EN
The aim of the article was to determine the technical and scale efficiency of three groups of farms using data envelopment analysis. The empirical data were provided by a panel. In each of the examined groups the technical efficiency ratios deteriorated in the 2005-2007 period. The same situation was recorded also in the case of the scale efficiency (with the exception of single-person-Treasury-owned companies which had better results than the leased and purchased units).