Effect of different in-organic additives on growth of spawn and production of Pleurotus species (P. djamor and P. sajor-caju)

Abstract

The present study is growth of spawn and yield of Pleurotus spp. against different inorganic additives in laboratory and crop room. Three different type inorganic additives viz. ferrous sulphate, zinc sulphate and magnesium sulphate @ 0.5 and 1.0% were mixed as additive with wheat grain in three replications. Maximum spawn growth of P. djamor (90.00 mm) was recorded in Magnesium sulphate 0.5% and zinc sulphate 0.5%. While in case of P. sajor-caju, maximum spawn growth (90.00 mm) was recorded in ferrous sulphate 0.5% and zinc sulphate 0.5%. The maximum growth rate of P. djamor (6.00 mm/day) was recorded in zinc sulphate 0.5% and magnesium sulphate 0.5%. While in P. sajorcaju maximum growth rate (6.00 mm/day) was recorded in zinc sulphate 0.5% and ferrous sulphate 0.5%. The maximum yield of P. djamor was observed in ferrous sulphate 1.0% (462.66 gm/kg of dry substrates with 46.26% biological efficiency). In case of P. sajor-caju maximum yield was observed in ferrous sulphate 1.0% (790.33 gm/kg of dry substrates with 79.03% biological efficiency).