June 2, 2014
On April 25, 2014 the National Organic Program released a proposed guidance document regarding Substances Used in Postharvest Handling of Organic Products. This guidance addresses the materials that may be used in on-farm or other immediate postharvest situations. This guidance clarifies some confusion between what materials, such as diatomaceous earth or carbon dioxide, could be used in what contexts in a postharvest setting. Comments are due by June 24.