Hello sir,
for mushroom cultivation you need poly bag, paddy straw, and spown (mushroom seeds) inputs and infrastructure like racks, sprayer for irrigation and labour.
paddy straw is boiled in water at 100 0C for half hour to one hour, shed dry till you can handle and fill in poly bags 1feetX1.5 feet till quarter portion of bag and spawns are spread over then again fill the paddy straw to half of the bag and spread spawn till the bag fills. tie the bag with thread before filling you have to make holes on polybag for aeration purpose place these filled bags in wooden/iron racks for 20 days after 20 days cut open the bag and start spraying water 7-15 days every three days you can harvest mushroom (oyster) till 15 days. maintain hygiene condition in room where these bags are kept.