How to Deal with White Mold on Oyster Mushrooms? A Detailed Guide to Prevention and Control

Oyster mushrooms often show vigorous mycelial growth (white and dense) during cultivation, making it difficult for fruiting bodies to form, with few or no mushrooms emerging, a phenomenon growers often call "white mold." When this happens, the following methods can be used:

Adjust the temperature. For high-temperature oyster mushroom varieties, keep the daytime temperature at around 25°C; for low-temperature varieties, keep the daytime temperature at around 10°C. Within the suitable temperature range, increase the day-night temperature difference as much as possible to stimulate mycelial growth.

Control humidity. Keep relative humidity at 85%-95%. When humidity is low, fruiting bodies develop slowly; when humidity is high, fruiting bodies are prone to rotting and discoloration.

Increase ventilation. Under oxygen-deficient conditions, oyster mushrooms are unlikely to fruit, or are prone to producing deformed mushrooms, so ventilation should be increased, but do not blow air directly onto the mushroom bodies.

Mechanical compression. Evenly scatter about 100 dry soil particles with a diameter of 1.5 cm per sq m onto the mycelium to suppress mycelial growth and promote the formation of fruiting bodies.