How to prevent and treat the death of oyster mushroom mycelium during the growth period?

Vigorous oyster mushroom mycelium is white like cotton fluff, thick and dense, advancing forward in a fan shape. In some cases, about 10 days after inoculation, the mycelium is suddenly found to turn yellow and gradually die off and disappear. Regarding this phenomenon, some mushroom growers believe that the higher the water content in the compost, the higher the yield, so they increase the water content when mixing the substrate. Some growers also do not understand the meaning of water content, mistakenly taking a compost water content of 65% to mean adding 148 kg of water per 100 kg of substrate. The correct method for calculating water content should also include the water contained in the compost itself; generally, the compost itself has a water content of more than 10%. If the compost is too wet and exceeds the limit for mycelial growth, it will lead to poor aeration and oxygen deficiency within the compost, and moisture-loving anaerobic contaminant microorganisms will multiply in large numbers, causing the death of oyster mushroom mycelium. In addition, excessively high temperature and inadequate sterilization can also lead to bacterial contamination. Oyster mushrooms tolerate low temperatures but not high temperatures; above 28°C, mycelial growth becomes slow, while bacteria multiply in large numbers at high temperatures and can secrete toxins during growth (a pungent odor can be smelled), which inhibit and kill oyster mushroom mycelium.