88168 20210902121616.0 doi 10.3390/agronomy10020165 sideral 116249 ART-2020-116249 eng Andrés, Raúl Universidad de Zaragoza Water balance and nitrate and salt exports from a saline–sodic irrigation district in Castelflorite (Huesca, NE Spain) 2020 Access copy available to the general public Unrestricted In the current context of climate change, there is growing interest in the optimization of water management in irrigated areas, in semi-arid environments. The design of adequate adaptation and mitigation measures requires specific data at different scales of the water management hierarchy, up to basin level. In this work, the irrigation and drainage system of San Pedro de Castelflorite Irrigation Community (Huesca province, NE Spain), first set up as a flood irrigation system around 1970 and then modernized to sprinkler irrigation around 2008, was studied over two irrigation seasons. The land in this basin, with a surface of 11,450 ha, is affected by severe sodicity problems, which impedes cultivation in large areas. Most of the drainage water discharges into Clamor Vieja ravine, in which the quantity and quality of drainage, using water, salt, and nitrogen balances, were monitored. The water regime was found to be essentially regulated by irrigation. From the water balance, the consumed and the recoverable fractions were estimated at 76% and 23%, respectively, and the depleted beneficial fraction for the irrigated area at 73%. A predominance of salt dissolution processes over precipitation processes was found, with salt exports of approximately 2000 kg·ha−1·year−1. The nitrogen exported by the drainage water was 7 kg N·ha−1·year−1. This value, remarkably lower than those reported for nearby basins in the central Ebro valley, can be attributed to the flooding of rice fields and to the low permeability of the soils present in this basin, which would hamper nitrate washing through the soil profile. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.417 2020 AGRONOMY 16 / 91 = 0.176 2020 Q1 T1 PLANT SCIENCES 57 / 235 = 0.243 2020 Q1 T1 0.706 2020 Agronomy and Crop Science 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Martín Ramos, Pablo Universidad de Zaragoza (orcid)0000-0003-2713-2786 Cuchí, José Antonio Universidad de Zaragoza (orcid)0000-0001-9067-2940 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 5011 500 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Area Ingeniería Agroforestal 10, 2 (2020), 165 [16 pp.] Agronomy AGRONOMY-BASEL 2073-4395 1618345 http://zaguan.unizar.es/record/88168/files/texto_completo.pdf Versión publicada 469751 http://zaguan.unizar.es/record/88168/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:88168 articulos driver 2021-09-02-08:44:23 ARTICLE