Substantiation of the helicoid fertilizer dispenser parameters Denis S. Kalugin, Egor V. Kulaev, Lyubov I. Vysochkina and Mikhail V. Danilov E3S Web Conf., 395 (2023) 01003 Published online: 06 June 2023 DOI: 10.1051/e3sconf/202339501003