The aim of the study was to identify and evaluate instruments of competition applied by agricultural businesses using the Agricultural Property Resources Of The State Treasury. A survey was conducted among 87 farms located in the province of Warmia and Mazury. The analysis shows that the most important instruments of competition were the price and the quality of the product. The use of instruments related to the quality of the products was often indicated by the owners of very large farms. Among these entities, an important instrument of competition was the price, but as a complement to non-price competitiveness factors.