%0 Journal Article %T Optimization of the content of easily hydrolyzable nitrogen in the cultivation of narrow-leaved lupine on unproductive lands %A Shevchenko, V.A. %A Popova, N.P. %A Bondareva, G.I. %A Solovyev, A.M. %K fertilizer system, liquid effluents, solid fraction of manure, minimal tillage, dump plowing, sod-podzolic light loamy soils, nitrogen balance and fixation %J INTERNATIONAL AGRICULTURAL JOURNAL %D 2026 %N %P 4 %I Electronic science