EFFECT OF SUBSTRATE AMOUNT AND SPAWNING METHOD ON GROWTH AND YIELD OF EAR MUSHROOM

Abstract

The experiment was conducted at the laboratory and culture house of Mushroom Development Institute, Sobhanbang, Savar, Dhaka during the period from March to August 2021 to study the effect of different substrate amount and spawning method on the growth and yield of ear mushroom. The experiment consisted of two factors. Factor A: Six different amount of substrates viz., B 1 =250 g, B 2 ii = 500 g, B 3 = 750 g, B 4 = 1250 g, B 6 = 1500 g and Factor B: Three different spawning methods viz., M 1 = Top spawning, M 2 = Thorough spawning and M 3 = Layer spawning. The experiment was laid out in completely randomized design with four replications. Data on different growth and yield parameters were recorded and significant variation was found in different studied parameters. In case of different substrate amount B 5 treatment gave the maximum number of fruiting body per packet (24.02), weight of individual fruiting body (3.22 g), length of pileus (9.15 cm), thickness of pileus (2.75 mm), diameter of pileus (6.92 cm), biological yield (275.40 g), economic yield (259.47 g), dry yield (61.89 g), biological efficiency (64.13%) and benefit cost ratio (3.37). In case of spawning method, the highest mycelium running rate (0.66 cm), number of fruiting body per packet (24.88), weight of individual fruiting body (3.02 g), length of pileus (9.68 cm), thickness of pileus (2.63 mm), diameter of pileus (5.56 cm), biological yield (262.99 g), economic yield (237.46 g), dry yield (56.71 g), biological efficiency (67.76%) and benefit cost ratio (3.62) was recorded from M 3

treatment. In case of combined effects, highest number of fruiting body per packet (24.83), length of pileus (9.74 cm), thickness of pileus (2.87 mm), diameter of pileus (7.22 cm), weight of individual fruiting body (3.39 g), biological yield (277.81 g), economic yield (263.70 g), dry yield (61.98 g), biological efficiency (78.36%) and benefit cost ratio (4.12) was recorded from B 5 M 3 treatment combination. In this experiment, due to the interaction between B 5 substrate amount with M 3 spawning method showed better performance in growth and yield of ear mushroom.