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Banana Bunchy Top Disease


Correct understanding of banana bundle top disease

Banana bunchy top disease, also known as banana banana disease, bush top disease, scallion banana or shrimp banana, mainly damages bananas and sometimes plantains. It occurs in Guangxi, Guangdong, Hainan, Fujian and Yunnan. The incidence of banana gardens with severe incidence can reach 10% -30%, or even 50% -80%, but most banana gardens occur sporadically. Plants that are susceptible to disease early are dwarfed and do not bud. Plants that are susceptible only at the current bud stage have fewer fruits and no commercial value.

The most prominent symptom of banana bunchy top disease is that the newly grown leaves are shorter and narrower than one, so that the diseased plant is short, the leaves are hard and straight, and they grow together in bundles.

The veins, petioles and false stems of the diseased leaves showed thick green streaks of intermittent and varying lengths.

Banana farmers call the thick green stripes on the petioles and fake stems "green bars". These dark green stripes are a reliable feature to diagnose early diseased plants.

Bundle top disease is a viral disease that mainly spreads among aphid strains in banana gardens, while the long-range spread mainly depends on diseased seedlings. The host range of the virus is limited to sweet bananas and abaca. Therefore, the disease is mainly prevention, and specific prevention methods are:
banana bundle top disease. Bunchy

1. Strictly choose disease-free banana seedlings 

New planting banana gardens must strictly choose reliable and disease-free seedlings. It is best to choose healthy and disease-free test tube seedlings. As planting materials, bud-buying seedlings often cannot guarantee their quality, and the incidence rate after planting is often higher than test tube seedlings.

2. Kill aphids regularly

After planting, it should be sprayed regularly with 40% oxymetholone 800-1000 times, 50% aphid mist 1500-2000 times, or other insecticides to control aphids to cut off the transmission route. The seedlings are sprayed once every 10-15 days, and the adult plants are sprayed once a month.

3. Strengthen soil, fertilizer and water management

Improving the management conditions of soil, fertilizer and water in banana gardens to make banana plants grow vigorously and enhance disease resistance is an active measure to control the occurrence of this disease or reduce its incidence.

4. Dig out diseased plants

After planting, they must be inspected regularly, at least once a month. Once the diseased plant is found, it must be excavated. Before digging out diseased plants, spray insecticide to kill aphids, or kill the diseased plants with herbicide and then dig out. For example, Yunnan Academy of Agricultural Sciences used 105 glyphosate 10 ml to inject fake stems 10 cm above the ground, and basically rotted in 30 days. The excised diseased plants are burned down or buried in deep manure.

5. Replanting other crops

For hospitals with an incidence rate of 30% -50% or more, due to the high probability of infection, a large number of healthy plants will also become ill after the diseased plants are removed. In this case, other crops should be replanted, or rice, sugarcane, etc. should be rotated to reduce the source of this disease and the source of diseases and insects.

Author's Bio

Doctor Shawna Reason, Virologist
Dr. Shawna Reason
Name: Shawna Reason

Education: MBBS, MD

Occupation: Medical Doctor / Virologist 

Specialization: Medical Science, Micro Biology / Virology, Natural Treatment

Experience: 15 Years as a Medical Practitioner

About Me | Linkedin | Quora Profile | Medium Profile | Twitter

 

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