System management of irrigation under climate change conditions for determining the crop water demand and solutions for the water-saving Volodymyr Kovalchuk ( volokovalchuk@gmail.com ) Institute of Water Problems and Land Reclamation of NAAS Mykhailo Yatsiuk Institute of Water Problems and Land Reclamation of NAAS Pavlo Kovalchuk Institute of Water Problems and Land Reclamation of NAAS Hanna Balykhina Institute of Water Problems and Land Reclamation of NAAS Olena Demchuk National University of Water and Environmental Engineering Oleksandr Voitovych Institute of Water Problems and Land Reclamation of NAAS Research Article Keywords: combined irrigation control algorithm, instrumental-calculative method, irrigation rates, system approach to irrigation management, total water balance deｦcit, water-saving irrigation regimes Posted Date: March 22nd, 2023 DOI: https://doi.org/10.21203/rs.3.rs-2703697/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Additional Declarations: No competing interests reported.