%0 Journal Article %T PRODUCTIVITY AND QUALITY OF MEDIUM-RIPED POTATO TUBERS DEPENDING ON THE DOSES OF PHOSPHOROUS FERTILIZERS ON THE GRAY FOREST SOIL OF FOREST-STEPPE OF THE MIDDLE VOLGA REGION %A Vladimirov, V.P. %A Egorov, L.M. %A Artamonov, S.G. %K microelements, phosphorus, mineral fertilizers, productivity, potatoes, vitamin C, starch, protein, nitrates %J Vestnik of Kazan State Agrarian University %D 2019 %N 14 %P 5 %I Kazan state agrarian University