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Abstract Detail


Mycological Section

Loehr, Stephanie [1], Royse, Daniel [2].

Minimally composted substrate for production of Agaricus bisporus.

Total U.S. mushroom production (Agaricus bisporus) was valued at $913.5 million in 2008. This mushroom is produced on a two-phase composted substrate consisting of various mixtures of hay, cottonseed hulls, straw-bedded horse manure, seed meals, and gypsum. Substrate preparation may have negative environmental impacts such as offensive odor generation and runoff that may contaminate surface and groundwater. Elimination of phase I composting from the substrate production process may alleviate some of these concerns. We have attempted to eliminate phase I composting by subjecting milled stover (stalks, leaves, shucks, and cobs of corn (Zea mays)) to only phase II composting to produce a selective substrate. Mushroom yield was 21.3 kg/m2 (biological efficiency 79.5%) on supplemented (6% Lambert T6 at spawning and 9.5% Remo’s at casing) substrate. Growers may benefit from the use of this minimally composted substrate by reducing material and labor costs and dry matter loss while minimizing environmental impacts of mushroom substrate preparation.


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1 - The Pennsylvania State University, Department of Plant Pathology, 305 Buckhout Lab, University Park, PA, 16802, United States
2 - The Pennsylvania State University, Department of Plant Pathology, 316 Buckhout Laboratory, University Park, PA, 16802, United States

Keywords:
Agaricus bisporus
mushroom substrate
edible mushroom
corn stover
composting.

Presentation Type: Oral Paper:Papers for BSA Sections
Session: 74
Location: Cottonwood C/Snowbird Center
Date: Wednesday, July 29th, 2009
Time: 4:00 PM
Number: 74002
Abstract ID:389


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