Diffusion of Genetically Modified Crop Technology
Economic Research Working Paper No. 93
Auteur: Charles de Grazia
Auteur: Nicholas E. Rada
Auteur: Gregory Graff
Année de publication: 2026
Type de licence: 
DOI: English
Technology diffusion is central to the process of innovation, as new products or processes must be adopted for them to make meaningful contributions to societal welfare or economic growth. We focus here on the global diffusion of technology that has the potential to improve food insecurity and address challenges posed by climatic effects, genetically modified (GM) crops. We adopt a variety of sources and methods to demonstrate the reach and timing of genetically modified crop technology diffusion worldwide, relying primarily on national regulatory approval information. Specifically, we depict the international adoption of genetically modified crop technology over time and assess the rate at which GM cotton, maize, and soybeans have been adopted within countries. In addition, we examine two case studies that assess an underused information source—trademark data—to determine whether they provide an alternative measure of diffusion. The case studies focus on two different contexts: established branded technologies and nascent technologies. In addition to significant overlap with regulatory approval data for established branded technologies, trademarks appear to provide an indicator of pre-commercialization in countries where regulatory approval coverage can expand. We end with guidance on when trademarks may serve as an indicator of international technology diffusion.
