Using of Appropriated Strains in the Practice of Compost Supplementation for Agaricus subrufescens Production

Diego C Zied,Maria L Zeraik,Jose E Pardo,Eustáquio S Dias,Arturo Pardo-Gimenez,Cinthia E C Caitano

doi:10.3389/fsufs.2018.00026

Abstract

The aim of this study was to analyse the viability of supplementation of Agaricus subrufescens compost with different organic materials, using 3 commercial strains. Compost was prepared by the traditional method and was used as a control (without supplemented). Six supplements were applied and can be separated into 4 categories: i) commercial supplements (recommended for Agaricus bisporus and Pleurotus ostreatus); ii) supplements based on agro-industrial waste (provided by peanut and acerola juice); iii) supplements based on noble grains (a mix with bran of soybean, corn and cotton); and iv) a blend of supplements ii and iii (peanut waste, acerola juice waste, and noble grains - a mixture of 33.3% each). The results showed that the practice of supplementation is an important tool to improve the yield in the industrial production of A. subrufescens. Waste materials and noble grains can be selected as quality supplements. The use of appropriated strains is essential for the success of the supplementation practice.

Highlights

An emerging Agaricus species, Agaricus subrufescens Peck, named Agaricus blazei Murrill sensu Heinemann, Agaricus rufotegulis Nauta, or Agaricus brasiliensis Wasser, M
Commercial supplements (Spawn Mate and Pro Mycel Gold) and noble grains showed the highest values of N, P, K, Mg, S, and Zn and, in this sense, are characterized as supplements with high nutritional content (Table 2)
The mix of supplements (33.3% peanut waste + 33.3% acerola juice waste + 33.3% noble grains) showed intermediate results, which were similar to the supplement formulated with the acerola juice waste, which had the highest proximity resulting in inferior distance in the Nearest Neighbor Method

Summary

Introduction

An emerging Agaricus species, Agaricus subrufescens Peck, named Agaricus blazei Murrill sensu Heinemann, Agaricus rufotegulis Nauta, or Agaricus brasiliensis Wasser, M. Amazonas & Stamets, has been an actively cultivated mushroom in Brazil since 90’s; when it was cultivated for first time in the Sao Paulo State and extended to other regions close to the Atlantic coast (Farnet et al, 2014). This ascend is because of the important medicinal proprieties of the mushrooms used for the treatment of cancer, leukemia, and hypertension, which are attributed to its active compounds, such as glycoproteins, β-d-glucans, saponins, steroids, tannins, polysaccharides, ergosterol, and fatty acids (Wang H. et al, 2013; Venkateshgobi et al, 2018). To improve the compost process, substrate supplementation has been used to provide nutrients to the developing mushroom, reducing the cultivation cycle and increasing productivity by up to 30% (Pardo-Giménez et al, 2012, 2016)

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Conclusion