TY JOUR TI VITALITY AND VARIABLITY OF MORPHOLOGICAL PARAMETERS OF MEDICAGO FALCATA L. AND MEDICAGO × VARIA L. UNDER CONDITIONS OF THE MIDDLE LENA RIVER VALLEY KW Medicago falcata L KW Medicago × varia KW coenopopulations KW variability KW vitality KW variability coeffi-cient KW size range JO Bulletin of KSAU AU Atlasova, L.G. PY 2018 IS PB Krasnoyarsk State Agrarian University