Abstract
The article presents the results of research (2013, 2015 years) study the effectiveness application doses of fertilizers, calculated by species genotype ratio (SGR) elements of soybean nutrition, that was grown on acid (рНsaline 4,6) gray forest soil of Right-Bank Forest-Steppe. Adding of N60P12K15Ca15Mg3 with simultaneous seed inoculation by a preparation Bradyrhizobium japonicum 634b + polishtam Bacillus subtilis provide the highest level of nodula tion (37,8 nodules on the roots of plant) and maximum seed yield, which exceeds optimized by SGR dose of fertilizer (N60P12K15) on 0,93 t/ha, and conventional N60P60K60 – on 1,84 t/ha. In these conditions recoupment 1 kg NPKCaMg is 20,6 kg of soybean seeds, that exceeds the conventional dose of fertilization in 7,1 times, N60P12K15 – in 1,5 times. At the same time conventionally net profit amounts 15160 UAH/ha, and recoupment of one hryvnia costs – 7,15 UAH.
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