Oilseed flax and alfalfa as sources of nutrient elements in the Central region of non-chernozem zone of RussiaAlexander Simagin, Nikolay Barsukov, Sayera Zakharova and Anastasia SimaginaBIO Web Conf., 82 (2024) 02010DOI: https://doi.org/10.1051/bioconf/20248202010