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Water quality modeling to evaluate BMPs in rice paddies
A water quality model applicable to rice paddies was developed using field data from 1999-2002. Use of the Dirac delta function efficiently explained the nutrient-concentration characteristics of ponded water. The model results agreed reasonably well with the observed data. The ponded-water quality...
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| Published in: | Water science and technology 2006, Vol.53 (2), p.253-261 |
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| container_end_page | 261 |
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| container_title | Water science and technology |
| container_volume | 53 |
| creator | Jeon, J H Yoon, C G Hwang, H S Jung, K W |
| description | A water quality model applicable to rice paddies was developed using field data from 1999-2002. Use of the Dirac delta function efficiently explained the nutrient-concentration characteristics of ponded water. The model results agreed reasonably well with the observed data. The ponded-water quality was influenced primarily by fertilization; nutrient concentration was especially high during early cultivation periods. Reducing surface drainage during the fertilization period may substantially reduce nonpoint source loading from paddies. Increased weir heights and shallow irrigation methods were evaluated by the model as practical methods for reducing nutrient loading from paddies. These methods were effective in reducing surface drainage and are suggested as "best management practices" (BMPs) if applied based on site-specific paddy conditions. |
| doi_str_mv | 10.2166/wst.2006.059 |
| format | article |
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These methods were effective in reducing surface drainage and are suggested as "best management practices" (BMPs) if applied based on site-specific paddy conditions.</description><identifier>ISSN: 0273-1223</identifier><identifier>ISBN: 1843395533</identifier><identifier>ISBN: 9781843395539</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2006.059</identifier><identifier>PMID: 16594344</identifier><language>eng</language><publisher>England: IWA Publishing</publisher><subject>Agriculture - methods ; Biological fertilization ; Cultivation ; Delta function ; Drainage ; Drainage management ; Environmental Monitoring - methods ; Fertilization ; Fertilizers ; Korea ; Methods ; Mineral nutrients ; Modelling ; Models, Theoretical ; Nitrogen ; Nutrient concentrations ; Nutrient loading ; Oryza ; Oryza sativa ; Pesticide Residues - analysis ; Phosphorus ; Rain ; Rice fields ; Soil Pollutants ; Stormwater ; Surface drainage ; Water Movements ; Water Pollutants, Chemical - analysis ; Water Pollution ; Water quality ; Water Supply ; Weirs</subject><ispartof>Water science and technology, 2006, Vol.53 (2), p.253-261</ispartof><rights>Copyright IWA Publishing Jan 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c411t-9489b5e1fe32f9d806d82db308f5123260014bbbac6fddd503103a84d15076d43</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,4024,23930,23931,25140,27923,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16594344$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Yamada, K</contributor><contributor>Fujii, S</contributor><contributor>Kunimatsu T. 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Increased weir heights and shallow irrigation methods were evaluated by the model as practical methods for reducing nutrient loading from paddies. 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(eds.)</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Water quality modeling to evaluate BMPs in rice paddies</atitle><jtitle>Water science and technology</jtitle><addtitle>Water Sci Technol</addtitle><date>2006</date><risdate>2006</risdate><volume>53</volume><issue>2</issue><spage>253</spage><epage>261</epage><pages>253-261</pages><issn>0273-1223</issn><eissn>1996-9732</eissn><isbn>1843395533</isbn><isbn>9781843395539</isbn><abstract>A water quality model applicable to rice paddies was developed using field data from 1999-2002. Use of the Dirac delta function efficiently explained the nutrient-concentration characteristics of ponded water. The model results agreed reasonably well with the observed data. The ponded-water quality was influenced primarily by fertilization; nutrient concentration was especially high during early cultivation periods. Reducing surface drainage during the fertilization period may substantially reduce nonpoint source loading from paddies. Increased weir heights and shallow irrigation methods were evaluated by the model as practical methods for reducing nutrient loading from paddies. These methods were effective in reducing surface drainage and are suggested as "best management practices" (BMPs) if applied based on site-specific paddy conditions.</abstract><cop>England</cop><pub>IWA Publishing</pub><pmid>16594344</pmid><doi>10.2166/wst.2006.059</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0273-1223 |
| ispartof | Water science and technology, 2006, Vol.53 (2), p.253-261 |
| issn | 0273-1223 1996-9732 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_745926023 |
| source | Alma/SFX Local Collection |
| subjects | Agriculture - methods Biological fertilization Cultivation Delta function Drainage Drainage management Environmental Monitoring - methods Fertilization Fertilizers Korea Methods Mineral nutrients Modelling Models, Theoretical Nitrogen Nutrient concentrations Nutrient loading Oryza Oryza sativa Pesticide Residues - analysis Phosphorus Rain Rice fields Soil Pollutants Stormwater Surface drainage Water Movements Water Pollutants, Chemical - analysis Water Pollution Water quality Water Supply Weirs |
| title | Water quality modeling to evaluate BMPs in rice paddies |
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