TY JOUR TI Improvement of potato cultivation technology in conditions of Middle Urals KW potato KW area of nutrition KW educational-experimental farm KW leaf area KW photosynthetic potential KW harvest KW shirlan KW cost KW profit KW profitability. JO Agrarian Bulletin of the AU Keita, F.. AU Karpuhin, M.Y. PY 2020 IS 201 PB Ural State Agrarian University