Prevention and treatment of passion fruit virus disease

Passion fruit virus disease is a common disease in the process of passion fruit planting, which often leads to a serious decline in the quality and yield of passion fruit, seriously affecting the yield and income of farmers. So how to prevent and cure passion fruit virus disease? Let's get to know it.

1. Symptoms

There are several symptoms of virus disease, one is Lignification virus, which will lead to lighter leaves, mosaic symptoms, slight shrinkage, small and continuous fruit, hardened and thick pericarp, reduced fruit cavity, sterile floral organs, dwarfing diseased plants and poor growth and development. The second is mosaic virus, the disease is that the leaves are mottled with light yellow, the diseased leaves are wrinkled, the leaves will roll back seriously, some fruits are malformed and hardened, little or no pulp, poor plant growth, low yield and poor quality. The third is speckle virus, which is characterized by the appearance of flower spots in the fruit, which seriously affects the quality of the fruit and reduces the commodity value.

2. The regularity of the disease

The pathogen is cross-infected on Solanaceae, tobacco, potato and other crops, overwintering on pathogens, and can also be transmitted by pests and diseased seedlings over a long distance, which mainly depends on aphids. The occurrence is more serious in orchards with extensive management and more pests. The disease must spread, will spread at a very rapid rate, and spread throughout the garden in a short period of time.

3. Prevention and control methods

Disease-free seedlings should be selected when selecting seedlings, and soil disinfection should be carried out before planting. In areas where viruses are prone to occur, it is recommended to avoid intercropping as far as possible, especially not intercropping with eggplant and melon crops, which is very easy to induce virus diseases. Seedlings in the occurrence of virus disease or suspected virus disease, should be decisively removed, so as not to cause greater losses. Through rational fertilization and root maintenance, sea elves biological stimulants can be applied during the growing period to improve their disease resistance and stress resistance. To strengthen the prevention and control of aphids, whiteflies and mites, aphids can be controlled by imidacloprid, and mites can be controlled by spiromether, ethacarazole, tetramirazine, ethazol and so on. In pruning branches, attention should be paid to scissors disinfection to reduce mutual transmission between plants, and the disease occurred in the middle and late stages of the result. the disease was temporarily alleviated by spraying sea elf biological stimulant foliar type, and then destroyed after harvest.

The above is the introduction of passion fruit virus disease prevention and treatment methods, hope to help you, want to know more related knowledge, please follow us.