Record Display for the EPA National Library Catalog

RECORD NUMBER: 15 OF 30

OLS Field Name OLS Field Data
Main Title Influence of trickle and surface irrigation on return flow quality /
Author Wierenga, P. J.
CORP Author New Mexico State Univ., University Park. Dept. of Agronomy.;Robert S. Kerr Environmental Research Lab., Ada, Okla.
Publisher Robert S. Kerr Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; for sale by the National Technical Information Service,
Year Published 1977
Report Number EPA-600/2-77-093; EPA-S-803156
Stock Number PB-270 650
OCLC Number 25398328
Subjects Microirrigation. ; Irrigation water. ; Soils, Salts in ; Trickle irrigation
Additional Subjects Irrigation ; Water quality ; Surface irrigation ; Sprinkler irrigation ; Field tests ; Salinity ; Soil water ; Concentration(Composition) ; Leaching ; Soil properties ; Tables(Data) ; Inorganic salts ; Hydraulic conductivity ; Efficiency ; Correlation techniques ; New Mexico ; Return flow ; Trickle irrigation
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101B0DY.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 600/2-77-093 Region 3 Library/Philadelphia, PA 06/02/2000
EJBD ARCHIVE EPA 600-2-77-093 Headquarters Library/Washington,DC 01/11/2011
EJBD  EPA 600-2-77-093 Headquarters Library/Washington,DC 03/21/2014
EKAM  EPA-600/2-77-093 Region 4 Library/Atlanta,GA 08/27/1999
EMBD  EPA/600/2-77/093 GWERD Library/Ada,OK 02/17/1995
ESAD  EPA 600-2-77-093 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-270 650 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation xviii, 158 p. : ill., graphs ; 28 cm.
Abstract
A field plot study was conducted to determine the effects of controlled surface irrigation and trickle irrigation on the quality and quantity of irrigation return flow. The surface-irrigated plots showed an increase in salt concentration with depth to the clay-sand interface. Below the clay-sand interface at 80-100 cm, a sharp decrease in salt concentration was observed. It appeared that a larger change in soil salinity was produced by altering irrigation frequency than by changing irrigation efficiency. Irrigating when 50 percent of the soil water had been depleted was the irrigation frequency most conducive to salt retention by the soils. Trickle irrigation was effective in controlling the volume of return flow, while maintaining relatively low salinity levels in the soil around the trickle emitters. Accumulated salts were readily moved away from trickle lines by preplant irrigation or rainfall. The mean salt concentration of the irrigation return flow, as estimated from deep soil solution samples, agreed well with the average salt concentration of the groundwater to a depth of 11 meters. Below 11 meters the salt content of the groundwater decreased.
Notes
Prepared by Department of Agronomy, New Mexico State University, Las Cruces, New Mexico, under Grant no. S-803156 (Formerly 13030 GLM) Bibliography: p. 105-106.