EN
Productivity and efficiency constitute basic criteria for assessment of economic entities. The paper presents considerations concerning technical efficiency. The considerations were illustrated by empiric research on the basis of data originating from farms rated in “List of 300 best farms” ranking for years 2005 and 2006 (panel). Calculations were performed with the use of non-parametric method of data envelope curve (DEA). Initial data for DEAmodel (effect oriented BCC) adoptsY– for income from sales increased by subsidies, X1 – for area of cropland, X2 – for costs of power and materials, X3 – labour cost with secondary costs of labour and X4 – for amortization. In effect technical efficiency indicator VRS has been obtained together with scale efficiency indicator (SCALE). Highest mean VRS value (0,909) was obtained by purchased objects. Whereas, best results of SCALE indicator (0,979) have been reached by leaseholders, what essentially was to be expected just in that group. Unfortunately, high value of VRS indicator does not always translate to high rentability of sales (ROS).