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[1 - 20] [21 - 40] [41 - 60] [61 - 80] [81 - 100] [101 - 120] [121 - 140] [141 - 160] [161 - 180] [181 - 200] [201 - 220] [221 - 221] Next | Records 1 thru 20 of 221
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01. | Title: Adjustments of Agricultural Productivity for Nitrogen Effluent in the Great Plains Author(s): Rezek, J.; Perrin, R. Publisher: University of Minnesota Resource Availability: No Guarantee NAL Subject: land productivity/ nitrogen/ agricultural runoff/ environmental impact/ econometric models/ production economics/ agricultural economics/ prices/ Great Plains region/ Kansas/ Nebraska/ Oklahoma/ South Dakota/ Date: 2001-05-00 Go To Full Record |
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02. | Title: Agricultural Air Emissions Effects on Water Quality Author(s): Boehmer, S. M. Publisher: U.S. Department of Agriculture Resource Availability: No Guarantee NAL Subject: air quality/ air pollution/ emissions/ agricultural wastes/ animal manures/ agricultural runoff/ nonpoint source pollution/ pesticide residues/ herbicide residues/ fertilizers/ nitrate nitrogen/ phosphorus/ ammonia/ biogeochemical cycles/ atmospheric deposition/ precipitation/ spray drift/ water pollution/ water quality/ watersheds/ groundwater contamination/ surface water/ streams/ publications/ Date: 2002-10-30 Go To Full Record |
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03. | Title: Agricultural Drainage: Water Quality Impacts and Subsurface Drainage Studies in the Midwest Author(s): Zucker, L.E.; Brown, L.C. Publisher: Department of Food, Agricultural, and Biological Engineering at The Ohio State University Resource Availability: No Guarantee NAL Subject: drainage/ management systems/ extension education/ best management practices/ agricultural runoff/ environmental impact/ surface drainage/ subsurface drainage/ soil hydraulic properties/ wetlands/ groundwater contamination/ water quality/ water management/ agricultural engineering/ on-farm research/ yields/ agrochemicals/ nitrogen/ pesticide application/ information sources/ Management Systems Evaluation Areas/ Midwestern United States/ Ohio/ Illinois/ Indiana/ Minnesota/ Michigan/ Iowa/ Missouri/ Wisconsin/ Date: 1998-00-00 Go To Full Record |
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04. | Title: Agricultural Nitrogen Management Helps Protect Water Quality Author(s): Iowa State University Cooperative Extension Publisher: Iowa State University Resource Availability: No Guarantee NAL Subject: water quality/ cropping systems/ management systems/ nitrate nitrogen/ water pollution/ leaching/ groundwater contamination/ best management practices/ water management/ fertilizer application/ plant pigments/ colorimetry/ precision agriculture/ fertilizer rates/ tillage/ nutrient management/ agricultural policy/ extension education/ research programs/ Management Systems Evaluation Areas/ Midwestern United States/ Iowa/ Minnesota/ Missouri/ Nebraska/ Ohio/ Kansas/ North Dakota/ South Dakota/ Wisconsin/ Date: 2000-04-00 Go To Full Record |
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05. | Title: Agricultural Nitrogen Management to Protect Water Quality Author(s): Power, J. F.; Flowerday, A. D.; Wiese, R. A.; Watts, D. G. Publisher: U. S. Department of Agriculture Resource Availability: No Guarantee NAL Subject: water quality/ cropping systems/ management systems/ nitrate nitrogen/ water pollution/ leaching/ groundwater contamination/ best management practices/ water management/ irrigation management/ fertilizer application/ soil nutrient dynamics/ plant pigments/ colorimetry/ remote sensing/ precision agriculture/ fertilizer rates/ tillage/ nutrient management/ agricultural policy/ extension education/ research programs/ Management Systems Evaluation Areas/ Midwestern United States/ Iowa/ Minnesota/ Missouri/ Nebraska/ Ohio/ Kansas/ North Dakota/ South Dakota/ Wisconsin/ Date: 1998-12-00 Go To Full Record |
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06. | 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 |
