Treatment of banana yellow leaf disease: banana yellow leaf disease spreads, what is the cause of banana yellow leaf

Yellow leaf disease is a kind of banana blight that banana farmers fear most. once banana yellow leaf disease occurs, it often takes up to 15 years to be fallow to resolve it. So how does banana yellow leaf disease spread? what is the cause of banana yellow leaf disease?

Banana yellow leaf disease, or Panama disease, caused by Fusarium infection, is a soil-borne disease; after the pathogen invades the banana from the root, it spreads to the tuber through the vascular bundle tissue, and the vascular bundle tissue of the infected site is obviously browned. there are many phenomena, such as longitudinal crack at the base of pseudostem, tuber rot and so on. The symptom of the leaf is that the leaf margin of the old leaf is yellowed first, and the leaf yellowing tends to develop to the upper new leaf, and in severe cases, the banana plant will wither or collapse rapidly. The pathogen of yellow leaf disease can spread through Rain Water, irrigation water flow and soil movement, resulting in a large number of banana plants in the whole orchard.

Once banana plants are infected by pathogens, banana farmers will face the loss of harvest and failure, even if banana plants can survive and heading. Therefore, the area of banana orchards in Gaoping area has greatly decreased in recent years, even in Qishan area, which is the main producing area of high-quality bananas in Taiwan. as far as you can see, there are abandoned gardens full of yellow leaves everywhere, and the planting area is in a straight decline, and the banana collection yard is cut and cut year by year because of insufficient supply. This shows the seriousness of the impact of yellow leaf disease on Taiwan's banana industry.

Soil is a very complex organism, and there is an ecological balance among soil microorganisms. crops take root in the soil and are naturally affected by soil microorganisms. it can induce the balanced coexistence of beneficial microorganisms of different ethnic groups to inhibit the imbalance of soil pathogens. Bananas can grow as long as the soil conditions are right.