This paper analyzed the factors that affect farmers' willingness to adopt salt-tolerant forage as forage source for livestock using a Tobit model. The data used for the empirical analysis has been obtained from a survey of 97 farmers in south-eastern Tunisia. The results of this study show that variables related to age, education level, salinity level of water and membership in a farmers' associations do not significantly influence adoption degree of salt-tolerant forage production. However, a positive relationship between off-farm income availability and adoption is found. Finally, the flock size variable, expressed in Standard Livestock Unit, has a significant and positive relationship with adoption. This indicates the need of farmers to cover their forages deficit.