| Main Title |
Irrigation management affecting quality and quantity of return flow / |
| Author |
Willardson, Lyman S.,
|
| Other Authors |
|
| CORP Author |
Utah State Univ., Logan.;Robert S. Kerr Environmental Research Lab., Ada, Okla. Source Management Branch. |
| Publisher |
Robert S. Kerr Environmental Research Laboratory, Office of Research and Development, U.S. Enivironmental Protection Agency ; Available through the National Technical Information Service, |
| Year Published |
1976 |
| Report Number |
EPA-600/2-76-226; EPA-R-802864 |
| Stock Number |
PB-265 591 |
| OCLC Number |
02944541 |
| Subjects |
Irrigation--Management ;
Irrigation water
|
| Additional Subjects |
Irrigation ;
Salinity ;
Water quality management ;
Leaching ;
Soil properties ;
Plants(Botany) ;
Mathematical models ;
Predictions ;
Inorganic salts ;
Subsurface drainage ;
Evapotranspiration ;
Field tests ;
Computerized simulation ;
Utah ;
Return flow
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-76-226 |
c.1 |
Headquarters Library/Washington,DC |
12/27/2013 |
| ELBD ARCHIVE |
EPA 600-2-76-226 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| EMBD |
EPA/600/2-76/226 |
|
NRMRL/GWERD Library/Ada,OK |
02/03/1995 |
| ESAD |
EPA 600-2-76-226 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-265 591 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xvi, 191 pages : illustrations ; 28 cm. |
| Abstract |
Management practices for control of quality and quantity of return subsurface flow were studied theoretically, in the laboratory, and full scale in the field. Field water management studies using waters of different qualities and different leaching fractions showed that the soil in the project area has a high salt buffering capacity. The soil acted either as a source or a sink for salt depending on the leaching fraction and the quality of water used for irrigation. Minimum average leaching fractions attainable on a field scale were found to be controlled by the uniformity of irrigation water application. Digital computer models were developed that consider properties of the soil, plant, water and environment. One model allows prediction of salt buildup and the yield response over several years. Salt buildup in the soil eventually caused a yield decrease. It was necessary to include a source-sink term in a salt flow model to accurately simulate field data. Source-sink phenomema observed in the field were confirmed by leaching tests conducted in the laboratory. Both models are potentially useful for salt management in the field. |
| Notes |
"Prepared by Utah University, Department of Agricultural and Irrigation Engineering and Department of Soil Science and Biometeorology, Logan, Utah, under grant no. R-802864." Includes bibliographical references (pages 146-147). |
| Place Published |
Ada, Okla. Springfield, Va., |
| Corporate Au Added Ent |
Robert S. Kerr Environmental Research Laboratory.; Utah State University. Department of Soil Science and Biometeorology. |
| PUB Date Free Form |
1976 |
| Series Title Traced |
Environmental protection tchnology series; EPA-600/2-76-226 |
| NTIS Prices |
PC A10/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| Merged OCLC records |
213754832; 1225721855 |
| OCLC Time Stamp |
20110104072239 |
| Language |
eng |
| SUDOCS Number |
EP 1.23/2:600/2-76-226 |
| Origin |
OCLC |
| Type |
CAT |
| OCLC Rec Leader |
01336cam 2200349Ii 45020 |
