Abstract:
A research was carried out to investigate optimum pH values for the cultivation of oyster mushrooms(P/eurotus
ostreatus). Accordingly, initial pH values of the nine different growth substrates were adjusted as 5.4,5.6,7.1,7.3,7.5,
8.1,8.2,8.6, and 8.8 and the final values upon completion of the sterilization procedure was also measured. Sawdust
was used as the basal ingredient for substrate preparation with the addition of rice bran, green gram powder, CaC03
and MgS04 as supplements. Experiment was laid out in completely randomized design with 9 treatments and 10
replicates. Average yield (g), piles diameter (cm), stalk length (cm) and number of flowers per flush were measured.
Average yield was highest in the media with pH 5.6.With the decreasing pH in the medium mushroom yield increased
and after pH of 5.6 it was decreased/ However, no significant difference was observed between the treatments on
piles diameter, stalk length and number of flowers per flush.
