Application of enzymatic hydrolyzate of chitosan as a plant growth promoter Miroslava Kotlyar, Diana Ibatullina, Maria Zinov’eva, Ksenia Shnaider and Sania Zaripova E3S Web of Conf., 443 (2023) 01002 Published online: 09 November 2023 DOI: 10.1051/e3sconf/202344301002