EFFECT OF DIFFERENT SUBSTRATES AND MOTHER CULTURES ON YIELD AND YIELD PARAMETERS OF OYSTER MUSHROOM (PLEUROTUS OSTREATUS)

Abstract

This study was conducted to determine the effects of different substrates and mother culture materials on yield and yield parameters of oyster mushroom (Pleurotus ostreatus) in the Laboratory, Department of Plant Pathology, Sher-e-Bangla Agricultural University and Mushroom Research Institute, Savar, Dhaka. Three substrates namely sawdust, rice straw and sawdust + rice straw (1:1) and three mother cultures namely rice, maize and sawdust were tested for their efficacy in oyster mushroom production. Among the substrates the highest length of the stipe, thickness of pileus and biological yield were found in rice straw (23.27 mm, 5.60 mm and 44.40 g/packet, respectively). The highest diameter of stipe and diameter of pileus were measured in sawdust + rice straw (1:1) (9.90 mm and 72.90 mm, respectively). The highest number of fruiting body/packet was counted in sawdust (6.67). Among the mother cultures the highest length of the stipe, number of fruiting body/packet and biological yield were found in sawdust mother spawn (23.27 mm, 6.67 and 45.47 g/packet, respectively). The highest diameter of stipe and thickness of pileus were observed in maize mother spawn (9.90 mm and 5.60 mm, respectively). The highest diameter of pileus was measured in rice mother spawn (67.57mm). In the combined effect of substrates and mother spawn materials the highest biological yield was recorded in sawdust mother spawn (50.80 g/packet) in which the substrate material was rice straw. The result revealed the good growth performance of oyster mushroom in terms of substrates and mother spawn. So, rice straw substrate and sawdust mother spawn can be recommended for the cultivation of oyster mushroom (Pleurotus ostreatus) among the tested substrates and mother spawn culture materials.