%0 Journal Article %T GRAIN CROPS YIELD MODELS DEPENDING ON THE ORGANIC SUBSTANCE CONTENT IN THE SOIL %A Trubnikov, Y.N. %A Shpedt, A.A. %K yield model, soil, humus, organic matter, fertility. %J Bulletin of KSAU %D 2021 %N 0 %P 5 %I Krasnoyarsk State Agrarian University