Fruiting bodies yield of oyster mushroom (Pleurotus columbinus) as affected by different portions of compost in the substrate

Mohamed F Mohamed,Emad F S Refaei,Sayed H Abdelgalil,Mohamed M A Abdalla

doi:10.1007/s40093-016-0138-2

Abstract

A study was conducted to assess production of Pleurotus columbinus mushroom fruiting bodies for different formulations of rice or corn straw substrates mixed at different percent portions with the corresponding composted straw. These formulations were: (1) raw straw (RS) mixed with 5 % composted straw (CS), (2) RS mixed with 10 % CS, (3) RS mixed with 15 % CS, (4) RS mixed with 25 % CS, (5) RS mixed with 50 % CS, and (6) 100 % RS. Composted straw (CS) was made of moistened chopped RS mixed with chicken manure and soil (4:1:1, v/v). Data showed a magnificent impact of the substrate on oyster mushroom fruiting bodies yield and characteristics. There was a significant progressive upgrading in all parameters studied of mushroom growth and crop outcome with increasing the percentage of CS mixed with the RS substrate up to 15 %. Utilizing CS at 25 % significantly downgraded these parameters. No mushroom growth was observed at all when cultivated in medium contained 50 % CS. Instead, molds of different colors grew on that latter substrate mixture. The formulation containing 15 % CS distinctly gave the uppermost fruiting bodies yield, biological efficiency, earliness for pinheads formation, fruiting body cap diameter, thickness and weight and stem diameter, length and weight. Up to 80 % increase in fruiting bodies crop outcome relative to sole RS was detected. This study suggests that composted straw substrates hold a great promise for the development of Pleurotus mushroom production industry.

Highlights

The cultivated Pleurotus mushrooms include a number of different species: Pleurotus ostreatus, Pleurotus sajorcaju, Pleurotus columbinus, Pleurotus cystidus, Pleurotus citrinopileatus, and Pleurotus flabellatus
These formulations were: (1) raw straw (RS) mixed with 5 % composted straw (CS), (2) RS mixed with 10 % CS, (3) RS mixed with 15 % CS, (4) RS mixed with 25 % CS, (5) RS mixed with 50 % CS, and (6) 100 % RS
This study suggests that composted straw substrates hold a great promise for the development of Pleurotus mushroom production industry

Summary

Introduction

The cultivated Pleurotus mushrooms include a number of different species: Pleurotus ostreatus, Pleurotus sajorcaju, Pleurotus columbinus, Pleurotus cystidus, Pleurotus citrinopileatus, and Pleurotus flabellatus. Pleurotus mushrooms are widespread in the temperate zones representing the third largest groups of the cultivated edible mushrooms in the world (Mendez et al 2005; Sarangi et al 2006; Sher et al 2010). China is the major producer of oyster mushroom. The production of this mushroom species is estimated to be 25 % of the total world production of cultivated mushrooms. The Pleurotus mushrooms are nutritionally and gastronomically important (Sarangi et al 2006; Valverde et al 2015). Mushroom spent substrate can be potentially utilized in crop organic production (Lopes et al 2015)

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Results

Conclusion