Abstract
One of the promising directions for the development of crop production under present-day conditions is the im-provement of agricultural technologies of crop cultivation. Sowing is the most important technological operation; its quality largely determines the achievement of high yields. In this regard, the type of the seeding working body and the operating modes ofthe machine-tractor unitssignificantly affect the energy and agrotechnical characteristics of the sowing. As a result, it becomes necessary to substantiate the zonal parameters and operating modes of the sowing units taking into account the agronomic, technical and eco-nomic indices. The experiment was carried out on the farm of the OOO KKh “Zaytsev” in the Tyumentsevskiy District of the Altai Region. Based on the implementation of the field experiment using the planning of the experiment, a quantitative assessment of the effect of the speed opera-tional modes of the John Deere 730 and John Deere 1890 seeding units on the quality of spring wheat sowing, soil water regime and the yield was obtained. Each unit operat-ed at 4 levels of travel speeds. As a result, a technical and economic assessment of the compared sowing options was given. The results obtained will serve as the basis for substantiating the parameters and operating modes of the sowing units under operating conditions.
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