Erosion and sedimentation processes on irrigated fields

Trout, Thomas J. and Neibling, W.H. (1993) Erosion and sedimentation processes on irrigated fields. Journal of Irrigation and Drainage Engineering. 119(6):947-963.

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Abstract

Soil erosion is sometimes excessive during furrow irrigation and under
center pivot sprinkler systems. An understanding of erosion processes is required
to predict and develop management practices to reduce irrigation induced erosion.
Little erosion process research has been carried out under irrigation, but much of
the extensive channel sediment transport and rainfall-induced erosion process research
can be adapted to irrigated conditions. Soil erosion occurs when fluid in
motion detaches and transports soil particles. Sedimentation occurs when the fluid
transport capacity decreases to less than the sediment load. Hydraulic forces of
moving water and soil factors such as aggregate stability and particle size determine
erosion and sedimentation. Under furrow irrigation, the shear of the overland flow
against the soil provides the detachment force and is a primary factor determining
channel transport capacity. With sprinkler irrigation, water drop energy detaches
particles, some of which may be transported downslope by shallow interrill flow if
the water application rate exceeds the soil infiltration rate.

Item Type:	Article
NWISRL Publication Number:	0824
Subjects:	Irrigation > Furrow irrigation > Erosion Irrigation > Furrow irrigation > Runoff losses > Sediment Soil > Erosion Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:53
Last Modified:	01 Dec 2016 20:45
Item ID:	609
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/609