70982 20190709135534.0 doi 10.1016/j.catena.2017.02.019 sideral 98497 ART-2017-98497 eng García-Garizábal, I. Evaluation of alternatives for flood irrigation and water usage in Spain under Mediterranean climate 2017 Access copy available to the general public Unrestricted Evaluation of water management has been progressively more necessary to determine the availability of water resources, especially in the Mediterranean environment where competition for these resources is maximum. This work evaluates the irrigation management and evolution of hydric needs for the main crops implemented in the Ebro basin (Spain), through the monitoring of a pilot experimental basin between 1998 and 2012. This 15-year period comprehends changes in irrigation implemented by the Irrigation District as well as climate and agronomic variabilities of the region. Changes in water management (implementation of an on-demand irrigation system with annual water allowances and payment per surface and consumption, in opposition to an irrigation system in shifts) and crops contributed to reduce irrigation by 40% and drainage by 72%. This occurred due to better adjustments between the water volumes applied and the hydric needs of the crops, achieving flood irrigation efficiencies of 80%. However, small negative trends were detected in the water deficit evolution of corn and sunflower, which should be addressed and improved. Improvements in water management by farmers have enabled the increase of irrigation efficiency up to values found in pressurized irrigation systems, especially in initial stages of the irrigation campaigns. However, specific water deficit episodes were detected that should be remediated. info:eu-repo/grantAgreement/ES/DGA/GA-LC-016-2012 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.256 2017 GEOSCIENCES, MULTIDISCIPLINARY 39 / 189 = 0.206 2017 Q1 T1 SOIL SCIENCE 7 / 34 = 0.206 2017 Q1 T1 WATER RESOURCES 10 / 90 = 0.111 2017 Q1 T1 1.246 2017 Earth-Surface Processes 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-9165-9710 Causapé, J. Universidad de Zaragoza Merchán, D. 2000 427 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Geodinámica Externa 155 (2017), 127-134 Catena CATENA 0341-8162 564767 http://zaguan.unizar.es/record/70982/files/texto_completo.pdf Postprint 74768 http://zaguan.unizar.es/record/70982/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:70982 articulos driver 2019-07-09-12:03:58 ARTICLE