The discreteness of action and lacking the interaction between sub-systems of research and extension as well as lacking the relationship with the education sub-systems and farmers are -critical issues for achieving a sustainable evolution in the agricultural system. It is because the aforementioned components are the core of agricultural innovation as well as Agricultural Knowledge and Information Systems. For this reason, solutions to strengthen the linkage between the main actors of the AKISs have been increasingly sought and are being embedded into national and international policy. This study investigates the conditions, action strategies and consequences of strengthening the linkage between actors the AKIS. Eight main areas for the strengthening of the linkage between the actors of the AKISs were identified from a Grounded Theory Analysis of the literature. "Proper Social Capital" as an intervening factor and "Capacity Building in Human Resources" found to be the casual condition influencing the strengthening of the linkage between the actors of the AKISs. The identified contextual factors in this area are "Infrastructure and Enabling Environments" and "Active Actors". "Flexible and Efficient Structure," "Continuous Monitoring and Evaluation", and "Transparent Vision and Mission," as the action strategies for strengthening the linkage between the actors of the AKISs were identified. Finally, the consequence of strengthening linkage was "socio-economic achievements synergistic."
