How to treat the bacterial wilt in corn diseases?

Maize bacterial wilt, also known as maize stem rot or stem rot, is a worldwide maize disease, but it has occurred seriously in China in recent years. How to treat the corn disease caused by wilt? What are the symptoms?

First, how to treat the green blight of corn disease?

You can use 25% Ye Kuling plus 25% Ruidu mold powder 600 times liquid, or 58% Ruidu manganese zinc powder 600 times liquid trumpet spray; you can also use metalaxyl 400 times liquid or carbendazim 500 times solution to irrigate the root, 500 ml per plant. At the same time, the nutrition of the plant should be strengthened to improve the disease resistance of the plant. For example, applying 3000-4000 kg of high-quality farm manure, 13-15 kg of pure nitrogen, 8-10 kg of potassium sulfate per mu, and so on.

Second, what are the symptoms of corn bacterial wilt?

1. Corn bacterial wilt mainly occurs in the milky stage of corn. In the early stage of the disease, the leaves of the plant protruded and appeared bluish gray and dry, like frost damage.

two。 The root system and the base of the stem showed water-stained rot. The further development is that the leaves gradually turn yellow, the roots and stem bases gradually turn brown, the vascular bundles of the pith change color, and the stem base is hollow and softened, resulting in the lodging of the whole plant.

3. The mild disease also made the ear droop and the grain weight decreased. First of all, the root system disease, the local production of light brown watery spot, gradually spread to the whole root system, showing brown rot, and finally the root becomes hollow, the root hair is sparse, and the plant is easy to pull up.

4. The leaves of diseased plants showed water stains from top to bottom, which soon became bluish gray and withered, and then gradually yellowed; the ear was drooping, the stalk was flexible, and it was not easy to break off; the grain was withered, dull, and the 1000-grain weight decreased.

3. What are the other preventive measures for bacterial wilt?

1. Reduce the source of bacteria: the straw in the diseased field should not be crushed and returned to the field, but the diseased plant can be burned and the soil can be deeply turned over to reduce the amount of bacteria in the field.

two。 Reasonable close planting: please sow seeds according to the recommended density of product bags.

3. Strengthen field management: combine soil deep pine and wide and narrow row sowing techniques to enhance root activity and field ventilation and light permeability; pay attention to balanced fertilization, avoid partial application of nitrogen fertilizer, appropriate application of potassium fertilizer and zinc fertilizer can enhance maize disease resistance; drainage should be done in time after rain.

4. Pest control and disease prevention: timely control of underground pests such as armyworm and corn borer can cause wound pests and reduce the chance of pathogens infecting corn.

The degree of corn bacterial wilt is different, the treatment measures taken are also different, we should take corresponding measures according to the actual situation.