TY JOUR TI ALFALFA – HIGH-PROTEIN FORAGE CROP KW selection KW alfalfa KW varieties KW hybrids KW grass mixture KW yield of green and dry mass KW protein JO Adaptive Fodder Production AU Lomov, M.V. AU Piskovatsky, Y.M. PY 2021 IS 2021 PB Federal Williams Research Center of Forage Production and Agroecology