http://localhost:8080/handle/123456789/2810 2026-04-08T15:00:43Z 2026-04-08T15:00:43Z RAHMAN, MD. HAFIZUR http://localhost:8080/handle/123456789/307 2019-10-02T07:04:33Z 2009-12-01T00:00:00Z

STUDY ON PERFORMANCE OF OYSTER MUSHROOM (Pleurotus ostreatus) GROWN ON SUPPLEMENTED RICE STRAW RAHMAN, MD. HAFIZUR The experiment was carried out to investigate the performance of different levels of cow dung, wheat bran and chemical fertilizer as supplement with rice straw on the yield and proximate composition of oyster mushroom. The highest mycelium running rate (0.73 cm/day) was observed due to rice straw supplemented with chemical fertilizer (N=0.5%, P=0.3% K=0.3%). The highest time from stimulation to primordia initiation (8.37 days) was observed in (Rice straw + 0% chemical fertilizer) treatment. The lowest time from primordia initiation to harvest (3.17 days) and average number of fruiting body/packet (58.02) was observed due to rice straw supplemented with chemical fertilizer (N=0.4%, P=0.3% K=0.3%). The highest average weight of individual fruiting body (4.71g), the highest crude fiber (24.03 %) and the lowest lipid (3.34 %) were found from rice straw supplemented with 10% cow dung. The highest average number of primordia/packet (73.67), the highest biological yield (247.92 g), economic yield (241.65 g), dry yield (26.93 g), biological efficiency (93.56 %), benefit cost ratio (6.02) and the highest dry matter percentage of (9.92 %) were observed from rice straw supplemented with chemical fertilizer (N=0.5%, P=0.3% K=0.3%). The highest moisture content (91.08 %) was observed in (Rice straw + 20% wheat bran) treatment. The highest protein (32.17 %) content was observed in (Rice straw + N=0.6%, P=0.3% K=0.3%) treatment. The highest carbohydrate (56.00 %) was found in (Rice straw + 0% chemical fertilizer) treatment and ash (8.40 %) was found in (Rice straw + N=0.6%, P=0.3% K=0.3%) treatment. Among the treatments, Rice straw + chemical fertilizer (N=0.5%, P=0.3% K=0.3%) can be recommended as an economically effective due to the highest yield. On the other hand Rice straw +10% cow dung or Rice straw + 30% wheat bran treatment may be a fair option. A Thesis Submitted to the Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN BIOCHEMISTRY SEMESTER: July-December, 2009

2009-12-01T00:00:00Z ALI, MD. ROSTOM http://localhost:8080/handle/123456789/306 2019-10-17T11:12:51Z 2009-12-01T00:00:00Z

STUDY ON SUPPLEMENTATION OF WHEAT BRAN WITH SUGARCANE BAGASSE ON YIELD AND PROXIMATE COMPOSITION OF OYSTER MUSHROOM (Pleurotus ostreatus) ALI, MD. ROSTOM The present study was carried out during the period of February to July, 2009 to investigate the performance of different levels of wheat bran as supplement with sugarcane bagasse on the production of oyster mushroom and analysis of their proximate composition. The highest mycelium running rate was observed due to sugarcane bagasse supplemented with wheat bran @ 40% (T ) (0.96 cm). The highest time from stimulation to primordia initiation was observed in T 5 days). The lowest time from primordia initiation to harvest was in the treatment of T4 (3.23 days). The highest average number of primordia/packet (70.67), average number of fruiting body/packet (61.00) was observed in the treatment of T . The highest average weight of individual fruiting body was observed in the treatment of T (3.69 g). The highest biological yield (254.7 g), economic yield (243.3 g), dry matter (23.40 g), biological efficiency (87.82%) and cost benefit ratio (8.29) was counted under treatment of T 4 . The highest moisture content (90.45 %) was observed in T 5 4 where as the highest dry matter percentage of (10.07 %) was found in the fruiting body of T . The highest content protein (30.31 %), ash (9.15 %) and crud fiber (24.07 %) and the lowest lipid (3.90 %) and carbohydrate (32.57 %) was found in the treatment of T 2 4 . The highest percentage of nitrogen 1 (11.5 5 (4.85), potassium (1.39g/mg), calcium (22.08mg), magnesium (20.21mg), sulfur (0.042g/mg), iron (43.11mg) was counted under T but the highest percentage of phosphorus was counted under treatment of T 4 (0.92). Therefore, it can be concluded that sugarcane bagasse supplemented with 30% wheat bran can be further used as a better substrate for oyster mushroom production reducing cost and increasing the yield and nutritional quality. 1 A Thesis Submitted to the Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207 in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (M.S.) IN BIOCHEMISTRY SEMESTER: January-June’09

2009-12-01T00:00:00Z