Biostimulants of growth in the production process of grain crops Inga I. Seregina, Maya Anka, Maxim S. Golovin, Anastasia V. Levchenko and Regina R. Islamgulova BIO Web Conf., 82 (2024) 02014 Published online: 03 January 2024 DOI: 10.1051/bioconf/20248202014