TY JOUR TI METHODOLOGY FOR DETERMINING OPTIMAL PARAMETERS OF STATIONARY SPRINKLER IRRIGATION SYSTEMS KW stationary sprinkler irrigation system KW parameter optimization KW hydraulic calculation KW EPANET KW IoT-based irrigation KW variable rate irrigation KW digital twin JO INTERNATIONAL AGRICULTURAL JOURNAL AU Ryazantsev, A.I. AU Antipov, A.O. AU Evseev, E.Y. AU Mal'ko, I.V. PY 2026 IS 9 PB Electronic science