@article{yskak_nugmanov_chashkov_paramonova_shcheglov_nurushev_tulkubayeva_tulayev_somova_irzhanov_et al._2026,  title={Assessment of humus and nitrate content in soils and dynamics of their changes in the conditions of agricultural work in Kostanay region},  volume={86},  ISSN={1519-6984},  url={https://doi.org/10.1590/1519-6984.305242},  DOI={10.1590/1519-6984.305242},  journal={Brazilian Journal of Biology},  publisher={Instituto Internacional de Ecologia},  author={Yskak, A. and Nugmanov, A. and Chashkov, V. and Paramonova, T. and Shcheglov, A. and Nurushev, M. and Tulkubayeva, S. and Tulayev, Y. and Somova, S. and Irzhanov, Z. and Bashev, A.},  year={2026},  pages={e305242} }