TY JOUR TI The influence of abiotic factors of the Middle Cis-Urals on productivity of perennial legumes KW eastern goat KW bird’s-foot trefoil KW abiotic conditions KW age of the herbage KW hydrothermal coefficient KW yield of dry matter KW yield of seeds KW correlation JO Agrarian Bulletin of the AU Kasatkina, N.I. AU Nelyubina, Z.S. PY 2022 IS 219 PB Ural State Agrarian University