TY JOUR TI THE EFFICIENCY OF USING LIQUID FRACTION OF LITTERED PORK MANURE UNDER SPRING WHEAT ON MEADOW AND CHERNOZYOM SOIL KW spring wheat KW efficiency KW fertilizers KW ma-nure quality KW soil JO Bulletin of KSAU AU Goman, N.V. AU Bobrenko, I.A. AU Trubina, N.K. AU Shalak, I.O. PY 2018 IS PB Krasnoyarsk State Agrarian University