TY JOUR TI ASSESSMENT OF YIELD AND ADAPTIVE POTENTIAL OF PEA VARIETIES IN THE CONDITIONS OF THE SOUTHERN FOREST STEPPE OF THE NORTHERN URALS KW peas (Pisum sativum L.) KW cultivar KW yield KW yield range KW ecological adaptability JO Vestnik of Kazan State Agrarian University AU Sapega, V.A. AU Mitrikovskiy, A.Y. PY 2020 IS 15 PB Kazan state agrarian University