EFFECT OF DIFFERENT MEDIA AND SPAWN RATE ON GROWTH AND YIELD OF OYSTER MUSHROOM

Abstract

The experiment was conducted at the Mushroom Development Institute, Shabhanbag, Savar, Dhaka during January to July, 2014. The experiment consists of two factors viz.: factor A: different media; M 1 = Paddy, M 2 = Millet and M = Wheat and factor B: spawn rate; S 1 = 1:1 ratio (Media : Sawdust), S = 2: 1 ratio (Media : Sawdust), S 3 = 3: 1 ratio (Media : Sawdust) and S = 4: 1 ratio (Media : Sawdust). The experiment was laid out in two factors Completely Randomized Design with three replications. In case of different media, the highest mycelium running rate (0.76 cm), number of fruiting per packet (70.54), number of effective fruiting body per packet (62.61), single weight of fruiting body 4 (5.06 g), biological yield (241.50 g), economic yield (227.00 g) and dry yield (21.83 g) was observed from M treatment. In case of spawn rate, the highest mycelium running rate (0.77 cm), number of fruiting body (71.08), 1 number of effective fruiting body (64.27),

single weight of fruiting body (4.94 g), biological yield (231.40 g), economic yield (217.40 g) and dry yield (20.50 g) was recorded from S treatment. In case of combined effect, the mycelium running rate (0.83 cm), number of fruiting body (75.63), number of effective fruiting body (71.38), single weight of fruiting body (5.61 g), biological yield (255.90 g), economic yield (241.30 g) and dry yield (25.10 g) was recorded from M 1 S . Among the treatments paddy media with mixed 4:1 ratio paddy and sawdust was found suitable for growth and yield of oyster mushroom.