TY CONF TI QUALITY OF HERBAL RAW MATERIALS FOR THE PREPARATION OF HAY IN IMPROVED ALFALFA-CEREALS GRASS STANDS IN DYNAMICS BY MOWING AND YEARS USING KW alfalfa-cereals hayfields KW zoned varieties KW biological nitrogen KW crude protein KW crude fiber KW metabolic energy KW feed units KW digestible protein JO Multifunctional adaptive fodder production 30(78) AU Kutuzova, A.A. AU Provornaya, E.E. PY 2023 PB Federal Williams Research Center of Forage Production and Agroecology