TY JOUR TI QUALITY OF HERBAL RAW MATERIALS AND NUTRIENT REMOVAL IN LONG-TERM MID-RIPENING THREE-CUT CEREAL STANDS KW mid-season agrocenoses KW cereal grasses KW three mowing KW longevity KW nutrient removal KW quality of grass raw materials JO Adaptive Fodder Production AU Zhezmer, N.V. PY 2020 IS 2020 PB Federal Williams Research Center of Forage Production and Agroecology