The main objective of this article is to analyze the impact of institutional constraints on the adoption and use intensity of improved rice varieties at the farm level. Among institutional barriers to the adoption of improved technologies by farming households, this paper focuses on credit constraints and deficiencies of transportation infrastructures. In our methodological process, a formal theoretical framework is examined before specifying the econometric model. The theoretical findings show a positive relationship between the amount of credit available and the adoption level of improved rice varieties. They also indicate a negative impact of transportation costs on the intensity of use of these new varieties. Econometric evidence was implemented from 311 Ivorian rice farmers using a fractional logit model. The econometric estimates confirm the findings that improving access to credit and reducing transportation costs encourage the adoption of modern rice varieties.