Evenson, R. E.Gollin, D.2016-04-192016-04-192003Science 300(5620): 758-7620036-8075http://hdl.handle.net/10919/66496Metadata only recordThis report summarizes the findings of a recently completed study on the productivity impacts of international crop genetic improvement research in developing countries. Over the period 1960 to 2000, international agricultural research centers, in collaboration with national research programs, contributed to the development of "modern varieties" for many crops. These varieties have contributed to large increases in crop production. Productivity gains, however, have been uneven across crops and regions. Consumers generally benefited from declines in food prices. Farmers benefited only where cost reductions exceeded price reductions.text/plainen-USIn CopyrightFood securityLivelihoodsAdoption of innovationsAgricultureBiotechnologyGreen revolutionCrop genetic improvement (cgi)Crop productionCrop productivityInternational-agricultural-research-centersGovernanceAbstractCopyright 2003 American Association for the Advancement of Science