Prevention Methods for Contaminant Fungi in Edible Mushrooms and Notes on Water Supplementation

Select superior spawn: In production, choose spawn with high purity, appropriate spawn age, vigorous vitality, and no contamination by foreign fungi.

Prepare a suitable growing substrate: Since most edible mushrooms prefer a slightly acidic environment, appropriately lowering the pH of the substrate can inhibit the reproduction of contaminant fungi. In media containing starch and soluble sugars, such as wheat bran and rice bran, contaminant fungi survive very easily.

Improve the inoculation method: When cultivating edible mushrooms with raw substrate, increase the inoculation amount by 5%-10%, and inoculate 2/3 of the spawn onto the covering surface and around the sides, which helps the mycelium quickly colonize the surface layer of the medium and improves resistance to contaminant fungi.

Create suitable environmental conditions: During the cultivation of edible mushrooms, since most spawn types (except straw mushrooms) require relatively low temperatures, while most contaminant fungi prefer high temperatures, an appropriate cooling cultivation method can be adopted.