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Pleurotus ostreatus surface scraping bacteria can increase production
After harvesting two crops of *Pleurotus ostreatus*, the substrate surface often becomes severely dry, compacted, and poorly aerated. This leads to mycelial aging, which can delay mushroom formation, reduce yield, and in some cases prevent mushrooms from growing at all. To address this issue, scraping the surface of the substrate is an effective method that significantly improves production outcomes.
The technique involves carefully removing a thin layer of aged mycelium from the surface. When the material is thick or the bacterial layer is too dense, gently scrape off a thin, senescent layer to expose the healthy mycelium underneath. For slightly hardened surfaces, use vertical and horizontal scraping to create small grooves, helping to expose the mycelium more effectively. In bed cultivation, you can use a bamboo broom to sweep back and forth across the surface until the old mycelium is removed and fresh mycelium is revealed. For bag cultivation, scrape the old mycelium from both ends of the bag to promote new growth.
Scraping the surface has a clear stimulatory effect on the formation of primordia, encouraging faster and healthier mycelial growth. Typically, within 7 to 10 days after scraping, new mushroom buds will begin to appear.
It’s important to remove the scraped old mycelium after the process to avoid contamination and the risk of harmful bacteria development. Additionally, ensure that the newly exposed surface is leveled for a neat and uniform mushroom growth. Avoid spraying water until the mycelium has fully recovered and started to grow again. This careful approach helps maintain optimal conditions for the next flush of mushrooms.