Nitrate Accumulation and Other Components of the Groundwater in Relation to Cropping System in an Aquifer in Southwestern Spain

Vázquez, Julián; Grande, J. A.; Barragán, Francisco José; Ocaña, Juan A.; Torre, M. L. de la

doi:10.1007/s11269-005-0129-y

Cited by 21 publications

(8 citation statements)

References 13 publications

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“…Also, inappropriate farming techniques and crop types (e.g. potatoes) have a significant contribution to nitrate pollution and salinization (González Vázquez et al 2005). Approximately 20% of irrigated land is moderately or severely affected by salinization (Douaoui & Hartani 2007).…”

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confidence: 99%

Effects of irrigated agriculture on water and soil quality (case perimeter Guelma, Algeria)

Kachi¹,

Kachi²,

Bousnoubra³

2016

Soil Water Res.

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Kachi N., Kachi S., Bousnoubra H. (2016): Effects of irrigated agriculture on water and soil quality (case perimeter Guelma, Algeria). Soil & Water Res., 11: 97-104.In Algeria, more than 20% of irrigated soils are concerned by the problem of salinity. In the perimeter of Guelma, the results showed that the soils have low salinity despite of high electrical conductivity (1244 µS/cm) of irrigation water and increased organic matter, nitrogen, potassium, and phosphorus contents. It should be noted that the soils had exhibited higher salinity and low organic matter content before starting the irrigation in 1973. The reduction in the salt content is due to the leaching of salts from percolated water after the intensive irrigation; however, the increase in the content of organic matter can be explained by the accumulation of the organic matter transported by irrigation water, conditions of waterlogging, and types of crops (vegetable/cereals). As to the quality of groundwater, nitrate is the dominant nitrogen component entering groundwater and it is very alarming that by 45% of water sources (springs, wells, and boreholes) the nitrate contents are over 50 mg/l. It is a serious problem because it serves as a drinking water supply for the local population. Moreover, this water is highly mineralized (electric conductivity > 1000 µS/cm) because of the intensive use of artificial fertilizers and to the poor quality of water irrigation. The contamination by organochlorine pesticides is below the value admitted by the WHO for water resources. Endosulfan is the most dominant active ingredient with an average concentration of 0.066 µg/l.

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confidence: 99%

Effects of irrigated agriculture on water and soil quality (case perimeter Guelma, Algeria)

Kachi¹,

Kachi²,

Bousnoubra³

2016

Soil Water Res.

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“…A common practice for managing water scarcity is the alternative of irrigation using treated/undertreated wastewater. This practice has brought significant benefits in terms of increasing availability of good quality water to high priority, meeting agricultural water resulted in important levels of nitrates in groundwater [35]- [39]. Even if wastewater is generally low in nitrate, it contains significant levels of ammonium compounds that convert via nitrification process into nitrate, which later leach into groundwater.…”

Section: Study Areamentioning

confidence: 99%

Land-Use Impact and Nitrate Analysis to Validate DRASTIC Vulnerability Maps Using a GIS Platform of Pablillo River Basin, Linares, N.L., Mexico

Pórcel¹,

Schüth²,

León-Gómez³

et al. 2014

IJG

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Preventive management of groundwater resources and their protection against pollution is one of the major challenges of our society. Groundwater systems are related with the surficial processes like territorial administration that is one of the most important tasks into the human development, because it involves serious problems to define the spatial medium, the industrial site-selection and the land-use allocation. Land-use and anthropogenic distribution could be the origin of the emission of pollutants that constitutes a serious health risk in urban areas. Nitrate was used as a pollution indicator in the Pablillo River Basin (PRB), to know the evolution of groundwater quality between 1981 and 2009 using GIS platform linked to vulnerability maps of DRASTIC (Depth to the water table; net groundwater Recharge; Aquifer type; Soil type; Topography; Impact of the vadose zone and hydraulic Conductivity of the saturated zone). The study area is centered on the Linares city; changes in aquifer vulnerability were assessed over time on two stages (2007 and 2001). In both cases, depth from surface to groundwater plays an important role by being the most dynamic variable over time. This study shows that the depth of water table is the key factor in the evaluation of groundwater vulnerability. The significance of land-use impact in contamination process called Index of Pollution Risk (IPR) and nitrate distribution process in the aquifer system was used as anthropogenic indicator together with the IPR in order to associate the land-use, the aquifer-vulnerability and human-activities. The final map of IPR allows determining possible polluted zones verified by high nitrate contents over the aquifer system. Land-use proved to be an important parameter necessary to correct the vulnerability maps using the DRASTIC method. This as-R. A. Dávila Pórcel et al. 1469 sessment is valid for situations where a specific time is defined because six of seven parameters change their properties in a very long term. The IPR-map could be an important key tool to prevent complex scenarios of groundwater contamination and to improve the aquifer management for decision makers, governments and private companies.

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“…González Vázquez et al (2005) reported that inappropriate farming techniques and four years of drought (1992)(1993)(1994)(1995) produced high nitrate concentration conditions in an aquifer located in the Province of Seville, southwest Spain. The study showed the impact of crops and the cropping system on groundwater quality.…”

Section: Water and Soil Quality In Selected Arid And Semi-arid Regionmentioning

confidence: 99%

Environmental Effects of Irrigation in Arid and Semi-Arid Regions

Fernández-Cirelli

Arumí²,

Rivera³

et al. 2009

Chilean J. Agric. Res.

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This article reviews the state of the art with respect to the environmental effects of irrigated agriculture on water and soil quality in arid and semi-arid regions on a field scale. Information is scarce and fragmentary. Examples in selected areas of other arid and semi-arid regions in the world clearly show the importance of studying the environmental impact of irrigation practices on water and soil quality. Studies mainly refer to waterlogging and salinization. As regards agrochemicals, fertilizers have been taken into account through nitrate leaching. The impact of micropollutants such as pesticides and heavy metals on water and soil quality is studied mainly by modeling. Pharmaceutical compounds emerge as pollutants when wastewater is used for irrigation without any previous treatment, situation which is now the object of new studies. There is an obvious need to study in-depth knowledge related to appropriate technologies for the use, treatment, and reuse of wastewater which is a valuable resource in arid and semi-arid regions.

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Nitrate Accumulation and Other Components of the Groundwater in Relation to Cropping System in an Aquifer in Southwestern Spain

Cited by 21 publications

References 13 publications

Effects of irrigated agriculture on water and soil quality (case perimeter Guelma, Algeria)

Effects of irrigated agriculture on water and soil quality (case perimeter Guelma, Algeria)

Land-Use Impact and Nitrate Analysis to Validate DRASTIC Vulnerability Maps Using a GIS Platform of Pablillo River Basin, Linares, N.L., Mexico

Environmental Effects of Irrigation in Arid and Semi-Arid Regions

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