Sri Widodo is an Associate Professor in the Department of Agricultural Economics, Faculty of Agriculture, Gadjah Mada University, Yogyakarta. He was graduated from Gadjah Mada University, and received a Master Degree in Agricultural Economics from University of Wisconsin, Madison, USA in 1974. He awarded his PhD. in Agricultural Science from Tokyo University of Agriculture, Tokyo, Japan. He has been lectured on several courses in the area of Agricultural Economics, such as Agricultural Production Economics, Agricultural Development, Agricultural Policy, Microeconomics, Mathematical Economics, etc. Some researches has been done jointly and sponsored by IRRI, Nodai Research Institute of Tokyo University of Agriculture and some departments and research agencies of Indonesia. Some research reports have been published by those research institutes in IRRI's Farm-Level Constraints to High Rice Yield in Asia: 1974-77 (1979), in NRI‘s An Economic Study of Rice Farming in West Java (1986). Some articles on production efficiencies, frontier production function, transmigration, traditional peasant farmers Organization and others have been published in some scientific journals and magazines.