In this research which was carried out at the experimental field of Agronomy Department of Agricultural Faculty on Ankara University, on the growing season of 1999-2000, hairy vetch (Vicia villosa L.) line of L-626, narbonne vetch (Vicia narbonensis L.) line of L-1025 and barley (Hordeum vulgare L.) cultivar Tokak 157/37 were used as materials. In the research, two vetch species were grown as monocropping and at different mixture rates with barley. All of those mixture rates were; 1) 100% monocropped hairy vetch, 2) 80% hairy vetch+20% barley, 3) 60% hairy vetch+40% barley, 4) 40% hairy vetch+60% barley, 5) 20% hairy vetch+80% barley, 6) 100% monocropped barley, 7) 100% monocropped narbonne vetch, 8) 80% narbonne vetch+20% barley, 9) 60% narbonne vetch+40% barley, 10) 40% narbonne vetch+60% barley, 11) 20% narbonne vetch+80% barley. The plots where different mixture rates were placed on were harvested when the barley was on milk stage for silage and plants were wilted, chopped and filled into 2 liters of jars without having any air. Some forage samples were dried under the sun after harvesting. Some physical observations, dry matter and pH measurements were done on silage samples and flieg scores were calculated after 25 days. Apart then, on the samples of hay and silage, crude protein contents were calculated by the means of dry matter. At the result, the most quality silages were obtained from the mixtures which have more barley ratio than others on monocropped hairy vetch and narbonne vetch and their mixtures with barley. However, according to the all physical observations and flieg scores, the best, good and medium quality silages were obtained from vetch+barley mixtures and their monocrops except monocropped hairy vetch and the mixture of 80% hairy vetch + 20% barley. Another result of this research when the comparison of crude protein contents, narbonne vetch+barley mixtures gave the more positive results in terms of ensiling them then making hay.