title: Adapting substrate formulas used for shiitake for production of brown Agaricus bisporus.
abstract: A pasteurized, non-composted substrate (basal mixture) consisting of oak sawdust (28%), millet (29%), rye (8%), peat (8%), alfalfa meal (4%), soybean flour (4%), wheat bran (9%), and CaCO3 (10%) was adapted from shiitake culture to produce the common cultivated mushroom (brown; portabello), Agaricus bisporus. Percentage biological efficiency (ratio of fresh mushroom harvested/oven-dry substrate weight, %BE) ranged from a low of 30.1% (when wheat straw was substituted for sawdust) to 77.1% for the basal mixture. Special, high gas-exchange bags were required to optimize mycelial growth during spawn run. Our formula may allow specialty mushroom growers to produce portabello mushrooms on a modified, pasteurized (110 degrees C for 20 min) substrate commonly used for shiitake production without the added expense of compost preparation.
authors.affiliation: El Colegio de la Frontera Sur, Chiapas, Mexico.
authors.forename: J E
authors.initials: JE
authors.lastname: Sánchez
authors.forename: D J
authors.initials: DJ
authors.lastname: Royse
mesh_terms: D000363:Agaricales / Q000378:metabolism*; D000364:Agaricus / Q000378:metabolism*; D000383:Agriculture / Q000379:methods*; D012987:Soil; D015003:Yeasts / Q000378:metabolism
chemical_list: D012987:Soil