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Detailed Explanation of the Rapid Mycelium Colonization Method for Bag-Cultivated Oyster Mushrooms

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After inoculation, bag-cultivated oyster mushrooms generally need 25-30 days for the mycelium to fully colonize the bag. The longer the colonization period, the greater the chance of contamination by competing microorganisms, and the longer the production cycle. The following describes a simple, rapid colonization method that can significantly shorten the colonization time, reduce contamination by competing microorganisms, speed up fruiting, and shorten the production cycle. After the substrate (sterilized material) is bagged, inoculation is carried out at both ends. At each end of the substrate bag, a pointed stick (2-3 cm in diameter, about 30 cm long) is used to bore a hole from the center of the bag end, with a depth of more than half the bag, and then an appropriate amount of spawn is inserted into the stick hole

After inoculation, bag-cultivated oyster mushrooms generally need 25-30 days for the mycelium to fully colonize the bag. The longer the colonization period, the greater the chance of contamination by competing microorganisms, and the longer the production cycle. The following describes a simple, rapid colonization method that can significantly shorten the colonization time, reduce contamination by competing microorganisms, speed up fruiting, and shorten the production cycle.

After the substrate (sterilized material) is bagged, inoculation is carried out at both ends. At each end of the substrate bag, a pointed stick (2-3 cm in diameter, about 30 cm long) is used to bore a hole from the center of the bag end, with a depth of more than half the bag, and then an appropriate amount of spawn is inserted into the stick hole. A small amount of spawn is also placed on the substrate surface at the bag end, the neck ring is fitted and the bag opening is pulled tight, sealed with a layer of paper and a rubber band, and then the other end is inoculated in the same way, after which colonization can begin. Bags should be arranged according to temperature conditions. When the temperature is high, arrange the bags in a crisscross (well-shaped) pattern into stacks, with 4 bags per layer; when stacking a second layer, place them in the opposite direction, 5-6 layers per stack, leaving a certain gap between stacks to allow heat to dissipate. At moderate temperatures, arrange the bags in a crisscross pattern into stacks, 6-7 layers per stack, also leaving some gap between stacks. At low temperatures, arrange the substrate bags into stack walls about 10 layers high, also leaving gaps between the stack walls. The general principle is to keep the temperature during colonization at 25-30°C. If the substrate temperature is too low, colonization time will be prolonged; if the substrate temperature is too high, the mycelium will be damaged by heat. After inoculation, as the mycelium grows, the substrate bags themselves generate heat, so after about 1 week the stacks should be turned to check colonization progress and remove contaminated bags. With this inoculation method, the mycelium will fully colonize the bags in 10-15 days, cutting colonization time in half compared with traditional methods, and the technique is simple and easy to perform.

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