Cultivation Process Of Mushroom | Process Of Cultivation Of Mushroom | Steps Included In Mushroom Cultivation Cultivation Cultivation of mushroom incudes compost preparation, spawning, casing, harvesting:  1. Compost preparation:   The compost used for mushroom cultivation comprises of wheat/rice straw, poultry manure, horse manure, rice bran, gypsum etc.   The chopped wheat straw or rice bran is mixed with poultry manure or horse dung, sprinkle with water and piled in a heap for fermentation.  Frequent watering and turning is done at a specified interval to avoid drying of compost.   Gypsum is sometimes used to reduce greasiness of the compost.  15-20 days compost is most preferably used as bed.  It is then sprayed onto wooden tray and sowed with spawn.  2. Spawning:  Spawn is the mycelium which is carefully propagated and spawning is the process of mixing the spawn with the compost.   Then the mixture is covered with newspaper and watered sufficiently to maintain the moisture.   Thr