The assessment of the efficiency of the plant growth regulator “Cresolan” on grain cropsS.A. Ermakov, A.V. Mankov, L.A. Minukhin, Yu.R. Muratov and A.E. CoparulinaE3S Web of Conf., 222 (2020) 02049DOI: https://doi.org/10.1051/e3sconf/202022202049