Effects of Irrigated Agriculture on Groundwater Quality in Corn Belt and Lake States
Publication: Journal of Irrigation and Drainage Engineering
Volume 115, Issue 5
Abstract
The impact of irrigation on groundwater quality is influenced by climate, topography, geology, soils, geohydrology, crops, and agricultural practices. Since the early 1950s, the irrigated crop acreage in the Corn Belt and Lake States has increased markedly. Irrigation in these regions is concentrated in areas underlain by sandy soils with low moisture‐holding capacities, where supplemental moisture and relatively heavy applications of agrichemicals are needed to achieve economically viable crop yields. Due to the high hydraulic conductivities and low attenuation capacities of sandy soils, shallow aquifers underlying these areas are particularly susceptible to contamination with nitrates and stable, soluble pesticides. Present and potential problems associated with irrigation in these states are illustrated by available case studies from the Central Sand Plain of Wisconsin.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 115 • Issue 5 • October 1989
Pages: 773 - 790
Copyright
Copyright © 1989 ASCE.
History
Published online: Oct 1, 1989
Published in print: Oct 1989
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