What kind of medicine does passion fruit virus disease fight, and how many ways to prevent and cure passion fruit disease?

Viral disease is the second largest disease in the production process of passion fruit. Many viruses can harm passion fruit, causing mosaicization of leaves and fruits, and even plant death. There are many netizens who call to consult and cultivate to help the passion fruit. What kind of medicine can delay the disease? How many ways to prevent and cure the passion fruit disease? What kind of medicine can you prevent for passion fruit virus? The following cultivation and cultivation network will be briefly introduced for the reference of netizens. Symptoms of Passion Fruit Virus To date, 26 species of plant viruses that can harm passion fruit have been reported. Most of the diseases caused by the virus are only sporadic in a few countries. At present, the main viral diseases of Chinese passion fruit are cucumber mosaic virus (CMV), passionflower lignification virus (PWV) and passion fruit green spot virus. (PFGSV), the main symptoms are as follows: 1, cucumber mosaic virus disease:: leaves are typical mosaics. There are obvious yellow spots or yellow spots on the young leaves, and the young leaves are curled at the top; the old leaves have chlorotic and yellowing phenomenon; the diseased plants are dwarfed, the growth is poor, and the flowers and fruits are obviously reduced. After the yellow fruit passion fruit is infested, it is also a typical flower leaf. There are yellow spots on the old leaves, but the diseased plants have no obvious dwarf phenomenon. At the same time, the fruit has symptoms of stone fruit after infection. Under natural conditions, it is mainly transmitted through peach aphid and cotton buds. 2, Passiflora lignification virus disease: the performance of the leaves light color, showing mosaic symptoms, slightly shrinkage phenomenon. The fruit is small and deformed, hardened, the skin is thick, the fruit cavity is reduced, and the flower is sterile. The diseased plant is dwarfed and has poor growth and development. 3. Passionflower green spot virus disease: The disease is named after a green spot of 2 to 5 mm in mature fruit. After infestation, the old leaves appear green vein necrotic lesions along the veins. When the disease is serious, the lesions gradually cover and surround the branches, causing the plants to die and even destroy the garden; The main method of transmission of passion fruit virus disease: Lignification virus (PWV): The seedling itself is sick or transmitted by grafting, pruning, peach aphid and so on. Cucumber Mosaic Virus (CMV): The seedlings are originally diseased or transmitted by cuttings and diseased shoots and cotton aphid. Passionflower mottle virus (PaMV): spread with diseased seedlings, mechanical transmission, grafting and transmission of cotton aphid and spirea. It should be pointed out that the vector insects of viral diseases include beetles, mites, nematodes, whiteflies and the like in addition to aphids. For example, yellow mosaic virus (PaYMV) can be transmitted through the South American leaf beetle, and the ring spot virus (ToRSV) is mainly transmitted through the American sword nematode. The natural host of cucumber green mottle mosaic virus disease is mainly Cucurbitaceae, such as cucumber, watermelon, melon, gourd, loofah, fig, leaf melon, etc.; it can also infect ochre, white peony, mandala, tobacco, Butterfly grass, scorpion and other plants. Passion fruit virus control measures Viruses have absolute dependence on cells. The energy, substances, and places required for viral replication are completely provided by the host. Plant cells do not have a complete immune metabolism system like animal cells, thus providing research and development of highly selective chemical antibiotic agents, as well as plant virus diseases. The drug control has brought great difficulties, and there is no effective antiviral therapeutic agent. 1. Usually, when the virus disease is found in the seedling stage, only the whole seedling is directly destroyed. If it is in the middle and late stages of the result, it can only control the disease and destroy it after receiving the fruit. 2. When the passion fruit is infected with the virus, the leaf reaction is not as fast as it is. When the leaves react, it is already very serious. If it is a wooden virus, the impact on the quality of passion fruit is the biggest, and this must be resolutely eradicated. 3. Select non-toxic healthy seedlings, control from the source, disinfect the soil before planting, and choose the cultivated land near the orchard that has not been planted with pepper, tobacco, solanacea, melon and other crops as the passion fruit planting area. 4, strengthen cultivation management, scientific pruning, cut off sick branches and dense branches, adjust the ventilation and transparency in the garden, timely clean up and burn diseased diseased leaves, reduce the number of pests and diseases, pruning scissors is best to pruning each fruit At the end, a portable flamethrower is used for disinfection and another plant is trimmed. And timely remove the diseased plant with serious disease, and use the quicklime to disinfect and sterilize. The diseased land is 0.2 kg/m2 and the lime is evenly treated to cultivate the land, so that the residue such as stems and leaves can be quickly decomposed. 5, in the passion fruit seedling period 10 to 15 days spray to kill aphid and other drug-borne vectors, inhibit the occurrence of viruses, while paying attention to the prevention and control of underground pests. Conditionally, the agent is sprayed regularly from the seedling stage to continuously increase the ability of the passion fruit plant to inhibit the virus. 6. After eradicating the virus-infected plants, the virus will still form a protein shell in the host to sleep. The orchard that needs to be replanted must be re-planted after more than ten days of turfing and disinfecting the original planting hole. 7. After the occurrence of mosaic virus disease, the whole plant can be sprayed with 1000-1500 times of lobular yellow, or 1500-2000 times of virus spirit, or 2000-2500 times of bacterium. Or use the scorpion venom, ie, octylamine morpholinium to control. 8. Pay attention to the plants of Passion fruit during the cultivation of Passion fruit. It is found that the growth point of the passion fruit plant is atrophy, and the leaves are chlorotic and yellow. When the new leaves are curled and elongated, the leaves should be sprayed 600 times 0.5%. Proteoglycan, 800 times 1.8% octosamine acetate, 1500 times 0.001% natural brassin, 0.1% zinc sulfate, 1500 times 10% thiamethoxam mixture for prevention and treatment. Spray the leaf surface once every 7~10 days, spray it continuously for 2~3 times, spray all the stems and leaves evenly, and start to drop the drops of water. In case of rain water granules within 4 hours after spraying, it should be re-sprayed once to improve the control effect. In this way, it is possible to weaken the activity of the virus, inhibit the propagation of the virus, kill the virus and spread the virus (the virus of the passion fruit mosaic virus is transmitted by pests such as aphids, whitefly, thrips, etc.). It can restore the normal growth of diseased plants and prevent the spread of viruses to other healthy plants. It can also enhance the ability of plants to resist viruses and reduce the incidence.

Author: