%0 Journal Article %T The effect of biological preparations on the indicators of biological activity of typical slightly eroded chernozem %A Chuyan, N.A. %A Breskina, G.M. %K biopreparations, nitrogen fertilizers, by-products, C–CO2 production, cellulosolytic activity, soybean, fodder beans %J Agrarian Bulletin of the %D 2022 %N 220 %P 11 %I Ural State Agrarian University