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Nitrogen balance in and export from agricultural fields associated with controlled drainage systems and denitrifying bioreactors
Abstract Nitrate loss from drainage tiles across the cornbelt of the upper midwestern US is a result of intensive agriculture with limited crop diversity, extensive periods of fallow soil, and theExpand
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Effectiveness of Constructed Wetlands in Reducing Nitrogen and Phosphorus Export from Agricultural Tile Drainage
Much of the nonpoint N and P entering surface waters of the Midwest is from agriculture. We determined if constructed wetlands could be used to reduce nonpoint N and P exports from agricultural tileExpand
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Temperature and Substrate Control Woodchip Bioreactor Performance in Reducing Tile Nitrate Loads in East-Central Illinois.
Tile drainage is the major source of nitrate in the upper Midwest, and end-of-tile removal techniques such as wood chip bioreactors have been installed that allow current farming practices toExpand
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Assessment of management alternatives on a small agricultural watershed
The AGNPS model was used to assess the impact of management practices on the water quantity and quality from Owl Run, a 1153-ha watershed in the Piedmont Region of Virginia. Prior to this assessment,Expand
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Estimation of flow and transport parameters for woodchip-based bioreactors: II. field-scale bioreactor
To reduce nitrate-N from tile drains, subsurface bioreactors using woodchips as a carbon source for denitrification have been installed for the past two decades. The objectives of this study were toExpand
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Subsurface water quality from a flat tile-drained watershed in Illinois, USA
Abstract Subsurface drainage is a common practice in many agricultural watersheds in the Mid-Western region of the United States. A typical drainage system in east central Illinois is not spaced in aExpand
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Stream transport of herbicides and metabolites in a tile-drained, agricultural watershed.
The occurrence of metabolites of many commonly used herbicides in streams has not been studied extensively in tile-drained watersheds. We collected water samples throughout the Upper Embarras RiverExpand
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Climate Change Impacts on Flow, Sediment and Nutrient Export in a Great Lakes Watershed Using SWAT
This study aims at understanding the impacts of projected climate change on the hydrological processes within the Maumee River watershed (16 395 km2) lying in the Lake Erie Basin using soil and waterExpand
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Subsurface Drainage and Water Quality: The Illinois Experience
Drainage of excess water from agricultural lands is essential for crop growth. In the Midwestern U.S., Illinois, Indiana, Iowa, Ohio, Minnesota, Michigan, Missouri, and Wisconsin are some of theExpand
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Characterizing the Performance of Denitrifying Bioreactors during Simulated Subsurface Drainage Events.
The need to mitigate nitrate export from corn and soybean fields with subsurface (tile) drainage systems, a major environmental issue in the midwestern United States, has made the efficacy ofExpand
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