The optimum combination of elements of agrotechnology of lupine cultivation for grain has been established, which contributes to obtaining the maximum grain yield of 4.82 t/ha and to entering into the soil up to 9 t/ha of dry mass of plant residues. At their mineralization more than 1.6 t/ha of freshly formed humus and more than 80 kg/ha of nitrogen return to the arable layer
narrow-leaved lupine, yield, elements of agrotechnology, mass of root residues, Non-Chernozem zone
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