Implementation of the ecological principle of organic farming in the forest-steppe zone of the Middle Volga regionNatalya P. Bakaeva, Olga L. Saltykova, Larisa V. Zaprometova and Maksim S. PrikazchikovE3S Web of Conf., 390 (2023) 07029DOI: https://doi.org/10.1051/e3sconf/202339007029