect. If persistent dry weather is encountered during the medication phase, weeding effects will be greatly reduced. Therefore, watering the soil to increase soil moisture and then using drugs is one of the key measures to improve the efficacy of acetochlor.
2? medication time
Acetochlor is a selective pre-emergence herbicide. It can only be used before the weeds are unearthed after the crop is sown to produce its medicinal effect, and the earlier it is used, the better, and basically no effect on the unearthed weeds. .
3? Site preparation quality
The quality of soil preparation is directly related to the efficacy of acetochlor. The quality of site preparation is not good, and the old grass is not eradicated, which will directly affect the weeding effect, because acetochlor can only be absorbed by young shoots and young roots of weeds, and there is no control effect on already-formed weeds. On the other hand, the quality of land preparation is not good, the soil is uneven, and it is impossible to spray the liquid evenly, which will affect the weeding effect.
4? phytotoxicity problems
Acetochlor herbicides are not allowed to be used on cucumber, rice, spinach, wheat, leek, millet, sorghum, and other sensitive crops. Use of 50-75 milliliters per acre is achievable in crops such as Fanru, corn, soybean, vegetable, and rapeseed. Otherwise it is easy to harm.
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