Evaluation of Substrate Combinations for Oyster and Milky Mushroom Production

摘要

The present investigation was carried out to find the effect of different substrates such as Paddy straw, Sugarcane trash and their combination on growth and yield of different mushroom species. Early bud initiation was found in the paddy straw amongall the mushroom species used. In milky mushroom (Calocybe indica) early bud initiation was observed in Paddy straw (31.50 days) alone as substrate, which is on par with the combination of paddy straw + sugarcane trash (32.66 days). The fruiting bodies of mushrooms grown on different substrates were harvested at each flush separately up to the third flush. The highest yield was observed in the first flush and it was decreased in the second and third flush on all the substrates. Among different substrateI used, paddy straw substrate was superior and recorded highest yield in all the oyster mushroom species used. InHypsizygus ulmarius the yield on paddy straw (524.33 g bag"') substrate was on par with the Paddy straw + Sugarcane combination (514.17 g bag"1). Biological efficiency was significantly varied and found to the highest in Paddy straw substrate in all the oyster mushroom species used. In milky mushroom (Calocybe indica) Paddy straw + Sugarcane trash combination recorded higher bio-efficiency of 111.63 per cent and found to be the best substrate for cultivation of milky mushroom. Spent mushroom substrate obtained after mushroom cultivation was analysed for N, P and K content and results showed increase in the N P K content and narrow down of C: N ratio of the spent mushroom substrate over the initial observations. This investigation showed sugarcane trash can be used in combination with the paddy straw for the cultivation of different species of mushroom species.