The present study investigates the motivation for adult participation in distance education on sustainability and specializes in a population group with specific characteristics, that of the Agronomists (Higher Education Graduates). In a global community with shifting conditions, environmental problems and geometrically increasing demands regarding the qualifications of workers and especially the scientists dealing with these problems, this issue is considered of major importance while exploring the incentives that lead to participation – after acquiring the first degree – continuing education and learning, and in particular distance education on sustainable development, is essential. The result so that Agronomists feel a strong need to extend their knowledge mainly through distance education.