research program were described in Chapters I, II and III. From these, a prioritized list of problems and promising new technology options will have been identified. The on-farm research team will have participated in those stages, and, in cooperation with commodity and discipline program leaders and station directors, can develop a work plan or research protocol in each research region. It may be useful to include specialists from other institutions in the analysis and planning sessions to broaden the overall viewpoint. The protocol should spell out in as much detail as possible the purpose and objectives of each regional on-farm research subprogram; the number and kinds of trials, experiments, or tests to be carried out; the methods and analyses to be used; the equipment, materials, and human and financial resources required; and the persons, commodity and disciplinary teams, or other services cooperating in the execution of the regional program and their contribution. As a regional program continues over several years, the size and composition of the core team and the mix of needed back-stopping services will change. Initially, the geographical area for which the team is responsible should be kept small. The level of effort will be comparatively greater in the first years, as data needed to understand socioeconomic, biological, and technical problems are collected and analyzed. However, as the initial on-farm trials are completed and agro-climatic parameters and recommendation domains are refined and described, it may then be possible to increase the size of the area or reduce the size of the core team. Each member of the team can be given responsibility for all research trials and farm records for a given set of farms even when these cut across several specialties. As noted, support and guidance can be provided by station- based specialists or more senior team members on a periodic basis. This method provides a built-in mechanism to improve the technical knowledge and research capability of each team member and, most importantly, the understanding of the farm as part of a complex biological and management system. The feedback of information to traditional research and academic institutions contributes to the orientation of basic research as well. Alternatively, depending on the size and complexity of the region, work may be divided within the team in part along