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The paper discusses the process of sowing row crops (the formation of a ridge above the seeds and rolling ridges) in laboratory conditions. Taking account of the agrotechnical requirements and physical and mechanical properties of the soil, the reference profile of the soil ridge as well as the original optimization criterion have been adopted. This ridge is formed during sowing, which conditionally can be recognized as ideal. After studying the process of sowing in the tillage bin and statistical processing of the obtained data, the corresponding equations were deduced in which the independent process factors were expressed in natural and in encoded values.

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