TY JOUR TI INFLUENCE OF FODDER CROP ROTATIONS ON CROP CONFERENCE AND PRODUCTIVITY OF AGRICULTURAL CROPS IN BAIKAL REGION KW crop rotations KW forage crops KW weediness KW predecessors KW productivity KW protein JO Vestnik of Kazan State Agrarian University AU Kozlova, Z.V. AU Matais, L.N. AU Glushkova, O.A. PY 2020 IS 15 PB Kazan state agrarian University