Causes and Prevention of Wall-Hugging Mushrooms in Edible Fungi

Wall-hugging mushrooms grow between the bottle wall (growing bag) and the substrate. They are generally small and have no commercial value, but during their growth they absorb large amounts of nutrients and water, causing the fruiting bodies on the surface of the growing bag to grow abnormally or slowly; in severe cases, no fruiting body primordia form on the surface of the growing bag. The main causes of wall-hugging mushrooms are: the growing bag is filled too loosely or unevenly, leaving gaps between the growing bag (bottle) and the substrate; the substrate has a low water content, the fungus log shrinks, and gaps form between the growing bag (bottle) and the substrate; during handling or bag-filling, carelessness may cause the growing bag to tear, and all these situations easily lead to wall-hugging mushrooms.

Preventive measures: first, ensure the quality of bag-filling, work carefully, and prevent puncturing the substrate bag. If the substrate has insufficient water content and the substrate separates from the bag wall, irrigation can be used to make the substrate absorb water and expand, reversing the separation between the substrate and the bag wall.