An experiment with rotation systems for winter wheat was conducted at the Agricultural Experimental Station of Uhrusk in the years 2003-2006. It was set in the randomized blocks design with four repetitions, on plots of 10 m2. The grey-brown rendzina soil, for¬med from light loam, weak sandy, was classified into the very good rye-type soil utility complex. The experiment concerned four crop rotations with different participation of winter wheat (25, 50, 75 and 100%). Winter wheat cultivation in monoculture decreased the content of total protein in grain, wet gluten and sedimentation value in relation to crop rotations A (25%) and B (50%).