PRODUCTION TECHNIQUE OF OYSTER MUSHROOM ON COMPOSTED SAWDUST BASED SUBSTRATES

Abstract

The experiment was carried out in the laboratory of the Mushroom Development Institute, Savar, Dhaka from July 2019 to December 2019 to determine the effect of the sawdust composting period on the yield and yield attributes of different oyster mushroom varieties. The experiment was laid out in Completely Randomized Design (CRD) with three replications. There were two factors in this experiment. Factor A: Variety, V 1 (Pleurotus djamor), V 2 (Pleurotus ostreatus PO10) and V 3 (Pleurotus florida) and Factor B: Days of composted sawdust, T 0 (5 days), T 2 (10 days), T 3 (15 days), T 4 (20 days), T 5 (25 days) and T 6 (30 days). In the study, the highest number of the fruiting body (13.97), number of the effective fruiting body (11.43) and the highest biological yield (50.12 g) was found in V 2 whereas, the lowest number of total fruiting body (4.36), effective fruiting body (2.54) and biological yield (11.43) was observed in V 3 . Results revealed that the maximum yield (55.00 g), the highest number of fruiting bodies (11.57) and effective fruiting body (9.21) were observed in T 3. The combined effect of different mushroom varieties and composted period of sawdust showed a notable variation in biological yield. The maximum yield (56.50 g) was produced by V 2 T 3 and the minimum yield (38.13g) was produced by V 3 T 2 . The highest biological efficiency was obtained in V 2 T 3 which was 32.28 % whereas, the lowest biological efficiency was obtained in V 3 T 2 sawdust which was 21.78%. This study suggests that Pleurotus ostreatus and 15 days composted sawdust showed the best performance among the planned treatments of the research in most of the cases.