Use of spent mushroom compost in a cultivation of Abalone mushroom (Pleurotus abalonus Han. Chen et Cheng) and Jew's Ear mushroom (Auricularia polytricha (Mont.) Sacc.) in plastic bags

Abstract

Rubber sawdust and spent mushroom compost were used as substrates for a cultivation of Pleurotus abalonus and Auricularia polytricha, as they still contain enough nutritions for other mushrooms, were determined. Five spawning media were tested: spent mushroom alone, spent mushroom mixed with rubber sawdust in 3:1, 1:1 and 1:3 ratio, rubber sawdust alone, and rubber sawdust supplemented with 8% rice bran, 3% Ca(OH)2, 0.2% Mg(SO4) and 2.0% CaSO4.2(H2O) by weight. The comparisons were evaluated on number of days for full colonization of the mycelia in a 950 g spawning medium number of basidiocarp and yield harvested ninety day after inoculation. P. abalonus yielded highest in the spawning medium containing only rubber sawdust, with the yield of 250.93 g/bag (B.E.=72.76%). The spawning medium composed of spent mushroom mixed with rubber sawdust in a 1:3 ratio was suitable for A. polytricha cultivation. The yield was 133.13 g/bag, which was not statistically different(P>0.05) from using only rubber sawdust (139.68 g/bag).