Fertilizer circulation and nitrogen balance in the agrophytocenosis of sugar beet when acidizing typical chernozem (study with 15n)A.S. Avilov, N.Ya. Shmyreva, A.A. Zavalin and O.A. SokolovBIO Web Conf., 36 (2021) 03017DOI: https://doi.org/10.1051/bioconf/20213603017