Effect of supplemented nutrition on yield of oyster mushroom, Hypsizygus ulmarius

Abstract

Effect of three chemical compounds on growth and yield of Blue Oyster mushroom, Hypsizygus ulmarius was studied in three separate experiments on soaking of substrate, spray on growing beds and soaking followed by spray. Soaking with Ferrous sulphate (FeSO₄) resulted maximum yield of sporocarps (726.2g per kg dry substrate) followed by Magnesium sulphate (MgSO₄), Potassium nitrate (KNO₃) and untreated (620g) respectively. In spray treatment, maximum yield of 792.8 g per kg dry substrate was recorded in FeSO₄ followed by MgSO₄, KNO₃ and untreated (595.0 g) respectively. Maximum yield of sporocarps (931.4 g per kg dry substrate) was recorded with T-3 (soaking in MgSO₄ solution followed by spray with FeSO₄) followed by T-6 (KNO₃ followed by FeSO₄), T-2 (MgSO₄ followed by KNO₃), T-4 (KNO₃ followed by MgSO₄), T-1 (soaking and spray with MgSO₄), T-5 (soaking and spray with KNO₃ solution), T-9 (soaking and spray with FeSO₄), T-10 (untreated), T-8 (FeSO₄ followed by KNO₃) and T-7 (FeSO₄ followed by MgSO₄) (591.2 g) respectively.