The paper presents the research results from the accumulation of plant residues in in crop rotations per rotation on average for 2010–2015. The consideration of mass left by the roots of plant residues showed that in crop rotations with high saturation of crops and potatoes, the soil receives the least amount of organic matter and hence nutrients. Grain (control) with a one-year crop rotation using clover gives in an average year 3,79 t/ha of correponding residues. I-st crop rotation, due to the replacement of the clover in the potato, has formed 11 % less root-residue than the control rotation. In the II-nd crop rotation and grain-grass-tilled crop rotation accumulation of residues were in the 9–21 % higher than in the controls. This is primarily due, the best development of the roots after manure application and use within two years of sowing clover, which provided the best phytosanitary condition of crops (less root rot damage and contamination) and therefore a higher growth of plants and increase their yields. Mineral fertilizers contribute to a slight increase in biomass correponding residues of crops. The inclusion in the crop rotation of clover had a positive effect on the accumulation of correponding residues in the whole crop rotation. If the content correponding clover residues during the study period is taken as 100 %, then after winter is 84 % correponding residues. The least amount of residues leaves the potatoes. According to our observations, spring cereals leave behind about the same amount of crop residues, but spring wheat and oats in greater numbers, and barley and annual grasses – in the lower.