Effect of Different Supplements on Spent Mushroom Substrate (SMS) of Pleurotus species

摘要

The species Pleurotus sajor-caju and Pleurotus florida were cultivated on paddy straw beds with and without supplements viz, wheat bran, rice bran, gram flour, neem cake and inorganic fertilizers. The paddy straw (1 Kg dry or about 3.5 Kg wet weight)and spawn @ 3% wet weight of paddy straw were common to all the treatments. The supplements were added on dry weight basis. One gram digested sample was used for estimation of phosphorus, patassium, calcium sulphur and iron content. The results of calcium and iron were confirmed on Perkin Elmer's AAnalyst 200 modal of Atomic Absorption Spectrophotometer (AAS). The data on nutritionally important element content revealed that the oven dried mushroom contained 1.58 to 2.42 per cent phosphorus, 2,30 to 3.18 per cent potassium, 22.7 to 44.0 mg calcium, 178.8 to 257.9 mg sulphur and 11.1 to 15.4 mg iron per 100 g of mushroom.