Abstract
Objective: The objective of this study was to develop a non-grain spawn formulation for Pleurotus ostreatus with the D-optimal mixture design approach. The developed spawn was compared with the traditionally used grain spawn in terms of spawn running time and biological efficiency. Material and Methods: Non-grain spawn was produced in 25 different formulations using wheat bran, poplar sawdust, perlite, CaCO3, CaSO4 components. In addition, oat spawn containing 1% CaSO4 and 0.5% CaCO3 from cereals was used as the control group. Spawn running times and the biological efficiencies of the samples were determined. Results: The optimum mixing ratios for wheat bran, poplar sawdust, perlite, CaCO3, and CaSO4 used in the formulation of non-grain spawn production were determined as 11.44%, 28.87%, 50.74%, 5.89%, and 3.07%, respectively. The spawn running time of the improved non-grain spawn produced according to the above formulation was shortened by 20.16% as compared to the grain-derived spawn. This shows that the non-grain as one of the two different spawn production methods is technologically superior. Conclusion: In the leading countries in mushroom production, new technologies and formulations are being developed day by day to shorten the spawn running time and increase biological efficiency and mushroom yield. It is thought that this study will contribute to the development of spawn technology, which is an essential input in mushroom cultivation.
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