While Suphannachart and Warr (2010) also supported both economic and noneconomic factors as well as agricultural research in determining total factor productivity in short- and long-run. The lag explanatory and dependent variables are initiated as they allow the current impact on total factor productivity form these factors in previous periods. The error correction model (ECM) was employed to find out the correlation between them. The results from the study were similar to Patmasiriwat and Suewattana (2010)’s study that real public agricultural expenditure for research and extension played the major role for productivity, following international agricultural research spillovers, infrastructure, economic and social situation such as trade openness and resource allocation, and climate factor.