This research aims to conduct a descriptive and econometric
analysis of the costs functions of rain fed barley in the first, second and
third stabilization zones in Al - Hasakah governorate, and to determine
the optimum sizes for production and th
e profit-maximizing size. Data
were collected through a questionnaire for rain fed barley farmers in the
study area for the average season (2015 / 2016-2016 / 2017).
