The article presents the values and objectives of various methods and systems of tillage for growing soybeans after different predecessors. It is established that minimizing the treatment leads to an increase in the density of the treated soil layer and a decrease in the total porosity. The best conditions for the growth and development of soybeans were folded during plowing and chisel treatment at 20–22 cm, where the density and porosity of the soil, depending on its predecessor, ranged from 1,28 to 1,33 g/cm3 and from 49,0 to 50,9 % respectively. With small shallow and surface treatments of the soil, its density was formed within 1,36–1,39 g / cm3 , depending on its predecessor, and the porosity decreased to 46,5–47,8 %. The highest, among the studied treatments, the density of addition (1,38–1,43 g / cm3 ) and the lowest porosity (44,9– 46,9 %) of the soil were in the variant of direct sowing. The highest yield of soybean was obtained after cereal grains (3,5-3,7 t / ha) with 20–22 cm soil cultivated without soil. After corn for grain and sunflower, the highest crop yield is 2,83 and 3,12 t / ha obtained by plowing at 20-22 cm. With timely and high-quality technological processes, the precursor of soybean ensures the yield of soybean plants at the level of 3,33-3,42 t / ha.
addition density, porosity, chernozem typical, soybean yield, tillage