Increasing the value of Phragmites australis straw in a sustainable integrated agriculture model (SIAM) comprising edible mushroom cultivation and spent mushroom substrate compost

• Published in: The Science of the total environment Vol. 869; p. 161807
• Main Authors: Ye, Dou, Hu, Qingxiu, Bai, Xue, Zhang, Wenjie, Guo, Hongwei
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15.04.2023
• Subjects: Agaricales; Agriculture - methods; Composting; Mushroom cultivation; Phragmites australis; Pleurotus - metabolism; Poaceae; Resource recycling; Spent mushroom substrate compost; Thailand; Thailand; Phragmites australis; Resource recycling; Spent mushroom substrate compost; Mushroom cultivation
• ISSN: 0048-9697; 1879-1026
• DOI: 10.1016/j.scitotenv.2023.161807

Because of the regular annual harvest, Phragmites australis used in wetland protection produces an abundance of straw, resulting in a large amount of straw waste. As a result, the extra straw should be used in a convenient and efficient manner. A comprehensive analysis of P. australis straw use in Pleurotus cultivation and spent mushroom substrate compost was performed in this study to increase its value. The lignocellulose content in the straw was shown to meet the nutritional requirements of the Pleurotus mushroom. Immediately thereafter, the replacement of bagasse with P. australis proved to be reasonable for Pleurotus eryngii substrate and could generate a profit of ¥17,400 per 10,000 cultivation bags. Substituting P. australis for approximately 20 % to 40 % of bagasse is recommended for Pleurotus ostreatus cultivation and can yield a profit of approximately ¥16,000. Spent mushroom substrate compost was confirmed to increase the organic matter content, and post-compost use of this substrate as a fertilizer could increase economic income by approximately ¥1000 for every 10,000 bags. Overall, this recycling pathway for P. australis resources presents positive ecological and social benefits, and the model is a sustainable and eco-friendly solution for agricultural waste worthy of promotion and further application. [Display omitted] •Phragmites australis resource recycling based on SIAM is sensible and justifiable.•Lignocellulose composition in P. australis straw suitable for Pleurotus production•P. australis straw partial replacement in substrate could stabilize mushroom yield.•This model presents positive ecological and social benefits.