What are the common corn diseases? How to remedy the drug damage?

Corn is an excellent food crop for arid and barren areas, but in the process of planting, the occurrence of diseases affects the yield. What are the common corn diseases? How to remedy after the occurrence of drug damage? Let's learn about it together.

What are the common corn diseases?

The diseases suffered by different seasons, regions and varieties may be different, so here are a few common ones.

1. Spring corn

The main types of early-maturing spring corn in Northeast China are head smut, large spot, gray spot, stem rot, Curvularia leaf spot, Curvularia leaf spot, sheath blight, sheath blight, gray spot, ear rot, big spot, head smut, common rust; head smut, big spot, small spot, small spot, dwarf mosaic and crazy top disease in Northwest China.

two。 Summer corn

The main hazards of summer corn are leaf spot, powdery mildew, southern rust, stem rot and brown spot.

Among them, the common and serious diseases are large spot, small spot, rust, sheath blight, Curvularia leaf spot, stem base rot, head smut and so on.

How to remedy after the occurrence of drug damage to corn?

The main remedial measures for the occurrence of drug damage in maize are to improve the crop root environment, promote crop growth and enhance its stress resistance. Tillage measures such as loosening soil, increasing soil temperature and soil ventilation can be taken to supplement some available nitrogen, phosphorus, potassium or other micro-fertilizers according to the growth of crops. Foliar fertilization takes effect quickly, and it is also the most effective remedy for drug damage to corn. Some plant growth regulators that promote and strengthen the plant can be sprayed, especially those that promote root growth, but must be hospitalized according to the needs of crops and should not be applied at will. In short, as long as the measures conducive to the growth and development of crops, are conducive to alleviate drug damage and reduce losses.

1. Neutralize

For the damage caused by excessive dosage of herbicides, middle ploughing and watering with a certain amount of lime powder can be used to neutralize acid herbicides, and at the same time strengthen field management and enhance corn resistance.

two。 Watering

Increase the application of urea and other quick-acting fertilizers to promote root development and regeneration; strengthen ploughing and loosening the soil, enhance the root system's ability to absorb nutrients and water, and promote plant growth and development as soon as possible, at the same time, 1%-2% urea or 0.3% potassium dihydrogen phosphate solution can also be sprayed on the leaf to reduce the loss caused by drug damage.

3. Spraying plant growth regulator

Plant growth regulators have a good stimulating effect on the growth and development of maize. At the same time, trace fertilizers such as zinc, iron, aluminum and foliar fertilizers can be used to promote crop growth and effectively reduce drug damage. The commonly used plant growth regulators are gibberellic acid, rhamnetin vinegar, compound nitrophenol sodium and so on.

The time when each disease occurs and the medicament that needs to be used may be different, and the use of the medicament also needs to be used according to the instructions. Growers should follow the instructions when doing disease prevention and medicament configuration. Never use it at will to avoid drug damage.