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How to prevent rust-colored spots on mushroom caps
This is generally caused by failing to open doors and windows promptly for ventilation after watering, which makes the humidity in the mushroom house too high; water droplets then collect on the cap surface for a long time, producing rust-colored spots in localized areas. Rust-colored spots resemble bacterial spots, but they are limited to the surface. Preventive measures: open doors and windows for ventilation on schedule or when the weather is suitable, bring in fresh air, and evaporate the moisture on the surface of the mushrooms.
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What causes patchy bald spots (mycelial baldness) in oyster mushroom mycelium?
In the growing substrate, some areas grow mycelium while others do not, or the surface grows mycelium but the inside of the substrate does not; this is called "patchy baldness." The main causes are too much water when mixing the ingredients or uneven mixing, inadequate moisture adjustment, substrate blocks that are too large, too thick or too tightly packed, and poor ventilation or excessive temperature after spawning. Prevention and control methods: add water in the right amount, mix the ingredients evenly, do not make the blocks too large, too tight or too thick, and check the substrate temperature frequently to prevent the substrate from overheating through its own fermentation. If "patchy baldness" occurs due to overheating, respawn in time; if it is caused by moisture
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