Abstract: The article presents the results of studies of the effects of movers of agricultural tractors and machinery on the soil. To identify the multiplicity of passes of tractors and aggregates, special experience was laid down on the degree of compaction of the soil and the productivity of cotton. The degree of compaction of the soil was studied at 1, -3, -5, - and 8-fold passes through the field. The main characteristics of tractor propulsion are given. A structural diagram of the ways, methods and factors of reducing the compaction effect of the running systems of machines on the soil is presented. In order to reduce the area of field compaction, a study is made of the kinematics of motion of machine-tractor units. To speed up the calculations, a special logarithmic nomogram was constructed with a 45-degree course of the solution beam. Key words: aggregate, soil compaction, plowing, soil density, cultivation, harrowing, sowing, tractor, traction, two-tier plow, agriculture.