Vegetable Productivity Analysis Using Data Envelopment Analysis

Abstract

This research is to measure the total factor productivity (TFP) of Japanese main vegetables and is to converge in each prefecture. The Malmquist index approach was applied for the calculation of TFP growth using one output (production) and four inputs (land, labor, capital, and other materials) for the period 1972–2007. The result of the Malmquist productivity index of vegetable decreased over this period by 2%, taking a value of 0.98. As technical efficiency was 1.00, and a technical change was 0.98, the factor that caused the decrease in productivity was technological change. The panel unit root test got a result to certainly converge in vegetables that was the highest in the productivity. Moreover, Growth of the productivity advance to the equivalence direction as a tendency, and the productivity of vegetables suggests that the same farm policy is effective.