%0 Journal Article %T EFFICIENCY OF FERTILIZER APPLICATION WAY AT CULTIVATION OF MIDDLE-EARLY MATURING POTATO VARIETIES ON GRAY FOREST SOILS OF FOREST-STEPPE ZONE OF MIDDLE VOLGA %A Gaynutdinov, M.. %A Vladimirov, V.P. %A Chekmarev, P.. %K fertilization method, fertilizer background, potatoes, yield, variety, content of starch, solid matter, nitrates, protein. %J Vestnik of Kazan State Agrarian University %D 2014 %N 9 %P 4 %I Kazan state agrarian University