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Sampling methodology in adoption-and-impact assessment studies of agricultural technology is unique and, in a certain way, complex. Firstly, assessment studies are conducted over time, and, in most cases, a lack of baseline studies hinders the analysis of the adoption process. A methodology that ...


Marín Arredondo, NHenry, GuyPerdomo, PP[Diseño muestral y análisis de encuestas para evaluar adopción de tecnología de producción de yuca en la Costa Atlántica de Colombia]Diseño muestral y análisis de encuestas para evaluar adopción de tecnología de producción de yuca en la Costa Atlántica de Colombia
Autor: Henry, Guy

In an assessment of the possible benefits to consumers and producers from snap bean research, four different technologies are proposed and their impact analyzed. Benefits are measured by using a welfare analysis and calculating the internal rate of return under different assumptions. The range of...


Henry, Guy[Expected benefits of snap bean research for the developing world]Expected benefits of snap bean research for the developing world

The identification, introduction and development of cassava drying technology has led to a more stable and wider cassava market in several important cassava growing regions in Latin America. In turn, this has been an incentive for small-scale cassava farmers to increase both cassava area and prod...


Best, R.Henry, Guy[Role of small-scale cassava drying plants in improving equitable rural economic growth and development]Role of small-scale cassava drying plants in improving equitable rural economic growth and development
Mosquera P., L.Chacón P, PMHenry, GuyChuzel, Gérard[Cassava starch in Northern Cauca, Colombia: socioeconomic evaluation of its production and commerce]Cassava starch in Northern Cauca, Colombia: socioeconomic evaluation of its production and commerce

Adoption and impact studies have been designed to determine the returns to resources invested in research. They are important as a tool for focusing R&D activities and as a mechanism for ex ante and ex post feedback. The document is divided into four parts: the first reviews recent adoption and i...


Gottret, María VerónicaHenry, Guy[La importancia de los estudios de adopción e impacto: el caso del proyecto integrado de yuca en la costa norte de Colombia]La importancia de los estudios de adopción e impacto: el caso del proyecto integrado de yuca en la costa norte de Colombia

Gottret, María VerónicaHenry, GuyCortéz, M.[Impact of integrated cassava projects in the North Coast of Colombia]Impact of integrated cassava projects in the North Coast of Colombia

Centro Internacional de Agricultura Tropical, ClAT`s 12 year experience in developing the Integrated Cassava Research and Development Project (ICRDP) approach and methodology, is discussed in this paper. The origin, justification, methodology, results and lessons learned from this approach are pr...


Ospina Patiño, BernardoPoats, SVHenry, Guy[Integrated cassava research and development projects in Colombia, Ecuador and Brazil : an overview of CIAT`s experiences]Integrated cassava research and development projects in Colombia, Ecuador and Brazil : an overview of CIAT`s experiences

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