抄録
The purpose of this paper was to measure the technical efficiency of wheat in Japan using stochastic frontier analysis of samples from different prefectures during the period between 1987 and 2008, and to investigatewhether the technical efficiency of Japan’s wheat production from these different regions converges.
We found that the technical efficiency of wheat in Japan showed a tendency to decrease.
Three kinds of panel unit root tests implied that technical efficiency tended to converge in each region.
