Assessing impacts and targeting of agricultural conservation practices

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Assessing impacts and targeting of agricultural conservation practices

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/8869

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dc.contributor.advisor Baffaut, Claire en_US
dc.contributor.advisor Anderson, S. H. (Stephen H.) en_US
dc.contributor.author O'Donnell, Thomas Kevin, 1978- en_US
dc.coverage.spatial Missouri -- Goodwater Creek Watershed (Boone County-Audrain County)
dc.date.accessioned 2010-10-26T13:54:25Z
dc.date.available 2010-10-26T13:54:25Z
dc.date.issued 2010 en_US
dc.date.submitted 2010 Summer en_US
dc.identifier.other ODonnellT-072710-D579 en_US
dc.identifier.uri http://hdl.handle.net/10355/8869
dc.description Title from PDF of title page (University of Missouri--Columbia, viewed on August 23, 2010). en_US
dc.description The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. en_US
dc.description Dissertation advisor: Dr. Claire Baffaut and Dr. Stephen H. Anderson. en_US
dc.description Vita. en_US
dc.description Includes bibliographical references. en_US
dc.description Ph. D. University of Missouri--Columbia 2010. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Soil, environmental, and atmospheric sciences. en_US
dc.description.abstract The U.S. Department of Agriculture initiated the Conservation Effects Assessment Project in 2003 to quantify water quality and wildlife benefits of conservation programs funded by the 2002 Farm Security and Rural Investment Act. This study examined the effects of agricultural best management practices (BMPs) implemented in the Goodwater Creek Experimental Watershed (GCEW) and investigated strategies to target future BMPs. Evaluation of storm events between 1993 and 2006 showed no significant BMP effects on dissolved atrazine and NO₃-N losses after 14% of the GCEW had been affected by BMP establishment. Approximately 20 and 4 years of monitoring will be needed before a statistically significant ([alpha]=0.05) 25% reduction in mean dissolved atrazine and nitrate-N can be demonstrated at the GCEW outlet, respectively. A widely used hydrologic model, SWAT, identified fields adjacent to streams with lesser depths to the argillic horizon as the highest risk for atrazine and NO₃-N pollutant loss. Twenty two percent and 34% of cropped fields in the GCEW required establishment of vegetative filter strips to reduce dissolved atrazine and NO₃-N loads by 25% at the GCEW based on SWAT predictions. A 99% accurate method to quantify soil redoximorphic features (SRFs) was developed using a digital camera and image classification software. Correlation between quantified SRFs and the topographic wetness index was found for one of two GCEW fields, indicating field soil surveys may serve as relatively quick reconnaissance methods to identify sensitive field areas. en_US
dc.format.extent xix, 344 pages en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.subject.lcsh Water quality en_US
dc.subject.lcsh Water quality management en_US
dc.subject.lcsh Water -- Pollution -- Environmental aspects en_US
dc.subject.lcsh Agricultural conservation en_US
dc.title Assessing impacts and targeting of agricultural conservation practices en_US
dc.type Thesis en_US
thesis.degree.discipline Soil, environmental and atmospheric sciences en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name Ph. D. en_US
thesis.degree.level Doctoral en_US
dc.identifier.merlin b80170729 en_US
dc.identifier.merlin b80170729
dc.identifier.oclc 671486936 en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Dissertations. 2010 Dissertations
dc.relation.ispartofcollection 2010 Freely available dissertations (MU)


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