Managing casing soil moisture to preserve mushroom quality during the second flush

Mushroom quality often declines during the final two flushes because mushrooms mature rather than grow, with excessive drying of the casing soil identified as a key cause. Constant moisture is essential because the casing mycelium transports nutrients needed for later flushes. If the casing dries too much during the first flush, the mycelium becomes thin and cannot effectively restore nutrient flow, making full recovery difficult. Light, frequent sprinkling and gradual watering over two days may limit damage but cannot fully reverse it. Recommended measures include using coarser casing soil, increasing watering during preparation and the first flush, reducing cooling slightly, maintaining somewhat higher carbon dioxide levels, improving air circulation in cold, dry weather, and raising relative humidity by 1-2 percent.