%0 Journal Article %T THE CHANGE IN THE HUMUS STATUS OF GREY FOREST SOIL UNDER THE INFLUENCE OF FERTILIZERS %A Butenko, M.S. %A Ulyanova, O.A. %K biohumus, azofoska, agrogrey soil, humus, mobile humus substances %J Bulletin of KSAU %D 2017 %N %P 7 %I Krasnoyarsk State Agrarian University