STUDY ON PREPARATION OF LOW COST SPAWN PACKETS FOR THE PRODUCTION OF OYSTER MUSHROOM (Pleurotus ostreatus) AND ITS PROXIMATE ANALYSIS

Abstract

The effect of various supplements at di fferent levels with sawdust showed significant effort on mycelial running rate and reduced the required days to complete mycelium running in the spawn packet. The supplementation of sawdust found to be significant in yield and yield contributing characters of oyster mushroom with some extent. The highest biological yield. economic yield, dry yield, biological efficiency (BE) and benefit cost ratio (BCR) of 270.5g, 266.5g, 26.34g, 93.29, 9.57%. respectively was observed in sawdust supplemented with NPK mixed fertilizer (N=O.6%, P=O.3%, K=O.3%). Sawdust supplemented with different levels has a profound effect on chemical composition of oyster mushroom. Sawdust supplemented at different substrate found to be significant with mineral content of the fruiting body. Considering all the parameters in five experiments, NPK mixed fertilizer (N=O.6%, P=O.3%. K=O.3%) supplemented with sawdust is found promising for lowering the cost of production as well as increasing the yield and quality of fruiting body. Cow dung (11.5%) and starch (5.5%) as supplement with substrate may be the fair choice.