The influence of spawn type and strain on yield, size and mushroom solids content of Agaricus bisporus produced on non-composted and spent mushroom compost

• Published in: Bioresource technology 2008-05, Vol.99 (8), p.3205-3212
• Main Authors: Mamiro, Delphina P., Royse, Daniel J.
• Format: Article
• Language: English
• Subjects: Agaricus - classification; Agaricus - growth & development; Agaricus bisporus; Agronomy. Soil science and plant productions; Biological and medical sciences; Biomass; Fertilizers; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Mushrooms; Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries; Plant Stems; Soil; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Species Specificity; Spent mushroom compost; Triticum; Triticum aestivum
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2007.05.073

Two crops of Agaricus bisporus (J. Lange) Imbach were grown on mixtures of non-composted substrate (NCS)/spent mushroom compost (SMC) or pasteurized Phase II compost (control). NCS consisted of oak sawdust (28% oven dry wt), millet (29%), rye (8%), peat (8%), ground alfalfa (4%), ground soybean (4%), wheat bran (9%), and CaCO 3 (10%). Substrates included 25/75 NCS/SMC, 50/50 NCS/SMC, and 75/25 NCS/SMC, NCS and Phase II compost. Spawn types and strains were evaluated for their effects on yield, biological efficiency (BE), size and mushroom solids content. Spawn types included millet, casing inoculum (CI), 50/50 CI/millet, or NCS while mushroom strains were of the brown or hybrid off-white variety (U 1 type). Mushroom yields and BEs on substrate mixtures of NCS and SMC were comparable to non-supplemented Phase II compost. The highest yield (12.8 kg/m 2) and BE (70.9%) were produced on a substrate mixture of 50/50 NCS/SMC and spawn type NCS. Mushroom solids content (7.1%) was highest from the brown strain produced on a 50/50 mixture of NCS/SMC.