A significant number of decision support systems (D SS) are available for rural applications. However, many of these have low adoption rates because they have bee n developed with little end-user engagement, limite d ease of use by farmers, and the identified gap in understan ding significant problems between the DSS developer s and the potential end-users in the development process. A useable development environment that prioritises end-user engagement can be expected to reduce the known DSS development difficulties and to improve the develop ment of appropriate decision support tools. To date howe ver few significant attempts have been made to outl ine sophisticated models for a design environment that offers an adaptable and effective solution for end- user DSS development. This paper describes ongoing work in o ntology construction and knowledge elicitation part of the development of an end-user enabled design environme nt (EUEDE). In general the EUEDE will assist rural business stakeholders to build their own target-rel evant decision making tools. We describe in the fir st instance, the ontology for EUEDE that will allow dairy stakeh olders to outline domain-specific decision making s cenarios that will lead to the building of relevant DSS.