Control Methods and Technical Key Points for Yellow Blotch Disease of Oyster Mushrooms

Control methods: [1]The mushroom house facilities must be thoroughly disinfected; removable support materials should be taken down, brushed or soaked in bleaching powder solution and then sun-dried, with bleaching powder used at 1:150 parts water; the floor and space should be sprayed with 1:50 Jinxing disinfectant solution.

[2]The compost and fermented material must be thoroughly processed, and the casing soil material should be fumigated with formaldehyde (for specific operation methods, see the control methods for mushroom Mycogone perniciosa written by our factory).

[3]Ventilation must be maintained inside the mushroom house, and the relative air humidity inside the mushroom house should be appropriately reduced so that the carbon dioxide concentration in the shed drops below 0.5%, and water use must be reasonable. After spraying water, the mushroom caps should be allowed to dry as quickly as possible. When the temperature rises, water can be sprayed on the walls inside the shed, ventilation should be increased, the temperature should be lowered, and the air in the mushroom house should be kept fresh.

[4]Once the disease occurs, immediately remove the diseased mushrooms, burn them in a centralized manner, stop watering, increase ventilation, and spray the bed surface with 1:600 bleaching powder or 100-200 ppm streptomycin or 5% lime water, which can achieve good control results.

Our experts, while investigating in mushroom-growing areas, found that some people used a mixture of 0.1% potassium permanganate plus 1% salt solution and sprayed it with very good results; interested mushroom farmers may give it a try, but be careful not to let water accumulate.