The study formed part of a wider research project on the implications of environment and sustainability (E/S) issues for the organization and practice of agricultural extension in three countries in Asia. It focused upon the training of both field staff and rural clients through the development of case studies of course curricula. These provided much positive evidence that some of the curricula did show an increasing responsiveness to E/S issues; with positive moves towards more interactive, learner-centered and experiential learning methods. In several cases curriculum development processes were becoming more participatory and, in some cases, had begun to take account of changing patterns of demand. In some instances, however, participatory approaches were still lacking; there was continuing emphasis on theory rather than practice, and a lack of training needs analysis. The need for a more integrated approach to extension training; one which models Agreener,@ more holistic approaches in both learning systems and training management is advocated.