At a choice of an optimum way of machining of soil each land owner pursues one main aim – creation an optimum arable layer for cultivation of crops. Cultivation of soil finds the display in three systems: moldboard tillage, moldboardless tillage and no-till. The ad- vantages and shortcomings are inherent in each system. The right choice will provide preservation and improvement of physical and chemi- cal properties and increase of fertility of soil, and it is one of the most important problems in the production of agricultural crops. The pur- pose of researches is improvement of quality of mechanical cultivation of soil, decrease in power expenses as a result of use of the boardless- subsoiler implement which can carry out at the same time two operations: loosening of surface layer of soil and decompaction of its lower layer. Scientists of university developed and patented soil-cultivating working body which carries out the moldboardless tillage of upper layer with a simultaneous decompaction of the lower layer by means of subsoiler. The offered boardless-subsoiler implement by loosening the top layer of soil and decompaction of the lower horizon, allows to keep crop residues on a surface of a tilled field and to loosen the lower layers of soil, providing the necessary water-air regime. Mechanical cultivation of the soil this boardless-subsoiler implement respond to criteria of quality of soil cultivation. Extent of crushing of the soil is lie in limits of necessary value, the sizes of structural units of the soil is 8-10mm. Forming of a necessary equilibrium condition of the soil on a depth of cultivation supports good germination of a root system and to increase in productivity of the grown-up cultures. Such processing most meets the agrotechnical requirements at growing crops such as sunflower, corn, sugar beet. The offered way of soil cultivation provides fuel savings of up to 10 kg per hectare due to reduction of number of operations. The energy intensity of technology process decreases to 50% due to reduction of number of technology operations for the prepa- ration of the soil.