What to Do About Herbicide Damage in Corn? Latest Solutions Explained

Corn is one of China's main food crops. During cultivation, weeds affect the growth and development of corn, so many farmers use herbicides, but improper use of herbicides can cause herbicide damage to corn and lead to reduced yields. So what should be done after corn suffers herbicide damage? Let's take a look together.

1. Soil treatment

For herbicide damage caused by using an excessive dose of herbicide, the damage can be alleviated by intertillage, continuous flooding of the field followed by drainage, and repeated rinsing. Combined with watering, a certain amount of lime powder can be applied to neutralize acidic herbicides. Residual chemicals should be washed out and drained promptly to reduce chemical residues in the soil, strengthen field management, and enhance the resistance of corn.

2. Strengthen field management

For fields where herbicide damage has occurred, field management should be strengthened. Combined with watering, increase the application of decomposed farmyard manure, urea, and other fertilizers to promote root development and regeneration, restore the physiological functions of corn, promote healthy crop growth, and reduce the harm of chemicals to crops. Strengthen intertillage and loosening of the soil to break up soil compaction, enhance soil permeability, raise soil temperature, promote the activity of beneficial microorganisms, accelerate the decomposition of nutrients, enhance root absorption capacity, promote plant growth and development, and reduce losses from herbicide damage. A 1%-2% urea solution or a 0.3% potassium dihydrogen phosphate solution can also be sprayed on the leaves.

3. Spray growth regulators

Plant growth regulators can have an excellent stimulating effect that reduces the growth and development of corn. Micronutrient fertilizers such as zinc, iron, and aluminum can promote crop growth and effectively reduce herbicide damage. Commonly used plant growth regulators include gibberellic acid, brassinolide, and sodium nitrophenolate. In addition, detoxifying agents can be used to reduce chemical toxicity. For example, using tea for seed dressing can protect corn from damage by herbicides such as acetochlor, butachlor, and metolachlor.

4. Replant or fill in with new seedlings

For fields with severe herbicide damage, in addition to identifying the cause of the damage, targeted remedial measures should also be taken technically. For severe damage that cannot be remedied, promptly replant or fill in with new seedlings to reduce losses.

The above introduces solutions for corn herbicide damage. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.