TY JOUR TI PRODUCTIVITY AND QUALITY OF POTATO TUBERS ON IRRIGATED SOILS DEPENDING ON AGROTECHNIC CULTIVATION WAYS IN THE FOREST-STEPPE OF THE MIDDLE VOLGA KW variety KW depth of planting KW leaf surface KW potatoes KW yield KW quality indicators of tubers. JO Vestnik of Kazan State Agrarian University AU Chekmarev, P.. AU Vladimirov, K.V. AU Kokrov, A.Y. PY 2018 IS 12 PB Kazan state agrarian University