The paper considers the formation process of secondary soil ridges by working bodies with flat discs during the first mechanized interrow cultivation of crops in laboratory conditions. Taking account of the agrotechnical requirements and the physical and mechanical properties of the soil, we adopted the reference profile of the soil ridge formed during mechanized inter-row cultivation of crops, which can conditionally be accepted as ideal, as well as the original optimization criterion kсэ1 .

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... ter practical implementation of studies in the tillage bin and statistical processing of the obtained data, the corresponding equations were obtained in which the independent process factors were expressed in natural and encoded values. It was found that a change in the speed of a cultivator within 1.2 2.4 m / s, with angles of attack>кk of flat discs from 5º to 20º, increases the distance at which the soil is thrown off and the thickness of the soil layers covering the sides and the upper base of the primary ridge (kсэ1 → max). At angles of attack>кk of flat discs within the limits of 25º ... 30º and the speed of the cultivator from 1.2 m / s to 1.6 m / s, an increase in the thickness of the covered soil layers hпр, occurs, and the coefficient kсэ1 is maximum ((kсэ1 = 0.98 with a flat disc diameter of 0.3 m).