Balance of humus and nutrients in the meadow-chernozem soil of the rice ecosystem A.Kh. Sheudzhen, O.A. Gutorova, H.D. Hurum and Yu.N. Ashinov BIO Web Conf., 103 (2024) 00006 Published online: 17 April 2024 DOI: 10.1051/bioconf/202410300006