Corn herbicides have been used for many years, but every year there is an unnecessary loss due to improper use of medicines. Understanding the weeds in the field, targeted use of drugs, and mastery of the amount of drugs and time and soil moisture, we can achieve the desired weeding effect.
Herbal medicine. The selection of herbicides should be based on the type of weeds and the time of use. For corn fields dominated by crabgrass, goosegrass, leprosy, lotus root, and alfalfa, 40% acetamidine water or 41% cebuturin 150- 200 milliliters, etc., used before seedlings after corn sowing, no later than the weeds 2 leaf stage; can also choose to use 60 ml of 4% fungol or 100-120 ml of 2.25% konshi, in weeds 3-5 Use at the leaf stage; For corn fields with large grass, corn should be sprayed with 20% paraquat or 41% Roundup 80-100 ml/mu immediately after sowing.
Strictly control the dosage. At present, there are many kinds of herbicides in corn fields. When using them, we must strictly control the amount of drugs used. We must not use too much or too little, and we must ensure the weed control effect, but can not affect the growth of corn and sorghum crops.
Increase the amount of liquid medicine. General requirements for the amount of liquid used per mu 30-40 kg, after spraying should ensure that the ground is moist.
Drought should be treated with water first. In dry years, it is necessary to control the spraying of water after spraying water first, and when the spray is applied, the ground should be wetted to facilitate the formation of a film on the ground.
Timely medication. Should be based on the use of herbicides used in appropriate period, a reasonable time to determine the use of drugs to prevent spraying too late and affect the efficacy.
Correct application. The herbicide should first be converted into a mother liquor. The suspension agent should be used after shaking well. The spraying should be carried out as spraying. The spraying time should be controlled before the morning of 9 am and after 5 pm in the windless weather. Avoid spraying before and after noon and windy weather and high temperatures. Spraying is done evenly, no heavy spray, no leaking spray, ensure spraying effect.
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