The field experiments was carried out on good wheat soil complex during 2003-2005 in Podkarpacie region (5003? N, 2206? E). The 2-species mixtures of naked oats Polar with cultivars of faba bean Akord - its growth pattern undefined, Albus - with low tanine content and self-completing, Titus - self-completing were not distinguishable as regards grain yield as they in most cases gave yields higher than faba bean in pure sowing and even in years with highest rainfall, it gave higher yields than oats in pure sowing. While crude protein yields of mixtures were higher than oats in pure sowing but lower than faba bean, the energy value of yields were however higher in comparison with sole-species cultivations. The content of faba bean grains damaged by Bruchus rufimanus Boh. in mixtures with naked oats did not differ significantly from those in pure sowing. The traditional Akord cultivar was characterized with less stability of yields during the period covered but its grains were infected by Bruchus rufimanus Boh. than self-completing cultivars. Having in mind prevailing conditions of Podkarpacie, it is recommended that Albus cultivar be added to mixtures with naked oats, Polar variety due to very high grain and protein yields as well as energy value of yields.
