Prevention and Control of Pleurotus Virus Disease

Pleurotus ostreatus virus disease is an important disease of Pleurotus ostreatus, which occurs widely throughout the country and can cause significant reduction in production. It is a disease caused by viruses whose pathogens are spherical virus particles. Pleurotus ostreatus has no obvious symptoms after infection with the virus. Because the virus is parasitized in the cells, only the growth rate of the mycelium is slowed down, and the edges of the colonies are not always neat. By the time of the mushrooming period, after the infection of the virus, some fruit stalks of the fruit bodies are nearly spherical or flask-shaped and do not form bacteria. The cover may only have a small cap, or only keep the traces of the cap on the top surface of the near-spherical fruiting body, and later it will produce cracks, exposing white bacteria; some stipe flattened or curved, uneven surface Or with knob-like projections, the cap is deformed to a small degree, with deep nicks and wavy patterns; some of the caps and stipe on the stipe appear obvious water-stained stripes or streaks. Severely diseased fruit bodies cannot form spores. Some have been hindered by development, dwarfing mushrooms, thick cover, short shank or small cover.

Control methods: 1. Breeding disease-resistant, disease-resistant strains, breeding virus-free strains. 2. Strictly put the mother off. All growth abnormalities, especially the mother species with unclean mycelium, should be eliminated. The original species and growth species should be inspected regularly during the cultivation period. All mycelium nicks or plaques must be firmly eliminated. 3. Mushrooms, culture rooms, and inoculation tools should be strictly disinfected with medicines such as "house disinfection king" and "venus disinfectant". 4. Pleurotus ostreatus bags that have been found to be infected with virus diseases should be singled out and burned. After the end of production, the diseased mushroom house is strictly sterilized. The mushroom bed frame is disassembled and cleaned to prevent the spores and hyphae that carry virus particles from being lurking in the frame joints. 5. When the bacterial bag or fruit body symptoms of viral disease, with "strong virus clearing" 600 times spraying, spraying once every 4 days, the cure rate of 94%. 6. After the cultivation is completed, strict disinfection and fumigation treatment should be performed on the bed frame and mushroom house where virus disease occurs seriously to prevent sporulation and mycelia of the infected disease from long-term lurking.