Erosion: Irrigation-Induced

Authored by: Robert E. Sojka , David L. Bjorneberg

Encyclopedia of Environmental Management

Print publication date:  December  2012
Online publication date:  December  2012

Print ISBN: 9781439829271
eBook ISBN: 9781351235860
Adobe ISBN:

10.1081/E-EEM-120042685

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Abstract

Most irrigation is on fragile arid soils that have enormous crop yield potential when irrigated. However, the yield potential is easily lost if the thin veneer of topsoil is eroded. Runoff and irrigation return flows (necessary in many surface irrigation schemes) deliver sediment (human, animal and plant pathogens; nutrients and pesticides) to downstream fields and riparian waters. These pollutants accumulate in runoff primarily as a result of erosion.

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