Biological effectiveness of polyfunctional biopreparations in soft wheat cultivation and assessment of crop quality based on NDVI indexIrina I. Novikova, Elza V. Popova, Leonid E. Kolesnikov, Nikolay S. Priyatkin and Yulia R. KolesnikovaBIO Web Conf., 18 (2020) 00021DOI: https://doi.org/10.1051/bioconf/20201800021