AgEcon Search >
International Association of Agricultural Economists >
2012 Conference, August 18-24, 2012, Foz do Iguaçu, Brazil >
Please use this identifier to cite or link to this item:
|Title: ||Benefits of Public R&D in U.S. Agriculture: Spill-Ins, Extension, and Roads|
|Authors: ||Wang, Sun Ling|
Ball, V. Eldon
Fulginiti, Lilyan E.
Plastina, Alejandro S.
|Authors (Email): ||Wang, Sun Ling (email@example.com)|
internal rate of return
|JEL Codes: ||Q16|
|Issue Date: ||2012|
|Abstract: ||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 proxies were constructed based on both geographic proximity and production profile to examine the sensitivity of the rates of return to these alternatives. We find that extension activities, road density, and R&D spill-ins, play an important role in enhancing the benefit of public R&D investments. We also find that the local internal rates of return, although high, have declined through time along with investments in extension, while the social rates have not. Yet, the social rates of return are not robust to the choice of spill-in proxy.|
|Institution/Association: ||International Association of Agricultural Economists>2012 Conference, August 18-24, 2012, Foz do Iguaçu, Brazil|
|Collections:||2012 Conference, August 18-24, 2012, Foz do Iguaçu, Brazil|
Recommend this item
Files in This Item:
All items in AgEcon Search are protected by copyright.