Factors of biologization of farming in the forest-steppe zone of Volga region Aleksandr Toigildin, Vladimir Morozov, Mikhail Podsevalov, Denis Ayupov, Irina Toigildina and Rezida Mustafina BIO Web Conf., 17 (2020) 00173 Published online: 28 February 2020 DOI: 10.1051/bioconf/20201700173