Opportunity
Federal Register #AMS-SC-25-0056
USDA AMS Revises Mushroom Grade Standards, Adds Portabella Grade
Buyer
U.S. Department of Agriculture, Agricultural Marketing Service
Posted
August 25, 2026
Identifier
AMS-SC-25-0056
NAICS
926140
This notice announces a revision to the U.S. Standards for Grades of Mushrooms by the Department of Agriculture's Agricultural Marketing Service (AMS). - Government Buyer: - Department of Agriculture (USDA), Agricultural Marketing Service (AMS) - Key Stakeholders: - American Mushroom Institute (AMI) provided input and petitioned for changes - Main Changes: - Addition of a new grade specifically for portabella mushrooms - Removal of size as a criterion for each grade; size now addressed in a separate section - Updated tolerances for defects to reflect current production and handling practices - Revisions to terminology, definitions, and defect scoring guides for clarity and consistency - Notable Details: - No products, part numbers, or purchase quantities are requested - This is a standards revision, not a procurement or solicitation for goods/services - The notice is part of the federal rulemaking process to guide commercial mushroom practices
Description
The Agricultural Marketing Service (AMS) of the Department of Agriculture (USDA) is revising the U.S. Standards for Grades of Mushrooms to add a grade for portabella mushrooms, remove size from the criteria for each grade and create a separate section for size, and revise the tolerances for defects consistent with modern production and handling practices. AMS is also updating terminology, definitions, and defect scoring guides throughout the grade standards. These changes align the grade standards with modern harvesting practices and provide guidance for the effective utilization of this commodity.