TY CONF TI Economic efficiency of long-term multi-mowing use of different-ripening grass stands for haylage harvesting KW different-ripening grass stands KW three mowing KW capital investment KW annual production costs KW feed cost KW profitability of production JO Multifunctional adaptive fodder production AU Zhezmer, N.V. PY 2025 PB Federal Williams Research Center of Forage Production and Agroecology