It was found that an inefficient monitoring system, inefficient extension plans and policies, inefficient exchange agents and small holders are the main causes of this constraint. In inefficient monitoring system, it was found that there are deficient exchange agents due to the exchange agents having various activities in the local area. In inefficient plans and policies concerning extension, it was found that the deficient participation and coordination between small holders and exchange agents, and no feasibility studies are the main causes of this constraint. In inefficient change agent and small holders, it was found that both small holders and exchange agents are not fulfilling their responsibility. Small holders are, normally, not confident in the local extension system