Because of their promises to combine the high yielding quality of the Asian rice with the local adaptability of the African rice, the New Rice for Africa (NERICA) rice varieties, which have won its creator Monty Jones the 2004 World Food Prize, are raising hopes for increased rice productivity in Africa. We use data from a sample of 1,500 farmers to consistently estimate the NERICA actual and potential adoption rates and determinants in Côte d'Ivoire. The NERICA actual adoption rate in 2000 is estimated to be 4%, although its potential adoption rate is estimated at 27%. The estimated 23% population "adoption gap" (difference between the 27% potential adoption rate and the 4% actual adoption rate) in 2000, which is because of solely to the limited diffusion of the NERICA in the population in 2000, suggests a large potential adoption impact that could be realized by a successful NERICA dissemination project.