The feasibility study "Strategies and Tactics for Agriculture Reconstruction and Transformation" was planned to investigate the possibility of a new future agricultural project at IIASA. In order to specify possible options for research in this field and to discuss the NMOS' proposals, a seminar on sustainable agriculture was held in Sopron, Hungary, 2-5 March 1987. In this paper the authors summarize the preliminary findings of the feasibility study, including also ideas raised and discussed during the seminar. A more detailed description of these findings will be available in the Proceedings of the seminar to be published later in 1987