%0 Conference Article %T EFFICIENCY OF ANTHROPOGENIC ENERGY COSTS IN THE CREATION AND LONG-TERM USE OF DIFFERENT-RIPENING CEREAL HAYFIELDS %A Zhezmer, N.V. %K cereal hayfields, different-ripening grass stands, longevity, metabolic energy, natural factor, agro-energy efficiency %J Multifunctional adaptive fodder production 26 (74) %D 2021 %P 5 %I Federal Williams Research Center of Forage Production and Agroecology