Yield Response of Oyster Mushroom (Pleurotus ostreatus) on Substrate Composed from Wheat Straw and Cotton Seed Waste

Mushroom production has been gaining uppermost interests from scientific point of view due their nutritional values and medicinal importance’s. In this report, the effect of substrates’ composed from different mix ratio of wheat straws and cotton seed waste on growth, yield and yield related parameters of oyster (Pleurotus ostreatus) mushroom were presented. The experiment was lied out in different mix ratio of wheat straws and cotton seed waste for ten treatments with two replications in randomized complete design. The quantitative data including days taken for full colonization, days from colonization to primordial formation and days after primordial emergences to first harvest were recorded. The measurements of growth and yield parameters viz. cap-diameters, stipe length, number of fruits, aborts, bunches, biological efficiencies and total biomass were also recorded. The shortest days of primordial emergences 2.88days (T10) after mycelium fully colonize the substrates, days of first harvesting after primordial emergences 3days (T7), longest cap-diameters 11.35cm (T3), stipe length 4.39cm (T9), maximum number of bunches 5(T3,T5 and T8), maximum fresh weight 593.5g (T3) in 1st flush, were produced under different mix ratio of wheat straws supplemented with cotton seed wastes. Treatments T2 and T6 of wheat straw and cotton seed waste substrate where gave higher total biomass and biological efficacy 1382g and 183.65% respectively so that it could be recommended for pilot scale and large scale production of oyster mushroom.