This year, the incidence of wheat scab in our province is more serious than normal. Through the field test before wheat harvest, the incidence of some resistant plants is also high.
Wheat scab is caused by a variety of Fusarium. Fusarium can be overwintered in diseased seeds and become the main source of infection in the coming year. Therefore, seed-borne bacteria is one of the main modes of transmission of the disease. In addition, late maturity, thick husk, and heavy-tolerant varieties have a serious incidence, and the amount of bacteria in the field is large.
How to reduce the impact of scab and make some suggestions for wheat planting management: 1. The agricultural departments at all levels attach great importance to it, strengthen propaganda and guidance, increase law enforcement inspection and testing, strengthen the processing of field inspection results in the early stage, and prevent the high incidence of diseases. Seeding seeds enter the seed market. 2. If you keep the seeds in light disease fields, you should take the methods of drying, wind selection, screening, etc., and fully select the seeds to retain healthy and full grains. 3. Taking seed coating measures to reduce the risk of seed infection is an important way to block the bacteria. Buy wheat seeds coated with a seed coating, from the species
Control the carrier seeds into the market. Or seeding with 17% gram·multi-ketone suspension seed coating agent, 15% more·fu·ketone suspension seed coating agent, or seed dressing with bactericide containing carbendazim, etc. The bacteria carried on the disease to reduce the symptoms of seedling caused by the seed bacteria. 4. Select resistant (resistant) disease varieties. Although no immune species have been found at present, there are some disease-resistant varieties with good agronomic traits, which can be selected according to actual conditions. 5. Strengthen field management, rational control of irrigation and drainage, and drainage of wetlands. After harvesting, deep ploughing and mites reduce the source of bacteria. It is recommended to apply compost with enzymes, using formula fertilization technology, rational fertilization, avoiding partial application of nitrogen fertilizer, and improving plant disease resistance. 6. Prevention is the main, prevention and treatment. Spraying 50% carbendazim WP 800 times solution or 60% carbendazim hydrochloride (anti-mildew) WP 1000 times solution, 50% thiophanate-methyl WP 1000 times, 50 More than 100% of the WP can be 800 to 1000 times liquid, etc., can be controlled once every 5 to 7 days. When spraying, focus on the wheat ears and spray evenly.
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