The National Organic Agriculture Expertise Directory was first published by Iowa State University in 2005 and was based on surveys sent to the Land-Grant University (LGU) in each state to determine the number of researchers and extension staff working in organic agriculture.

The greater number of faculty and staff working in organic ag in 2021 reflects the growing demand from producers interested in organic practices and the environmental solutions organic farming can offer. 123 LGU individuals from all 50 states self-identified as working in organic ag research and extension.

Previously known as SP 0273 - National Directory Organic Agriculture Expertise July 2005