How to Force Oyster Mushrooms to Fruit? Key Cultivation Techniques Explained
Oyster mushrooms are not fruiting at all now. How do you force oyster mushrooms to fruit? I hope fellow growers can give some guidance. In oyster mushroom cultivation, some bags fail to fruit after the mycelium has fully colonized, or after the first flush is picked, the second-flush primordia are slow to appear. In both of these situations, as long as the bags have colonized normally and the strain's temperature type is suitable, the following methods can be used...
Oyster mushrooms are not fruiting at all now. How do you force oyster mushrooms to fruit? I hope fellow growers can give some guidance.In oyster mushroom cultivation, some bags fail to fruit after the mycelium has fully colonized, or after the first flush is picked, the second-flush primordia are slow to appear. In both of these situations, as long as the bags have colonized normally and the strain's temperature type is suitable, the following methods can be used to force fruiting (for reference).
Method 1. Temperature difference stimulation:Raise the temperature of the mushroom shed during the day and ventilate to lower the temperature at night. Artificially widening the temperature difference can stimulate fruiting.
Method 2. Light stimulation:
After the bags are fully colonized, roll up the straw curtains of the mushroom shed every day and let sunlight shine in for a period (do not expose to direct sunlight when the light is intense). In trenches or mushroom rooms where sunlight is inconvenient, electric light can be used.
Method 3. Scratch stimulation:
For cases where too much wheat bran, rice bran, urea or other high-nitrogen materials were added to the substrate, causing an imbalance of carbon and nitrogen, mycelium overgrowth, and formation of a mycelial skin that delays fruiting, or where the bag was opened too early and the surface of the bag is too dry to fruit, a small nail rake made of wire in the shape of a chicken claw can be used to gently scratch open the mycelial covering or mycelial skin. Combined with ventilation and spraying a 0.5% glucose solution, plus temperature difference and light stimulation, this can promote pinhead formation.
Method 4. Shock stimulation for primordia:Use a sterilized wooden board, tree branch or the palm of your hand to gently pat the surface of the mushroom bed or the mushroom bags, so that the mycelium receives vibration stimulation, promoting the formation of primordia.
Method 5. Air stimulation:Close doors and windows or cover with plastic film to increase the carbon dioxide concentration, then ventilate twice a day for half an hour each time.
Method 6. Casing soil and pressure stimulation:Place tiles, wooden boards or bricks on the mushroom bed or bags. For mushroom bed cultivation, covering with a 1-1.5 cm thick layer of soil particles both prevents contaminant fungi and gives a better moisture-retaining fruiting-forcing effect.
Method 7. Hormone and chemical stimulation:
Spray the surface of the bags or the mushroom bed with naphthalene acetic acid at a concentration of 5 parts per million to 10 parts per million, or triacontanol at 0.1 parts per million to 0.5 parts per million. This method not only advances fruiting but also increases yield.
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