The latest ways to control wheat sheath blight

Wheat sheath blight is a common disease in wheat area, which can harm wheat malt, stem and ear, and can directly cause dead seedlings at seedling stage. It does serious harm to wheat, which can cause direct loss and affect the yield. Next, we will talk about the occurrence, causes and symptoms of wheat sheath blight, and finally introduce the specific prevention and control measures for the disease.

I. symptoms of infection

In the early stage of infection, the leaf sheath and stem were mainly damaged, and the disease began to occur in the leaf sheath very close to the ground, resulting in round or fusiform brown spots, which continued to expand, and finally caused stem rot. In the later stage, it will be found that all the leaf sheaths are sick, and the disease spots are moire-like, and yellow or white mildew will grow when the humidity is high.

Second, the cause of the disease

Overwintering with hyphae and sclerotia in soil and diseased tissue will occur throughout the growing period. generally, the disease is serious, spreads rapidly and spreads in a large area in warm and humid weather. The disease in early spring is an important source of infection, which must be controlled and eliminated to avoid too large the number of bacteria and propagate too fast. The disease is serious when it is overcast and rainy, lack of light, and sowing just makes the disease serious in the growth and jointing stage in summer.

III. Prevention and control methods

1. Selection of species

Select varieties with strong adaptability and resistance, such as Huamai 7, Emai 6, Afu, Ji 84-5418, Yumai 10, Yumai 13. These are excellent varieties cultivated in the main wheat area for many years, which are worth popularizing and planting, and have a certain degree of safety guarantee.

two。 Suitable broadcast management

Sowing at the right time can reduce certain harm, can sow some time early, let the jointing period miss the high temperature and rainy climate, can reduce the possibility of harm. The lower temperature of early sowing in the field can inhibit the reproduction of bacteria. Weeds must be pulled out in time to avoid forming a closed environment at the base of wheat after growing up, increasing temperature and humidity, and aggravating diseases.

3. Medicament

Before sowing, use B# power powder or 33% WP (triadimefon plus carbendazim) wettable powder to treat seeds, disinfect seeds and avoid seed disease. Use 1kg seeds plus 1.5kg seeds plus 1.5mg gibberellin to remove the key after spraying, and can be used if you are in a hurry to plant. At jointing stage, 10 grams of Jinggangmycin or 9 grams of benzopropiconazole were used per mu to control diseases. The dense wheat field can not reach the root, which can increase the water consumption and let the medicine flow to the root.

If such a disease occurs in the wheat field you plant, you can refer to the treatment combined with the weather and the condition of the planting place. I hope it can be of some help. More wheat-related content can continue to follow updates and check it out on your own.