The U.S. Department of Agriculture’s (USDA’s) Agricultural Marketing Service has announced an October 22-24, 2013, public meeting of the National Organic Standards Board (NOSB) in Louisville, Kentucky. The meeting will address “several petitions pertaining to changes to the National List of Allowed and Prohibited Substances, including several substances for use in aquaculture, streptomycin for use to control fire blight in pears and apples, and glycerin,” in addition to featuring updates from the NOSB subcommittees on Compliance, Accreditation, and Certification; Crops; Handling; Livestock; Materials; Policy Development; and Genetically Modified Organisms (GMO). In particular, the GMO Ad-Hoc Subcommittee will discuss how to ensure and enforce the genetic purity of seed used in organic crop production. NOSB will accept written public comments on the meeting agenda and registrations for oral public comments by October 1, 2013. See Federal Register and NOSB Press Release, September 5, 2013.