%0 Journal Article %T EFFICIENCY OF PHOSPHOGYPSUM IN AGROCENOSIS OF SPRING BARLEY %A Trots, N.M. %A Borovkova, N.V. %A Solovyov, A.A. %K phosphogypsum, alkalinity, melioration, economic evaluation %J Bulletin Samara State Agricultural Academy %D 2023 %N 7 %P 8 %I Samara State Agrarian University