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First, the quality of land preparation. The quality of the land preparation is directly related to the efficacy of acetochlor. The quality of the soil preparation is not good, and the old grass is not cleaned up, which directly affects the weeding effect. Because acetochlor can only be absorbed by weed shoots and young roots, it has no control effect on the formed weeds. The quality of the soil preparation is not good, the soil is uneven, and the liquid can not be sprayed evenly, which affects the herbicidal effect.
Second, medication time. Acetochlor is a selective pre-emergence herbicide. Only when the weeds are used before the crops are planted, can the effects be achieved, and the earlier the better, the better the weeds are. .
Third, soil moisture. The effect of acetochlor on weeds is mainly through the absorption of weed buds and radicles, inhibiting the growth of young shoots and radicles, stimulating roots to produce tumor-like deformities, resulting in weed death. Certain soil moisture is conducive to improving the herbicidal effect. If there is continuous dry weather during the medication phase, the herbicidal effect will be greatly reduced. Therefore, first watering to increase soil moisture and then use it is one of the key measures to improve the efficacy of acetochlor.
Fourth, the problem of phytotoxicity. Acetochlor herbicide is prohibited for use on sensitive crops such as cucumber, rice, spinach, wheat, leeks, and sorghum. The use of acetochlor herbicide on tomatoes, corn, soybeans, vegetables, rapeseed and other crops should be limited to 50-75 ml per mu, otherwise it will easily cause phytotoxicity.
Author: Chao Hao Source: Daily farmer
Efficient use of the summer herbicide acetochlor
In recent years, due to changes in planting structure, the dryland crops in China have expanded rapidly, and the use of dryland herbicide acetochlor in corn, peanuts, tomatoes, green beans and other crops has also increased rapidly. Some farmers have caused poor herbicidal effects due to improper use during use, and even caused phytotoxicity. To this end, the following four points should be noted when using acetochlor herbicides in drylands:
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