Eight different kinds of papers, viz., glaze paper, brown paper, news paper, magazine paper, chart paper, kite paper, rough copy paper and A-4 size printing paper, and two types of cardboard viz., corrugated cardboard and card board were evaluated for different manifestations of white oyster mushroom Pleurotus florida Strain-P1. Among them news paper was later treated as a control. The mushroom was utilized all the substrates for their growth and sporophore formation. Majority of substrates were taken almost equal time for spawn run, primordial development and fruiting bodies maturation. The measured parameters were net yield (Weight of fresh mushrooms), biological efficiency, number of fruiting bodies produced and average weight of sporophores varied among themselves. The crop of mushroom was harvested in three flushes where yield and biological efficiency ranged 190-495 gm, 38-99% for the substrate used. Magazine paper (450 gm; 90%) and card board (495 gm; 99%) produced significant (P=0.05) yield and biological efficiency over control. They also produced significant number of mushroom fruit bodies (56 and 64, respectively). Corrugated cardboard (10.29 gm) was found significant in terms of average weight per sporocarp. The percentage yield of different substrates was also evaluated. Among the substrates, card board contributed 14% of total mushroom production followed by magazine paper (13%) and news paper (12%).
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