Wang, Sun Ling; Ball, V. Eldon; Fulginiti, Lilyan E.; … - International Association of Agricultural Economists - IAAE - 2012
This paper uses panel data for the 1980-2004 period to estimate the contributions of public research to U.S. agricultural productivity growth. Local and social internal rates of return are estimated accounting for the effects of R&D spill-in, extension activities and road density. R&D spill-in...
