How to prevent and control 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. Passion fruit cultivation is not as easy as imagined. For example, in autumn, passion fruit is very susceptible to yellow mosaic virus disease, causing losses to its quality and yield. So how to prevent and control passion fruit yellow mosaic virus disease in autumn?

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

In autumn, passion fruit very easily develops mottled yellowing of leaves, shrinking of growing points, no new buds, no new leaves, and curling, 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 setting is reduced, and it may even fail to bloom or bear fruit, with both yield and quality declining significantly.

How to prevent and control 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 leaves with a mixture of 600 times 0.5% fungal polysaccharide, 800 times 1.8% oligosaccharins? no, 1.8% xinjunan acetate, 1500 times 0.001% natural brassin, 0.1% zinc sulfate, and 1500 times 10% thiamethoxam for control, spraying on the leaves once every 7-10 days, for 2-3 consecutive sprays, evenly wetting all stems and leaves, until water droplets begin to drip down.

If rain occurs within four hours after spraying, it should be re-sprayed once, to improve the control effect. In this way, it can weaken the activity of the virus, inhibit the reproduction of the virus, and kill the virus and the pests that transmit the virus (the virus of passion fruit yellow mosaic virus disease is transmitted by pests such as aphids, whiteflies, and thrips), so that the diseased plants can resume normal growth and the virus can be prevented from spreading and harming other healthy plants. It can also enhance the plants' antiviral ability and reduce the incidence of the disease.