Coconut Coir and Beans Straw as Substrates for Mushroom Growth

Abstract

Coconut coir and beans straw could blend well for mushroom production. This would increase the biomass use and also serve as a way of recycling the agricultural wastes. The project was carried out to evaluate the mycelial growth rate, yield and cost benefit analysis of oyster mushroom (Pleurotus ostreatus) cultivation on sole coconut coir (CC), sole bean straw (BS), and a 2:3 ratio mixture of BS and CC (BS:CC Mix) as substrates. Each substrate type was subjected to 3 different composting periods of a day (no compost), 7days, and 14 days. Randomized complete block design with three replications was used for the experimental design. The best mushroom performance was obtained in the BS:CC Mix substrates, recording highest yields in the range of 43.2 - 47.4 g/kg substrate; the greatest biological efficiencies of 11.0 - 22.9% as well as the highest returns of 200.9 - 229.8%.  The results indicated that beans straw could be an effective supplement to coconut coir and other highly lignified substrates for mushroom production.

Keywords: coconut coir; beans straw; mycelia; cost benefit analysis; mixed substrates