How to control wheat sheath blight

Sharp eyespot of wheat is a common disease in wheat growing area. It can damage wheat bud, stem and ear. It is harmful to wheat and can cause direct loss and affect yield. Next, we will talk about the occurrence, causes and symptoms of wheat sheath blight, and finally introduce specific prevention and control measures against the disease.

I. Symptoms of infection

At the initial stage of infection, it mainly damages leaf sheaths and stems, starts to occur in leaf sheaths very close to the ground, produces round or fusiform brown spots, expands continuously, and finally causes stem rot. Later will find leaf sheath all disease, the disease spots were moiré, humidity will grow yellow or white mold.

II. Causes

Mycelia and sclerotia overwinter in soil and diseased tissues, the disease will occur throughout the growth period, generally serious in warm and humid weather, spread rapidly, widespread, early spring disease is an important source of infection, must be controlled and eliminated to avoid excessive base number of bacteria, too fast reproduction. Rain, lack of light, serious disease season, sowing just so that growth jointing stage in summer disease heavy.

III. Prevention and control methods

1. seed selection

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

2. adaptive management

Sowing at the right time can reduce certain hazards. Sowing some time earlier can reduce the possibility of harm by missing the high temperature and rainy climate at jointing stage. Low early sowing temperature in the field can inhibit the propagation of the pathogen. Weeds must be removed in time to avoid forming a closed environment at the base of wheat after growth, increasing temperature and humidity, and aggravating diseases.

3. medicament

Before sowing, use B#powder or 33% vanillin (triadimefon + carbendazim) WP for seed dressing to disinfect seeds and avoid seed infection. 1kg seeds plus 1.5 kg seeds plus 1.5 mg gibberellin to remove the key points after spraying, if urgent planting can be used. At jointing stage, 10g of Jinggangmycin or 6- 9g of benzole·propiconazole are used to control diseases per mu. The wheat field is densely sprayed to the roots, which can increase the water consumption and allow the medicine to flow to the roots.

If you plant wheat field occurred such disease, you can combine the planting weather and disease occurrence conditions to refer to treatment, I hope there can be some help. More wheat-related content can continue to pay attention to updates and consult them by themselves.