What are the prevention and control technology of banana sheath rot?
Banana sheath rot. At the beginning of the onset, the banana leaf sheath appeared to a small yellow brown dot. After that, the lesions expanded and squeezed the diseased part. The lesions are gradually expanded up along the negative surface of the leaf sheath. In high temperature and high humidity environment, the degree of decay of the diseased spot is intensified, and it is dark brown water -shaped soft rot, which causes the banana leaf to be sagged before withering. In the later stage of the onset, the entire leaf sheath and fake stems became brown and decaying, announcing the thick odor, the banana leaves were yellow, withered and withered.
Banana sheath rot is mostly in high temperature and high humidity environments. At the temperature of 28-25 ° C, the disease is the fastest. The disease is also related to the acid and alkali of the soil. If the soil is too acidic, the nitrogen fertilizer is applied for a long time. Cooperative use, banana garden is simpler infection.
In this regard, the following preventive measures can be used.
1. Strengthen training management
Strengthen the management of banana fertilizer and water. Do not spread and immerse in winter and spring in winter and spring. Timely dredging the drainage ditch of the Banana Garden so that it can irrigate and discharge. The top fertilizer should be applied to the bottom fertilizer, mainly organic compound fertilizer. Followed by chemical fertilizers, nitrogen, phosphorus, and potassium with fertilizer fertilizers have a certain share, and nitrogen fertilizers cannot be applied.
And to make up for trace elements (calcium, sulfur, magnesium, etc.), balance nutrients, which is conducive to the growth of banana plants and enhance the ability of anti -disease. Together, the old leaves and dead leaves in the lower part of the banana plant are eliminated in time, and the outstanding field ventilation and light transmission is adhered to. Repair the remaining buds to ensure outstanding nutrient supply of plants.
2. Reasonable rotation
The severe fields of banana sheath rot can prevent or reduce the onset of the disease by changing other crops. Suitable crops include rice, corn, sugar cane, watermelon, etc.
3. Chemical prevention
Tests have proved that 42%of the wetonic powder of albumine uric acid is a better potential to press the decaying disease of banana leaf sheath. The diluted liquid of 336 times the diluted liquid is applied by 4 times, and the distance time of the medication is 10-15 days. Spray the banana fake stems and leaf sheaths, or rotate other bactericides. It can also be used: organic copper, Chunleneromycin, Jinggangicillin, agricultural splinycin, and azozole zinc.
