Furrow inflow and infiltration variability impacts on irrigation management

Trout, T.J. (1990) Furrow inflow and infiltration variability impacts on irrigation management. Transaction of the ASAE. 33(4):1171-1178.

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Abstract

Furrow-to-furrow infiltration variability causes nonuniform
water absorption rates, furrow stream advance
rates, and runoff rates from the furrow tail end. Unevenly
set inflow rates to furrows compound these latter two nonuniformities.
In order for an irrigator to ensure adequate
water advance on a desired portion of furrows, the average
inflow rate must be increased. To ensure adequate water
application to a desired portion of the furrows, the
application time must be extended. Thus, inflow and
infiltration variability result in excess water application and
reduced irrigation water use efficiency. Models, based on
Gaussian distributions of inflow and infiltration, are
presented which relate excess furrow irrigation applications
to these variabilities

Item Type:	Article
NWISRL Publication Number:	0717
Subjects:	Irrigation > Furrow irrigation > Infiltration Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:53
Last Modified:	23 Dec 2016 16:30
Item ID:	540
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/540