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close this bookMushroom Cultivation in Thailand (Peace Corps, 1987, 85 p.)
close this folder5. Angel, oyster and abalone mushroom cultivation in plastic bags
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Harvesting

It will be possible to observe mushrooms growing within 3-4 days after removing the cotton plug from the bags of spawn. The first harvest should begin approximately seven days after the plug is removed, when the mushrooms are approximately 8-13 cm in diameter. To harvest, tear the mushroom away from the growing substrate at its base inside the plastic bag. After harvest, use a spoon handle or knife to scratch away 0.5-1.0 cm of substrate from the opening of the bag in order to expose fresh spawn to the humid conditions within the house and stimulate new mushroom growth. Another harvest will be possible in 8-14 days, at which time it will be necessary to scratch away more substrate. After 3-4 harvests, it may be desirable to cut an "X" in the back end of the bag in order to allow trapped spawn to develop into mushrooms. One bag of mushroom spawn will produce 200-500 grams of consumable mushrooms.

Like all mushrooms cultivated in Thailand, angel, oyster and abalone mushrooms grow best during the rainy season. As a result, supply is highest and prices (and profits) are lowest for these varieties during the rainy months. However, a farmer with a good mushroom house (i.e., one in which it is possible to maintain high relative humidity at all times) will be able to produce mushrooms with little difficulty during the dry season, and thus be able to capitalize on the high prices brought about by dwindling mushroom supplies, and realize a greater profit from his efforts.


Figure 31: Growth Progression


Harvesting