TY JOUR TI FLAXSIBILITY OF POTATO VARIETIES IN THE URALS STEPPE ZONE KW potatoes KW variety KW productivity KW ecological KW flexibility KW stability JO Bulletin Samara State Agricultural Academy AU Mushinskiy, A.A. AU Aminova, E.V. AU Gerasimova, E.V. PY 2016 IS 1 PB Samara State Agrarian University