Scientific Irrigation Scheduling for Salinity Control of Irrigation Return Flows

Jensen, Marvin E. (1975) Scientific Irrigation Scheduling for Salinity Control of Irrigation Return Flows. EPA Report (Technology Series) No. EPA-600/2-75-064. 92 pp.

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Abstract

A comprehensive review is presented of irrigation water management
principles, factors to be considered in improving irrigation water
management, leaching requirements, climatological approaches to irrigation
scheduling, scope of irrigation scheduling services in 1974,
basic concepts of scheduling services, and probable effects of scientific
irrigation scheduling on salinity of return flows. A definition
of irrigation water management efficiency is presented to evaluate the
annual volume of irrigation water used relative to the optimum amount
needed for maximum annual crop production or income. The term considers
the minimum but essential water needed for both consumptive and
nonconsumptive uses. The lack of significant changes in irrigation efficiency
during the past several decades is discussed and attributed to
problems associated with the management of a complex soil-crop-environment
system, a lack of economic incentives to make improvements, and
ineffective traditional approaches to improve irrigation water management.
New proposed minimal leaching practices are discussed. The
author concludes that substantial improvements in irrigation efficiencies
can be made before the potential minimal LF is reached on most
western irrigated projects.

This report was submitted in fulfillment of Interagency Project Number
EPA-IAG-D4-F399 by the U. S. Department of Agriculture, Agricultural
Research Service, under the partial sponsorship of the Environmental
Protection Agency. Work was completed as of June 1975.

Item Type:	Technical Bulletin
NWISRL Publication Number:	0349
Subjects:	Irrigation > Irrigation scheduling Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:57
Last Modified:	15 Feb 2017 18:46
Item ID:	1099
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1099