What should you do if your passion fruit gets a viral disease? The latest control methods are here
Passion fruit viral disease is a common disease during the cultivation of passion fruit. It often causes a serious decline in the quality and yield of passion fruit, severely affecting growers' yields and income. So how should passion fruit viral disease be controlled? Let's find out together.
1. Disease symptoms
There are several types of symptoms when viral disease strikes. One is the woodiness virus, which causes the leaf color to become lighter, showing mosaic symptoms, with slight wrinkling. The fruit is small and misshapen, the rind hardens and is relatively thick, the fruit cavity shrinks, the floral organs are sterile, and the diseased plant is dwarfed with poor growth and development. The second is mosaic virus. When it strikes, the leaves bear pale yellow mottling, the diseased leaves wrinkle, and in severe cases the leaves curl backward. Some fruits become deformed and hardened, with little or no flesh, and the plant grows poorly, with low yield and poor quality. The third is the mottle virus, which shows as mottling on the fruit, severely affecting fruit quality and reducing its commercial value.
2. Disease patterns
The pathogen cross-infects crops such as solanaceous plants, tobacco and potatoes, overwinters on the pathogen, and can also be spread over long distances by insect pests and diseased seedlings. It is mainly spread by aphids, and occurs more severely in orchards with extensive management and more insect pests. Once this disease spreads and expands, it will spread at an extremely fast rate, covering the whole orchard in a short time.
3. Control methods
When selecting seedlings, choose disease-free seedlings, and disinfect the soil before planting. In areas where the virus occurs easily, it is recommended to plant once a year, and try to avoid intercropping, especially not with solanaceous and cucurbit crops, as this very easily induces viral disease. When seedlings develop viral disease or are suspected of developing it, they must be decisively pulled out to avoid greater losses. Through rational fertilization and root care, you can drench with Haijingling biological stimulant during the growing period to enhance their disease resistance and stress resistance. Strengthen the control of virus-transmitting vectors such as aphids, whiteflies and mite pests. Aphids can be controlled with imidacloprid, and mite pests can be controlled with spirodiclofen, etoxazole, clofentezine, cyenopyrafen and others. When pruning branches, pay attention to disinfecting the scissors to reduce mutual infection between plants. If the disease occurs in the middle and late fruiting stages, spray the foliar type of Haijingling biological stimulant to temporarily alleviate the condition, and destroy the plants after harvest.
The above is an introduction to the control methods for passion fruit viral disease. We hope it can help you. To learn more related knowledge, please stay tuned to us.