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@article{Ashrafi_Mian_Rahman_Jahiruddin_2014, title={Recycling of Spent Mushroom Substrate for the Production of Oyster Mushroom}, volume={5}, url={https://www.updatepublishing.com/journal/index.php/rib/article/view/2452}, abstractNote={<p><strong>The huge amount of spent mushroom substrate (SMS) was disposed, especially around the mushroom cultivation complexes. The present study aimed at utilizing this SMS in a productive and sustainable way. Experiment was carried out to reuse of SMS of oyster mushroom for the production of oyster mushroom at Bangladesh Agricultural University (BAU), Mymensingh. Two mushroom species (<em>Pleurotus ostreatus</em> and <em>P. florida</em>) were grown on SMS supplemented with sawdust and wheat bran at different proportions. The results showed that SMS supplement with 60% sawdust + 20% wheat bran demonstrated the highest biological yield, economic yield and biological efficiency for both <em>P. ostreatus</em> and <em>P. florida. </em>Yield parameters were increased with increasing C/N ratio where as 36:1 C/N ratio exhibited the highest yield. The C/N ratio below or above 36:1 decreased yield of both species of oyster mushroom. </strong><strong>The optimum C/N ratio for economic yield varied between the two oyster mushroom species and found to be 35.2 for <em>P. ostreatus</em> against C/N ratio of 40.1 for <em>P. florida</em>. Concerning biological yield and biological efficiency the optimum C/N ratio was found 35.7 for <em>P. Ostreatus </em>and 40.6 for <em>P. florida</em>. </strong><strong>The study emphatically indicated that reuse of spent mushroom substrate with supplementation can be a good solution to address the disposal problem where as supplemented SMS can be a good substrate for further mushroom production. </strong></p>}, number={2}, journal={Research in Biotechnology}, author={Ashrafi, R and Mian, M. H. and Rahman, M.M. and Jahiruddin, M.}, year={2014}, month={Apr.} }