Wood Ear Fungus Disease Prevention and Control Methods, Common Disease Identification and Management Key Points

Disease prevention and control in wood ear fungus is an important part of cultivating edible fungi such as black wood ear (Auricularia heimuer) and hairy wood ear (Auricularia cornea). During the mycelium culture and fruiting stages, wood ear fungus is susceptible to infection by molds, bacteria, and other pathogens. Common problems include green mold contamination, Trichoderma infection, soft rot of the fruiting bodies, and bacterial rot of the fruiting bodies. Once these occur, they often spread quickly and directly affect yield and quality.

Prevention and control work should start at the source. The culture substrate should use fresh raw materials free of mold, and the steps of mixing, bagging, and sterilization must be thorough; inadequate sterilization is a common cause of contaminant microorganism infection. During inoculation, adhere to aseptic technique, and strictly disinfect the inoculation site, tools, and personnel to minimize opportunities for contamination.

Management during the fruiting stage is equally critical. The fruiting house or fruiting shed should maintain suitable temperature and humidity, strengthen ventilation and air exchange, and avoid prolonged overlap of high temperature and high humidity, because a stuffy, damp environment is most likely to trigger soft rot and fruiting body rot. Water should be applied from a clean water source, in small amounts and multiple times, to prevent standing water on the bed surface, and diseased fruiting bodies, rotten fruiting bodies, and old spent bags should be cleaned up promptly to cut off the routes of pathogen spread.

After disease occurs, isolate and handle it promptly, remove contaminated bags, and if necessary, use locally approved registered chemicals for targeted control, while paying attention to pesticide safety and stopping application before harvest. Overall, disease prevention and control in wood ear fungus should focus on prevention, combining environmental regulation, hygiene management, and standardized operations to effectively reduce the risk of disease and safeguard cultivation returns.