The Directive of the European Parliament and of the Council 2009/128/CE establishing a framework for Community action to achieve the sustainable use of pesticides in Annex III “General principles of integrated pest management” emphasizes the use of all possible methods which reduce populations of pests to the level of harmlessness. One of the relatively cheap and easy methods to prolong the genetic resistance of modern varieties is their cultivation in different types of mixtures and in complex interbred populations according to the concept of evolutionary plant cultivation. A three-year field experiment was carried out in two locations to assess the suitability of five winter triticale varieties (Elpaso, Mikado, Tomko, Pigmej and Borowik) for constructing crop mixtures (10 two-component mixtures and 10 three-component mixtures). The suitability of varieties for creating crop mixtures was analysed through the comparison of real and expected yields of mixtures. Coefficients of variation for the yields of variety monocultures ranged from 1.24 % (for Borowik in Bąkow ´ 2014) to 37.51 % (for Borowik in Winna Gora ´ 2016). Yield stability for two-component mixtures expressed as CV was from 2.39 % (for Tomko/Borowik in Winna Gora ´ 2015) to 36.16 % (forMikado/Tomko in Winna Gora ´ 2016), and for threecomponent mixtures from 2.89 % (for Elpaso/Tomko/Borowik in Winna Gora ´ 2015) to 34.43 % (for Elpaso/ Mikado/Borowik in Bąkow ´ 2016). Overall, the highest variability of the coefficients of variation was found for variety monocultures (75.91 %), lower for three-co0mponent mixtures (67.67 %) and the lowest for twocomponent mixtures (66.52 %). The study demonstrated that the Elpaso and Mikado varieties were most suitable for composing high-yielding mixtures; when grown in monocultures theiryield was not the highest, but they caused a significant increase in the yield of mixtures (the highest in four out of six locations).