Campus Units
Agricultural and Biosystems Engineering
Document Type
Conference Proceeding
Conference
2nd International Symposium on Preferential Flow Water: Movement and Chemical Transport in the Environment
Publication Version
Published Version
Publication Date
1-3-2001
Journal or Book Title
Proceedings of the 2nd International Symposium on Preferential Flow Water: Movement and Chemical Transport in the Environment
First Page
41
Last Page
44
DOI
10.13031/2013.2080
Conference Title
2nd International Symposium on Preferential Flow Water: Movement and Chemical Transport in the Environment
Conference Date
January 3-5, 2001
City
Honolulu, HI
Abstract
The variation in continuity and geometry of macropores over the growing season can affect subsurface drain ‘tile’ water and nitrate-nitrogen (NO3-N) concentrations in tile water. This study analyzes the patterns of tile flows and nitrate-nitrogen (NO3-N) concentrations in tile water in relation to rainfall events using field measured data as well as invoking the macropore option of the Root Zone Water Quality Model (RZWQM98). The increase in NO3-N concentration in tile flow during the growing season in comparison with the decrease in NO3-N concentrations after the crop harvest following heavy rainfalls support the role of dual flow theory, soil matrix flow and preferential flow. These results and model simulations suggest that variation in macropore during the growing season can have significant effect on tile flow and NO3-N concentrations in tile water for soils similar to the study area.
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Recommended Citation
Bakhsh, Allah; Kanwar, Ramesh S.; Jaynes, D. B.; Colvin, T. S.; and Ahuja, L. R., "Preferential Flow Effects on NO3-N Losses with Tile Flow" (2001). Agricultural and Biosystems Engineering Conference Proceedings and Presentations. 611.
https://lib.dr.iastate.edu/abe_eng_conf/611
Included in
Agriculture Commons, Bioresource and Agricultural Engineering Commons, Water Resource Management Commons
Comments
This proceeding is published as Bakhsh, A., R. S. Kanwar, D. B. Jaynes, T. S. Colvin, and L. R. Ahuja. "Preferential Flow Effects on NO3-N Losses with Tile Flow." In Proceedings of the 2nd International Symposium on Preferential Flow Water: Movement and Chemical Transport in the Environment, ASAE Publication Number 701P0006 (David Bosch and Kevin King, eds.). (2001): 41-44. DOI: 10.13031/2013.2080.