How to prevent and treat passion fruit yellow mosaic virus disease in autumn?

The passion fruit industry is currently being vigorously developed in Guangxi, Fujian, Guangdong and other regions, and passion fruit has very good market prospects, but it is not all smooth sailing. Growing passion fruit is not as easy as imagined. For example, in autumn, passion fruit is very prone to yellow mosaic virus disease, causing losses to its quality and yield. So how do you prevent and treat yellow mosaic virus disease in passion fruit in autumn?

What are the symptoms of passion fruit yellow mosaic virus disease?

In autumn, passion fruit very easily develops mottled yellowing of the leaves, shrinkage of the growing points, no new buds, no new leaves, and curled, narrow, elongated and deformed leaves. That is passion fruit infected with yellow mosaic virus disease. After passion fruit is infected with yellow mosaic virus disease, the flower buds are deformed, fruit set is reduced, and it may even fail to bloom or bear fruit, with yield and quality both declining significantly.

How to prevent and treat it?

In autumn, pay attention to observing the passion fruit plants. When you find that the passion fruit plants have shrinking growing points, leaf chlorosis and yellowing, and new leaves that are curled, narrow, elongated and deformed, spray the foliage with a mixture of 600 times 0.5% fungal polysaccharide, 800 times 1.8% oligosaccharins and octylamine acetate, 1500 times 0.001% natural brassin, 0.1% zinc sulfate, and 1500 times 10% thiamethoxam for prevention and treatment. Spray the foliage once every 7-10 days, for 2-3 consecutive sprays, evenly wetting all stems and leaves, until water droplets begin to drip down.

If it rains within four hours after spraying, respray once to improve the control effect. In this way, you can weaken the activity of the virus, inhibit the reproduction of the virus, and kill the virus and the pests that spread the virus (the virus of passion fruit yellow mosaic virus disease is spread by pests such as aphids, whiteflies and thrips). This can help the diseased plants return to normal growth and prevent the virus from spreading and harming other healthy plants. It can also enhance the plants' antiviral ability and reduce the incidence of the disease.