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Showing 1 to 9 of 9 for “"Nitrate Loss"”.
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Natural abundance of ¹⁵N as a tool for assessing patterns of nitrogen loss from forest ecosystems
… of a site. Among ecosystems with contrasting nitrate loss patterns, the [delta]15 N of soil and plant material should be higher at sites with higher nitrate losses. An underlying assumption in natural abundance isotope studies is that soil [delta]15 N is at steady-state over time. I found that …
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Transformation and fate of nitrate in northern prairie wetlands
… here addressed the transformation and fate of nitrate in northern prairie wetlands. A combination of wetland mesocosms and microcosms was utilized to conduct controlled and replicated experiments involving nitrate transformations with the overall objectives: (1) to estimate the capacities of …
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Fate of water and nitrate using drainage water management on tile systems in East-Central Illinois
Nitrate from agricultural fields in the tile-drained upper Midwest is one of the primary causes of the hypoxic zone that forms each summer in the Gulf of Mexico. Drainage water management (DWM) is a potential edge-of-field technique that is being studied as a method to improve soil water management …
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Exploring saturated drainageways for nitrate reduction in tile-drained agricultural lands
… of a saturated grassed waterway as a nitrate (NO₃⁻N) reduction practice in agricultural landscapes. Conducted in a 130-ha field in Black Hawk County, Iowa, the research monitored flow and NO₃⁻N concentration to quantify mass loss within the drainageway. The study site featured a …
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Optimising carbon storage by land-management
… sequestration, with a simultaneous reduction in nitrate loss from soil. Surface application to grasslands revealed no detrimental effects on soils, grassland productivity or water quality. Further trials investigated the impacts of arable conversion to short rotation coppice willow, and of …
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Effects of Western Spruce Budworm Herbivory on Forest Soils and Litter Decomposition in Central Washington
… Budworms appeared to accelerate ammonium and nitrate loss from the canopy via throughfall during the spring 2016 feeding season, yet those forms of nitrogen did not increase concurrently in soils suggesting rapid immobilization of nitrogen. In contrast, budworms did not influence throughfall …
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Effects of Reduced Early Post-Sprigging Nitrogen Application on Bermudagrass Sprig Establishment
Nitrate contamination of ground and surface waters is of serious concern in the United States. Since nitrate is considered one of the most widespread groundwater contaminants, research continues in many disciplines to identify and mediate possible sources (Petrovic, 1990). An opportunity to …
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Operating Rules for Improving the Firm Yield of an Off-Stream Blending Reservoir System Used for Reducing Nitrate in Drinking Water and Drought Storage
… which utilizes its OSBR to meet an internal nitrate-N concentration guideline of 8.0 mg/L through blending, is modeled as a case study. Using streamflow and nitrate-N data from May 1979 to April 1999, a firm yield of 2.21 mgd (million gallons per day) is attained under its current WQOR in …
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Soil carbon and nitrogen dynamics affected by tillage and cover cropping
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms