%0 Journal Article %T EFFICIENCY OF PHOSPHOGYPSUM APPLICATION ON SOD-PODZOLIC SOIL IN CROP ROTATION WITH POTATOES %A Fedotova, L.S. %A Akanova, N.I. %A Kosodurov, K.S. %K phosphogypsum, potatoes, barley, quality, phosphorus, acidity, fertility %J Bulletin Samara State Agricultural Academy %D 2019 %N 4 %P 9 %I Samara State Agrarian University