Three study decades on irrigation performance and salt concentrations and loads in the irrigation return flows of La Violada irrigation district (Spain)

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dc.contributor.authorBarros García, Rocío
dc.contributor.authorIsidoro Ramírez, Daniel
dc.contributor.authorAragüés Lafarga, Ramón
dc.date.accessioned2012-11-16T09:01:45Z
dc.date.available2012-11-16T09:01:45Z
dc.date.issued2012
dc.description.abstractIrrigationdistrictsalt balances identify the main sources and sinks of salts and quantify saltloads in irrigationreturnflows. Salt balances were performed in LaVioladaIrrigationDistrict during the 80s (1982–1984), 90s (1995–1998) and 00s (2006–2008) decades. Total Dissolved Solids (TDS) and loads in irrigationreturnflows were related with changes in irrigationperformance and infrastructures during these decades. TDS increased linearly to increases in Irrigation Consumptive Use Coefficient (ICUC) (P < 0.01), and decreased with increases in Drainage Fraction (DRF) (P < 0.001). The salt balances revealed that 82% of the exported salts originated from soil gypsum dissolution. Annual salt yields in returnflows were high and similar in the 80s and 90s (about 19.3 Mg/ha year), and halved in the 00s (9.9 Mg/ha year) due to comparable reductions in irrigation and drainage volumes derived from a better irrigationperformance. Irrigation season salt yields were high and steady around 14.1 Mg/ha for ICUC < 51% and DRF > 66%, and decreased exponentially for values above and below these thresholds, respectively. Therefore, the key management strategy to reduce salt discharge to downstream areas is to decrease drainage volumes by improving irrigation management.es_ES
dc.description.versionPeer Reviewed
dc.identifier.citationBarros, R., D. Isidoro, and R. Aragüés. “Three Study Decades on Irrigation Performance and Salt Concentrations and Loads in the Irrigation Return Flows of La Violada Irrigation District (Spain).” Agriculture, Ecosystems & Environment (2012), vol 151, p. 44–52
dc.identifier.urihttp://hdl.handle.net/10532/2058
dc.language.isoenes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.agee.2012.02.003
dc.subjectIrrigationes_ES
dc.subjectSalt balancees_ES
dc.subjectDiffuse salt pollutiones_ES
dc.subjectDrainage fractiones_ES
dc.subjectSoil gypsumes_ES
dc.subjectWater qualityes_ES
dc.subject.otherRiego
dc.subject.otherRendimiento
dc.subject.otherPolución difusa
dc.subject.otherSalinidad del suelo
dc.subject.otherCalidad del agua
dc.subject.otherAragón
dc.subject.otherSuelos y riegoses_ES
dc.titleThree study decades on irrigation performance and salt concentrations and loads in the irrigation return flows of La Violada irrigation district (Spain)es_ES
dc.typeArticlees_ES

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