Professor of Economics
Iowa State University
Dr. Duffy received his Ph.D. in Agricultural Economics from Penn State in 1981. He received a B.S. in Natural Resources from University of Nebraska in 1975 and a M.S. in Agricultural Economics from Nebraska in 1977. He joined the ISU staff as an Extension area farm management specialist in 1984 and moved to his present position on campus in 1985. Prior to joining Iowa State he worked as an economic researcher for the USDA in Washington, D.C.
Dr. Duffy works as an Extension Economist in farm management at Iowa State University. He is the Director of Graduate Education in Sustainable Agriculture.
Dr. Duffy is currently responsible for the annual land value survey, cost of crop production estimates, Iowa farm costs and returns publication, and he is state leader for the Extension Farm Financial Planning Program. His research activities include determinants of farm profitability, small farms, soil conservation, integrated pest management, and sustainable agriculture.
Dr. Duffy is a member of the American Agricultural Economics Association and Soil and Water Conservation Society. In 1984 he received the USDA Administrators Special Merit Award for outstanding research. He has received numerous Extension awards including the College of Agriculture Excellence in Extension and Research Award and Outstanding Achievement in Extension. Dr. Duffy received the Sustainable Agriculture Achievement Award from the Practical Farmers of Iowa in 1996. In 2009, Dr. Duffy was named one of the top 25 Iowans of influence by Iowa Farmer Today.