Analyzing The Trend And Nature Of Technological Change In Sugar Beet Production In Iran

In this study the trend of technological change and its nature was studied in production of sugar beet in Iran by using dual approach. This approach is useful for estimating the demand structure of the input price change and technology status. After estimating the various forms of flexible functions، by selection of Translog cost function with cost share equations system is estimated using seemingly unrelated regressions for the period of 1368-88. The rate of manufacturing cost in sugar beet farms has decreased over time. In addition، technological change is machinery- using and land، labor and fertilizer-