What is the harm of banana Fusarium wilt? How to prevent and cure it?

What is the harm of banana Fusarium wilt? How to prevent and cure it? Please introduce the method of banana Fusarium wilt, which is called banana Panama disease and banana Fusarium wilt. It has long occurred in many countries in Latin America, and it has also been discovered in Taiwan Province of China. This disease is listed as the quarantine object of our country both externally and internally. From 1985 to 1988, Longya bananas (Guoshanxiang) and powdered bananas in the suburbs of Zhongshan, Panyu and Huadu in Guangdong Province suffered from the disease in a large area, with an incidence of 3.7%-26% and serious up to 60%, resulting in devastating losses. The disease was first seen in the yellowing of the leaf margin, and the diseased leaves withered and drooped rapidly, turning brown to dry from yellow to brown. Vascular bundle necrosis, yellowish brown or purplish red could be seen in the corms and roots of the diseased plants. The disease is a vascular bundle disease caused by Fusarium oxysporum. The pathogen is Fusarium oxysporum. Four physiological races have been found, of which race 4 has been found in Taiwan Province, which can infect all banana and plantain varieties with the greatest risk. The initial infection source of the disease comes from the diseased plant and bacteria-carrying soil. The thick spores of the pathogen can survive in the soil for several years to more than ten years, but the survival time is greatly shortened in the case of stagnant water and hypoxia. The disease spreads over a long distance mainly through seedlings, infected soil and running water, and it is easy to occur in low-lying banana plantations. Prevention and cure method: ⑴ strengthens quarantine. Strictly prevent the entry of diseased seedlings from abroad or Taiwan Province, and banana seedlings from endemic areas should also be strictly prohibited from being transferred to other places. ⑵ popularized the planting of disease-free tissue culture seedlings. ⑶ regularly inspects the banana garden and finds that sporadic diseased plants should be removed and destroyed in time, and the soil should be treated with lime or urea. Seriously ill areas may consider destroying the whole garden and planting other cash crops such as rice, peanuts and sugarcane. Click to get more banana planting techniques click to get more fruit planting techniques