 |
|
|
|
|
|
| |
|
|
 |
|
|
|
|
|
|
[1 - 7]
| Records 1 thru 7 of 7
|
|
|
01. | Title: Agricultural Nitrogen Trends in the Mississippi Basin, 1949-1997
Author(s): Burkart, M. R.; James, D. E.
Publisher: U. S. Department of Agriculture, Agricultural Research Service, National Soil Tilth Laboratory
Resource Availability: No Guarantee
NAL Subject: hypoxia/ nutrient enrichment/ nitrate nitrogen/ pollution load/ agricultural runoff/ fertilizers/ ammonia/ animal manures/ mineralization/ crop residues/ nitrogen fixation/ legumes/ atmospheric deposition/ denitrification/ harvesting/ temporal variation/ geographical distribution/ Census of Agriculture/ census data/ Mississippi River/ Gulf of Mexico/
Date: 2001-00-00
Go To Full Record |
|
|
|
02. | Title: Denitrification in a Restored Riparian Forest Wetland
Author(s): Lowrance, R.; Vellidis, G.; Hubbard, R.K.
Publisher: U. S. Department of Agriculture
Resource Availability: No Guarantee
NAL Subject: denitrification/ riparian forests/ wetlands/ ecological restoration/ liquid manure/ nitrogen/ land application/ groundwater contamination/ nutrient management/ hydrogeology/ spatial variation/ temporal variation/ coastal plains/ Southeastern United States/
Date: 1995-00-00
Go To Full Record |
|
|
|
03. | Title: Estimation of Nitrate Contamination of an Agro-Ecosystem Outwash Aquifer Using a Nitrogen Mass-Balance Budget
Author(s): Puckett, L. J.; Cowdery, T. K.; Lorenz, D. L.; Stoner, J. D.
Publisher: U. S. Department of the Interior, U. S. Geological Survey
Resource Availability: No Guarantee
NAL Subject: nitrate nitrogen/ groundwater contamination/ aquifers/ biogeochemical cycles/ denitrification/ nitrogen fixation/ agroecosystems/ source-sink relationships/ leaching/ nutrient management/ Minnesota/
Date: 1999-00-00
Go To Full Record |
|
|
|
04. | Title: Fate of Nitrate in Subsurface Drainage Waters
Author(s): Pionke, H. B.; Lowrance, R.
Publisher: U. S. Department of Agriculture
Resource Availability: No Guarantee
NAL Subject: subsurface drainage/ nitrogen/ environmental fate/ groundwater contamination/ denitrification/ aquifers/ riparian areas/ hydrogeology/ vadose zone/ decision making/ United States/
Date: 1991-00-00
Go To Full Record |
|
|
|
05. | Title: Geographic Distribution of Excess Agricultural Nitrogen in the Gulf of Mexico
Author(s): Burkart, M.R.; James, D. E.
Publisher: U. S. Department of Agriculture
Resource Availability: No Guarantee
NAL Subject: hypoxia/ nutrient enrichment/ nitrate nitrogen/ pollution load/ agricultural runoff/ fertilizers/ ammonia/ animal manures/ mineralization/ crop residues/ nitrogen fixation/ legumes/ atmospheric deposition/ denitrification/ harvesting/ temporal variation/ geographical distribution/ Census of Agriculture/ census data/ Mississippi River/ Gulf of Mexico/
Date: 2001-00-00
Go To Full Record |
|
|
|
06. | Title: Hydrogeologic Framework, Ground-Water Geochemistry, and Assessment of Nitrogen Yield from Base Flow in Two Agricultural Watersheds, Kent County, Maryland
Author(s): Bachman, L. J.; Krantz, D. E.; Böhlke, J.
Publisher: U.S. Environmental Protection Agency
Resource Availability: No Guarantee
NAL Subject: stratigraphy/ hydrogeology/ aquifers/ geochemistry/ denitrification/ nitrogen/ groundwater flow/ base flow/ stream flow/ soil water movement/ water pollution/ eutrophication/ watershed management/ nutrient management/ wells/ sampling/ water quality analysis/ Maryland/
Date: 2002-01-00
Go To Full Record |
|
|
|
07. | Title: Vegetated Stream Riparian Zones: Their Effects on Stream Nutrients, Sediments, and Toxic Substances
Author(s): Correll, D.
Publisher: University of Nebraska Lincoln
Resource Availability: No Guarantee
NAL Subject: riparian areas/ water quality/ information sources/ conservation buffers/ filter strips/ floodplains/ vegetation/ ground cover plants/ herbaceous plants/ riparian forests/ grasses/ hydrologic factors/ geomorphology/ water quality criteria/ trace elements/ heavy metals/ nitrogen/ nitrites/ nitrates/ ammonia/ phosphorus/ herbicides/ salts/ organic matter/ total suspended solids/ denitrification/ evapotranspiration/ nitrification/ infiltration (hydrology)/ soil water movement/ sediment deposition/ biogeochemical cycles/
Date: 2003-04-00
Go To Full Record |
|
|
|
|
|
|
