The calculation basis for a four-component jet mixer for fertilizer and water Sergey Andreyevich Tarasyants, Vladimir Alexandrovich Rudakov, Yulia Sergeyevna Urzhumova and Karina Alexandrovna Degtiareva E3S Web Conf., 262 (2021) 01035 Published online: 24 May 2021 DOI: 10.1051/e3sconf/202126201035