EFFECT OF DlFFERENT SAWDUST ON THE GROWTH, YiELD AND PROXIMATE COMPOSITION OF WHITE OYSTER MUSHROOM (Pleurotus ostreatus)

Abstract

The study was conducted at the Biochemistry laboratory and Mushroom Culture House (MCH) of the Department of Biochemistry, Sher-e-Bangla Agricultural University, Dhaka during the period from August to December 2014 to study the effect of different sawdust on the growth, yield and proximate composition of white oyster mushroom (Pleurotus ostreatust. Mother culture of white oyster mushroom was collected in National Mushroom Development and Extension Center (NAMDEC), Savar, Dhaka. The experiment consists of SLX different type of sawdust with five replications. The experiment considered the following treatments: To: Mixture of all sawdust, T,: Mango sawdust; T2: Raintree sawdust; T3: Segun sawdust; T4: Gamari sawdust and Ts: Mahogony sawdust. The experiment was laid out in single factor Completely Randomized Design (CRO). The highest average number of fruiting body per packet (57.20) was observed in Ts, whereas the lowest (47.00) in T2. The highest average weight of fruiting body (4.45 g) was observed in Ts While the lowest (3.76 g) in T•. The highest biological yield (227.68 g) was observed in T5• while the lowest (204.78 g) in T4• The highest economic yield (207.58 g) was observed in Ts, while the lowest (181.96 g) in T4• The highest BCR (4.25) was observed in Ts. whereas the lowest (3.62) in T4• The highest moisture content (87.77%) was observed in T,., while the lowest (85.84%) in Ts. The highest dry matter content (14.16%) was observed in Ts, whereas the lowest (12.23%) in T4• The highest protein content (24.97%) was observed in Ts, while the lowest (24.U%) in T•. The highest lipid content (6.15%) was observed in Ts. while the lowest (5.72%) in T~. The highest calcium content (17.33 mg/IOO g) was observed in To, while the lowest (15.72 mg/IOO g) in T•. The highest magnesium content (14.50 mg/IOO g) was observed in Ts, while the lowest (13.35 mg/IOO g) in T4• The highest iron content (47.46 mg/IOO g) was observed in T .. while the lowest (44.89 mg/lOO g) in T4•