TY JOUR TI CHANGE IN THE POTENTIAL AND EFFECTIVE FERTILITY INDICATORS OF THE AGROGREY SOIL UNDER THE FERTILIZER INFLUENCE KW agrogrey soil KW fertility KW organic waste KW biohumus KW azophoska JO Bulletin of KSAU AU Ulyanova, O.A. AU Butenko, M.S. AU Petrova, E.V. PY 2014 IS PB Krasnoyarsk State Agrarian University