How to prevent and control green mold in edible mushrooms? A detailed introduction to practical methods

Green mold disease is a major enemy in edible mushroom cultivation. It is prone to occur in large amounts when raw materials are not fresh, raw material handling is improper, sterilization is incomplete, inoculation is not strict, and the spawning environment is not clean, especially combined with acidic, high-temperature, and high-humidity conditions. Its spores spread quickly through the air and reproduce rapidly. If prevention is inadequate or control is not timely, serious consequences will result.

1. Select fresh raw materials and auxiliary materials that have not been rained on and are not moldy. Raw material handling and fermentation sites must be clean and hygienic.

2. During cooked-material cultivation, sterilization standards must be met and sterilization must be thorough; during fermented cultivation, the fermentation temperature must be reached, and turning of the pile must be timely and even. Strictly select and use spawn, maintain strict control over the spawn, inoculation operations must be strict, and the spawning site must be disinfected regularly to ensure it is clean and sterile. Remove contaminated spawn bags promptly.

3. Take 9 parts lime powder, 1 part carbendazim, and an appropriate amount of water, mix evenly, then pour and brush it onto the moldy areas.

4. Use a 200-fold solution of Kemeiwang or similar to inject the mold inside the bags or pour and brush the green mold on the bed surface.

5. Use a 1:800 dilution of benomyl solution to spray the moldy areas on the material bags or material beds.

6. Brush 95% alcohol or kerosene onto the moldy areas, ignite and burn them, then dig them out and fill with new material.

7. First spray the moldy areas with a 3% Lysol solution to wet and disinfect them, preventing spore spread, then dig out the moldy parts (including the material 1 cm outside the colony). After digging out each spot, the tools must be washed, wiped, and disinfected. After digging out, the culture material and spawn can be refilled.

8. When using raw material or fermented material for cultivation, add 100 g of Kemeiwang mixing agent per 100 kg of dry material, which can effectively prevent or eradicate mold damage.

9. Spray the infected area with 2.5% lime-sulfur mixture to inhibit the germination of mold spores and the spread of mycelium.

10. Once green mold damage occurs on the mushroom bed, quickly ventilate, lower the temperature, and reduce humidity. The contaminated areas can be sprayed with 3%-5% carbolic acid solution, 2% formaldehyde solution, or 800-fold 50% carbendazim solution. For seriously contaminated mushroom beds and mushroom bags, the material should be dried in the hot sun as early as possible, re-prepared with 0.2% Kemeiwang mixing agent added, fermented, then sterilized, and subjected to cooked-material cultivation.

The above methods can all achieve good results in preventing or treating green mold, and can also be used to control other types of contaminant fungi.