Comparative Study on Cultivation, Yield Performance and Proximate Composition of Pleurotus pulmonarius Fries. (Quelet) on Rice Straw and Banana Leaves

摘要

Cultivation of Pleurotus pulmonarius is currently gaining global attention owing to their gourmet and culinary qualities coupled with their longer shelf In this pilot study, 10 g spawn of P. pulmonarius was cultivated on 300 g of different substratesnamely; rice straw and banana leaves. Each substrate was supplemented with rice bran and wheat bran separately at a varying composition viz., 0, 10, 20 and 30% w/w. The mixtures were prepared in triplicates and then incubated at 28±2°C for 14 days. Theresuks showed that substrates and additive types with their percentage concentrations significantly influenced the mushroom qualities, yield and proximate composition (P s 0.05). Banana leaves with wheat bran additives, irrespective of their percentageconcentration, had better mushroom quality/size, yield, biological efficiency and proximate composition than rice bran and its performance in rice straw. In rice straw, 30% wheat bran had the highest stipe length of 7.1 cm at flush 1, but a slight reduction in was recorded at flush 2 with 30% rice bran best with 6.8 cm while 10% wheat bran had the highest value (7.2 cm) at flush 3. On banana leaves and 30% wheat bran had the highest stipe length of 7.3 cm at flush 1, 20% rank highest with 6.8 cm and 6.4cm for flush 2 and 3 respectively. Also, 10% wheat bran had stipe length of 6.4 cm at flush 3. Similar trends were also observed in pileus diameter and the mushroom height. The total yield and biological efficiency of mushroom was highest at 30% rice bran in rice straw with 76.52 g and 25.51% respectively while 10% wheat bran was highest in banana leaves with 75.3 g and 25.1% respectively. In rice straw, 30% wheat bran had the highest crude protein (24.24%), lipid (7.15%) and Ethanol Soluble sugar with(12.81%) while 30% rice bran recorded the highest ash and crude fibre contents with 9.59 and 7.59% respectively. Also, the moisture content was highest at 10% wheat bran with 6.44%. On banana leaves, 30% wheat bran recorded the highest crude protein andlipid contents with 27.98 and 8.77% respectively. 10 % wheat bran recorded the highest moisture and ash content with 7.02 and 8.84 respectively. 30% rice bran recorded the highest crude fibre with 7.98% while the ethanol soluble sugar was highest in 10%rice bran with 12.66%. This empirical information will guide the farmers in the selection of substrates and additives for the successful establishment of mushroom farm with healthy and vigorous mushrooms.