The rapid growth of world population has resulted in significantly increased global water demand. According to a recent report on limited water supply, conservation techniques and water use policies are needed to preserve water resources. Worldwide agriculture is the largest consumer of water, particularly for growing rice. Water use for rice production was chosen because rice will continue to be a staple crop for the majority of the worlds population and because of its pervasive use of water. Hence, this thesis was designed to investigate water conservation possibilities for rice production in two water management regimes: alternate flooding and drying, and continuous flooding (the latter is the traditional water management technique in irrigated rice culture). The alternate flooding and drying treatment reduced water use by 13-29 percent and increased rice grain yield by 33-36 percent. Results demonstrate that there is great potential to increase water use efficiency in wetland rice culture without reducing rice grain yield. Moreover, the results can be used to strengthen government water use policies in irrigated rice farming systems.
| Identifer | oai:union.ndltd.org:LSU/oai:etd.lsu.edu:etd-07152005-104328 |
| Date | 19 July 2005 |
| Creators | Kongchum, Manoch |
| Contributors | Michael W. Wascom, Margaret A. Reams, Ronald D. DeLaune |
| Publisher | LSU |
| Source Sets | Louisiana State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lsu.edu/docs/available/etd-07152005-104328/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached herein a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to LSU or its agents the non-exclusive license to archive and make accessible, under the conditions specified below and in appropriate University policies, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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