Effect of hot water treatment of wheat straw on the growth and yield of oyster mushroom (Pleurotus ostreatus)
H. Nasrin, K. Akhter*, N. Sultana and M.H. Rahman
Corresponding address: Email: khadijaakhter@ymail.com
Abstract
The experiment was carried out to investigate the effect of hot water treatment of wheat straw on the growth and yield of oyster mushroom (Pleurotus ostreatus) during the period from January to June 2013 in Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The highest mycelium running rate (0.69 cm/day), the lowest days (15.33) required to complete mycelium running in spawn packet, the lowest time (5 days) required from stimulation to primordial initiation, the lowest time (3.67 days) from primordial initiation to harvest and the lowest time (8.67 days) from stimulation to harvest were found in hot water treatment of wheat straw at 800C for 3 hours. The highest diameter of stalk (0.90 cm), diameter of pileus (6.67 cm) and thickness of pileus (0.87 cm) were in case of wheat straw treated at 800C for 3 hours. The highest average length of stalk (2.89 cm) was found wheat straw treated at 800C for 2 hours. Average number of primordia (78.33) was higher in case of hot water treatment of wheat straw at 1000C for 2 hours. Oyster mushroom grown on wheat straw treated at 600C for 3 hours gave the best result with the highest average number of fruiting body/packet (62.33). Average weight of individual fruiting body (3.97) was higher in case of hot water treatment of wheat straw at 1000C for 1 hour, when treated at 800C for 3 hours gave the best result with the highest average number of effective fruiting body/packet (46.67), the highest biological yield (180.71 gm), economic yield (175.23 gm), dry yield (18.85 gm), biological efficiency (108.52 %) and benefit cost ratio (4.67).
Key words: Oyster mushroom, Spawn, wheat straw, Hot water treatment.
