While elaborate in its administrative structure, the AEST is however elementary in its conceptual nature and suffers from a number of limitations and constraints that are inherent to the nature of the agricultural activity itself, namely rainfall dependence, marketing channels functioning and power, the scattered nature of farms and their limited size; all negatively affecting its expected profitability and therefore its economic viability. Consequently, the derived demand for extension service is limited, localized, restrained and mostly public incentive induced.