James E. Ayars is a research agricultural engineer with United States Department of Agriculture, Agricultural Research Service (USDA-ARS) as an irrigation/drainage engineer. Dr. Ayars is responsible for developing research on the integrated management of irrigation and drainage in arid and semi-arid areas. He is currently investigating deficit irrigation strategies for perennial crops. His previous research focused on reusing saline drainage water for supplemental irrigation and managing disposal of saline drainage water. Prior to joining ARS, he was an assistant professor at the University of Maryland. He has had 2 sabbatical leaves in Australia. He has routinely spoken at professional conferences and has authored in excess of 200 publications. He is a member of the US Committee on Irrigation and Drainage, the American Society of Agricultural and Biological Engineers and EWRI. His degrees include: B of Agr. Engr from Cornell and M.S. and Ph.D. from Colorado State University.