Reducing mass flux of drainage salts
| dc.contributor.author | Gardner, Jeryl R., author | |
| dc.contributor.author | Guitjens, J. C., author | |
| dc.contributor.author | U.S. Committee on Irrigation and Drainage, publisher | |
| dc.date.accessioned | 2020-05-13T19:50:48Z | |
| dc.date.available | 2020-05-13T19:50:48Z | |
| dc.date.issued | 2000-06 | |
| dc.description | Presented at the 2000 USCID international conference, Challenges facing irrigation and drainage in the new millennium on June 20-24 in Fort Collins, Colorado. | |
| dc.description.abstract | Irrigation of arid and semi-arid agricultural regions has produced salinization and waterlogging problems. Tile drainage systems will effectively lower the water table and transport salts out of the root zone. However, the salts exiting the irrigated soils via drains cause new problems, such as reducing groundwater quality and damaging wetlands habitat. This research investigates the simulation of management alternatives that control drainage and the mass flux of salts in the drainage water and demonstrates an improvement over the use of leaching fraction and leaching requirement as conceptual models. HYDRUS_2D, a two-dimensional Windows-based modeling environment, is used to simulate solute transport under the influence of alternative irrigation management practices for an alfalfa crop. HYDRUS_2D uses a finite element technique that numerically solves the Richards equation for saturated/unsaturated flow, and the Fickian-based advection/dispersion equation for solute transport in variably saturated porous media. The response to management alternatives (depth of irrigations, using water sources of varying quality in irrigating a soil with varying salinity) allows managers to evaluate the influences on the mass flux of salts in drainage water before they put a new approach into practice. The results include graphical displays of water and solute fluxes and the salt distribution in the upper soil profile. | |
| dc.format.medium | born digital | |
| dc.format.medium | CD-ROMs | |
| dc.format.medium | proceedings (reports) | |
| dc.identifier.uri | https://hdl.handle.net/10217/206720 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation.ispartof | Irrigation Management | |
| dc.relation.ispartof | Challenges facing irrigation and drainage in the new millennium. Volume 2, Poster session | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.source | Contained in: Challenges facing irrigation and drainage in the new millennium. Volume 2, Poster session, Fort Collins, Colorado, June 20-24, http://hdl.handle.net/10217/46320 | |
| dc.title | Reducing mass flux of drainage salts | |
| dc.title.alternative | Irrigation and drainage in the new millennium | |
| dc.type | Text |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- 112_2000-USCID-V2_Gardner.pdf
- Size:
- 3.51 MB
- Format:
- Adobe Portable Document Format