The experiment was conducted to determine the growth and yield of oyster mushroom using different substrates and analyzed its cost and return Experimental design was Completely Randomized Design (CRD) using the treatments- rice straw (T1) as control, rice hull (T2), coconut husk (T3) and dried banana leaves (T4) each of 500g and was replicated three times. Results revealed that T1- rice straw, T3- coconut husk and T4- dried banana leaves had the fastest mycelial growth after inoculation. It was also found out that lowest days of full spawn run to fruiting (8) was exhibited by dried banana leaves. Highest stipe length and yield was gathered on rice straw. Dried banana leaves and rice straw both have the highest stipe length, pileus diameter, number of fruits and number of flushing together with rice hull. Results showed that in the economic return, rice straw (187.75%) showed the most promising result followed by dried banana leaves (66.33%). It is therefore concluded that it is best to grow oyster mushroom on rice straw and its best alternative substrate would be dried banana leaves.
Keywords: oyster mushroom- rice straw- dried banana leaves- substrates- ROI
