Sustainable agriculture and ways to achieve it are important issues for agricultural policy. However, the concept of sustainability has yet to be made operational in many agricultural situations, and only a few studies so far have addressed the implementation process of sustainable agriculture....

</titre> <alinea/> In Niger, during the 1980s, management responsibilities of large irrigation systems have been transferred from the State to the peasant organisations. This article aims to analyse the dynamics of the construction of new local management rules and their sustainability. The analysis is based on...