%0 Journal Article %T THE PRODUCTIVITY OF SPRING WHEAT DEPENDING ON WAYS OF BASIC SOIL CULTIVATION AND FERTILIZERS %A Bakaeva, N.P. %A Saltykova, O.L. %K wheat, yield, protein, fertilizers, agricultural technology, efficiency %J Bulletin Samara State Agricultural Academy %D 2019 %N 4 %P 6 %I Samara State Agricultural Academy