TY JOUR TI THE INFLUENCE OF POTATO PLANTING DENSITY ON productivity, QUALITY OF PRODUCTION AND THE COMMERCIALITY OF TUBERS KW planting density KW potatoes KW tubers KW crop structure KW product quality KW marketability KW starch KW tuber mass KW number of tubers KW weight of leaves KW density of standing. JO Vestnik of Kazan State Agrarian University AU Shashkarov, L.. AU Grigor'ev, Y.M. AU Samarkin, A.. AU Medvedev, V.I. PY 2018 IS 13 PB Kazan state agrarian University