Wood chip denitrification bioreactors can reduce nitrate in tile drainage
نویسندگان
چکیده
منابع مشابه
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 to continue, with nitrate removed through denitrification. There have been few multiyear studies of bioreactors examining controls on nitrate removal rates. We evaluated the nitrate removal performance of two...
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Topographically heterogeneous agricultural landscapes can complicate and accelerate agrochemical contamination of streams due to rapid transport of water and chemicals to poorly drained lower-landscape positions and shallow ground water. In the semiarid Palouse region, large parts of these landscapes have been tile drained to enhance crop yield. From 2000-2004 we monitored the discharge of a ti...
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Ž . y Nitrogen N in surface waters has been linked to agricultural crop production, and more specifically, to NO exported 3 Ž by tile drainage. The objective of this study was to evaluate agricultural N pools and fluxes in a seed cornrsoybean Zea . Ž . y maize L.rGlycine max L. watershed 40 ha to relate soil inorganic N pools with annual losses of NO in drainage tiles. 3 During a 2-year period ...
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Riparian buffers are a proven practice for removing NO from overland flow and shallow groundwater. However, in landscapes with artificial subsurface (tile) drainage, most of the subsurface flow leaving fields is passed through the buffers in drainage pipes, leaving little opportunity for NO removal. We investigated the feasibility of re-routing a fraction of field tile drainage as subsurface fl...
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Thoroughly tested simulation models are needed to help quantify the long-term effects of agriculture. We evaluated the Root Zone Water Quality Model (RZWQM) response to different N management strategies and then used the tested model with observed weather data from 1961– 2003 to quantify long-term effects on corn (Zea mays L.) yield and flow weighted nitrate-N concentration in subsurface “tile”...
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ژورنال
عنوان ژورنال: California Agriculture
سال: 2017
ISSN: 0008-0845
DOI: 10.3733/ca.2017a0007