Washington, DC–(ENEWSPF)–December 19, 2011. The National Organic Program (NOP) of the United States Department of Agriculture (USDA) has released a comprehensive list of the expiration dates for all materials currently allowed for use in organic production and handling. These materials, which are collectively referred to as the National List of Allowed and Prohibited Substances (National List), must be reviewed by the National Organic Standards Board (NOSB) every five years. Since materials have been added…






