Choice, together with the process of making that choice, is a critical issue in agricultural extension education. This calls for an understanding of farmers’ decision-making processes by agricultural extension staff which can help them to work more effectively with their clientele, as individuals and in groups. The purpose of this study was to determine the decisions on maize storage options made by farmers in the Volta Region of Ghana using a decision tree approach. The results indicated that the use of the decision tree is situation-specific, and is more effective with individual farmers than with groups. However, it is useful in group situations for creating problem awareness, and generating discussions among group members to bring out diverse views on recommended practices and options.