Management of salt mobilisation in the irrigated landscape – A review of selected irrigation regions

Duncan, Ruth; Bethune, Matthew; Thayalakumaran, Thabo; Christen, Evan; McMahon, TA

doi:10.1016/j.jhydrol.2007.12.002

Cited by 46 publications

(32 citation statements)

References 38 publications

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“…The mass of salts exported in 2001 was of the same order as that measured by Causapé et al (2004b) in two other small basins in the same irrigation district (4.7 and 3.4 Mg ha -1 yr -1 ) or in irrigation areas of the USA with lowmoderate IE (approximately 50%; Duncan et al, 2008). Likewise, salt exports were of the same order of those measured by Roman et al (1999) and Therefore the changes in irrigation management produced an increase in drainage salinity but a decrease in the mass of salts exported, in such a way that the salt contamination index decreased approximately by 70%, reaching values of the same order of those presented in modern well-managed irrigated areas.…”

Section: Salinity Produced By Irrigationsupporting

confidence: 58%

“…Serious water and soil salinity problems induced by irrigation have been found in numerous studies (Tedeschi et al, 2001;Causapé et al, 2004b,c;Isidoro et al, 2006;Crosbie et al, 2007;Duncan et al, 2008). The studies based on mass balances in hydrological basins are highlighted, allowing for the quantification of the salts exported in irrigation return flows and the association with physical and agronomic characteristics of the irrigation area studied.…”

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confidence: 99%

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Salinity contamination response to changes in irrigation management. Application of geochemical codes

García-Garizábal¹,

Gimeno

Auqué

et al. 2014

Span. j. agric. res.

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Salinity contamination caused by irrigation has been widely studied but the analysis of geochemical processes regarding agronomic variables has not adequately been considered yet. The research presented here analyzes the influence of changes in irrigation management on salinity contamination, through the use of geochemical modeling techniques, in an agricultural basin during the hydrological year of 2001 and within the period 2005-2008. The results indicate that the changes implemented in irrigation management reduced the masses of salts exported in 72%, although water salinity increased by 25% (this salinity level does not restrict its use for irrigation). The different ionic ratios in drainage water, the results of the salinity balances, and the results of geochemical calculations (mass balances and speciation-solubility) indicate, mainly, precipitation of calcite, dissolution of gypsum and halite and cation exchange. The salt contamination index decreased from approximately 70% to levels close to those presented in modern irrigation areas, indicating that the changes in irrigation management were effective. Petrocalcic genesis and punctual sodification of soils can constitute an agroenvironmental problem that requires adequate management of irrigation and drainage considering future modernization of irrigation areas.

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Section: Salinity Produced By Irrigationsupporting

confidence: 58%

mentioning

confidence: 99%

Salinity contamination response to changes in irrigation management. Application of geochemical codes

García-Garizábal¹,

Gimeno

Auqué

et al. 2014

Span. j. agric. res.

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“…An effective porosity of 5% was considered, which was obtained from pumping tests performed in the piezometers. The effective porosity obtained was within the range provided for the lithology of the aquifer (Custodio and Llamas, 1983). In March, 2008, eight piezometers were installed, and in April, 2010, four additional piezometers were installed, completing the piezometers network.…”

Section: Water Balances In the Irrigable Areasupporting

confidence: 53%

Assessment of a newly implemented irrigated area (Lerma Basin, Spain) over a 10-year period. I: Water balances and irrigation performance

Merchán

Causapé

Abrahão

et al. 2015

Agricultural Water Management

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“…La agricultura de regadío acarrea importantes ventajas, como aumento de la productividad, diversificación de cultivos, estabilidad de cosechas o mantenimiento de la actividad económica en zonas rurales (Duncan et al, 2008). Es por ello que la superficie bajo riego viene aumentando en los últimos años a un ritmo trepidante, especialmente en países en vías de desarrollo donde entre 1962 y 1998 se ha duplicado (FAO, 2003a).…”

Section: Introductionunclassified

Alteración hidrológica del barranco de Lerma (Zaragoza) por la transformación en regadío

Causapé

Merchán

Abrahão

et al. 2013

CIG

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Irrigation expands without a real knowledge of its impacts and dynamics. This work aims to analyze changes in a natural creek’s hydrology as a consequence of receiving irrigation return flows from a newly-irrigated area. To this end, trends and seasonal patterns of flow, electrical conductivity and nitrate concentration were studied in Lerma creek (Zaragoza) from unirrigated conditions (2004) until the new irrigation area was completely transformed (2011). Irrigation resulted in an increase in flow (4.2 L/s year) and nitrate concentration (5.6 mg/L year) values. Although electrical conductivity decreased (-0.4 mS/cm year), the increase in flow resulted in an increase of the mass of salt exported from the area (232 kg/year). Irrigation management and hydro geological conditions produced annual, weekly and daily cycles of the studied variables. The results provided an insight on hydrological changes and their dynamics after implementation of irrigation, which should be taken into account for an adequate water resources management.

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Management of salt mobilisation in the irrigated landscape – A review of selected irrigation regions

Cited by 46 publications

References 38 publications

Salinity contamination response to changes in irrigation management. Application of geochemical codes

Salinity contamination response to changes in irrigation management. Application of geochemical codes

Assessment of a newly implemented irrigated area (Lerma Basin, Spain) over a 10-year period. I: Water balances and irrigation performance

Alteración hidrológica del barranco de Lerma (Zaragoza) por la transformación en regadío

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