Corn blast disease control

Corn blast disease control

The mycelia and attached conidia in the diseased leaf tissue in the field surface and in the corn stalks can be overwintering and become the initial infection source in the second year. During the growing season of corn, the wintering fungus produces spores that spread to the leaves of the corn with rain or airflow, and is suitable for germination and invasion under conditions of temperature and humidity. The bacteria spread rapidly after invading, and after about 14 days, it can cause local wilting and tissue necrosis, which leads to the formation of dead dead spots. In wet climate conditions, a large number of conidia can be produced on the lesions, and they can be transmitted with airflow for multiple times. Re-infection, causing disease epidemic. The field has seen lesions: in northern China, spring maize in early June and summer maize in mid-July.

Control methods

Should take the use of anti-resistant, disease-resistant varieties, strengthen the cultivation and management, focus on pesticide protection and other comprehensive prevention and control measures.

1. Use resistant (resistant) varieties and corn hybrids resistant to large and small spot diseases.

2. Implement a crop rotation system to avoid corn cropping, deep-falling soil in the autumn, deep-buried diseased plants, and sterilization sources; corn stalks used as fuel, which can be treated as soon as possible after the beginning of spring, and can also be used to treat corn borer; Full maturity, straw fertilizer is best not applied in corn.

3. Improve cultivation techniques and enhance corn disease resistance Early sowing of summer maize can significantly reduce the incidence of disease. Appropriate application of phosphate fertilizer, pay attention to the reasonable combination of nitrogen, phosphorus and potassium fertilizer, reapply horn flare fertilizer, implement corn and soybean intercropping, or with wheat and peanut Intercropping with sweet potatoes, etc., wide and narrow row planting; rational irrigation, low-lying attention to field drainage.

4. Spraying and spraying control Due to the limitation of objective conditions such as high planting density and planting of corn, it is possible to focus on the control of crops, intercropping fields and other high-yielding experimental fields. Generally before the disease spreads, it can be controlled before and after corn tasseling. When the disease rate in the field reaches more than 70%, and the diseased leaf rate is about 20%, spraying is started. The types of agents with better control effects are: 50% carbendazim WP, 50% amifenoxone WP or 90% MXC, all added 500 times of water, or 40% of GFMS 800 times. The use of liquid medicine per mu 50 kg to 75 kg, sprayed every 7 days to 10 days, a total of 2 times to 3 times.

Transmission Hardware Fitting

Socket Eyes are used for connecting conductor clamping devices to ball and socket type insulators. Made by malleable iron, hot dip galvanized to meet ASTM A153 specification.

Ball Eyes are used to attach ball and socket insulators to other associated hardware. Hot dip galvanized to meet ASTM A153 specification.

Thimble Cleivs are used for attaching guy to pole eye plate. Hot dip galvanized to meet ASTM A153 specification.

Turnbuckles are used as adjustable extension links to maintain proper tower clearance on assemblies at tower end.

Strain Clamp used for distribution and transmission line construction with all aluminum ACSR, or aluminum alloy conductor.


Transmission Hardware Fitting,Power Line Fitting,Wire Rope Thimble Clevis,Hot Line Socket Clevises

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