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07. | Title: Agricultural Perspective: Agriculture and Its Relationship to Toxic Dinoflagellates in the Chesapeake Bay Author(s): Fretz, T. A. Publisher: University of Maryland Resource Availability: No Guarantee NAL Subject: Pfiesteria piscicida/ nutrient enrichment/ land application/ nitrogen/ phosphorus/ nutrient management/ animal production/ animal manure management/ poultry/ land rehabilitation/ remediation/ economic analysis/ Chesapeake Bay/ Maryland/ Date: 1997-11-27 Go To Full Record |
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08. | Title: Agricultural Productivity and Environmental Impacts: The Role of Non-parametric Analysis Author(s): Shaik, S.; Perrin, R.K. Publisher: University of Minnesota Resource Availability: No Guarantee NAL Subject: land productivity/ nitrogen/ agricultural runoff/ environmental impact/ econometric models/ production economics/ agricultural economics/ prices/ Nebraska/ Date: 2001-00-00 Go To Full Record |
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09. | Title: Agriculture and Global Environmental Change Author(s): Center for International Earth Science Information Network Publisher: Columbia University Resource Availability: No Guarantee NAL Subject: global change/ climate change/ agriculture/ crop production/ livestock production/ elevated atmospheric gases/ emissions/ rice/ methane/ nitrogen fertilizers/ nitrous oxide/ biogeochemical cycles/ environmental policy/ agricultural policy/ indigenous peoples/ indigenous knowledge/ sustainable development/ biodiversity/ pollution control/ Date: 1996-00-00 Go To Full Record |
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10. | Title: Agriculture and Water Quality: A National Perspective Author(s): Hatfield, J. L. Publisher: Conservation Technology Information Center Resource Availability: No Guarantee NAL Subject: nonpoint source pollution/ water quality/ water pollution/ agricultural runoff/ hypoxia/ nitrate nitrogen/ soil water movement/ biogeochemical cycles/ nutrient management/ pesticides/ watershed management/ United States/ Date: 2001-00-00 Go To Full Record |
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11. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion II Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ mountains/ forests/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Arizona/ California/ Colorado/ Idaho/ Montana/ New Mexico/ Oregon/ South Dakota/ Texas/ Utah/ Washington/ Wyoming/ Western United States/ United States/ Date: 2000-12-00 Go To Full Record |
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12. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion III Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ deserts/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Arizona/ California/ Colorado/ Idaho/ Montana/ Nevada/ New Mexico/ Oregon/ Texas/ Utah/ Washington/ Wyoming/ Western United States/ United States/ Date: 2001-12-00 Go To Full Record |
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13. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion IV Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ grasslands/ shrublands/ rangelands/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Colorado/ Kansas/ Montana/ Nebraska/ North Dakota/ New Mexico/ Oklahoma/ Texas/ Wyoming/ Western United States/ Midwestern United States/ Great Plains region/ United States/ Date: 2001-12-00 Go To Full Record |
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14. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion IX Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ forests/ agricultural land/ pastures/ aquaculture/ poultry industry/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Alabama/ Arkansas/ Florida/ Georgia/ Illinois/ Indiana/ Iowa/ Kansas/ Kentucky/ Louisiana/ Maryland/ Mississippi/ Missouri/ New Jersey/ North Carolina/ Pennsylvania/ South Carolina/ Tennessee/ Texas/ Virginia/ Midwestern United States/ Northeastern United States/ Southeastern United States/ United States/ Date: 2000-12-00 Go To Full Record |
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15. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion V Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ agricultural land/ prairies/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Colorado/ Kansas/ Montana/ Nebraska/ North Dakota/ New Mexico/ Oklahoma/ South Dakota/ Texas/ Wyoming/ Western United States/ Great Plains region/ Midwestern United States/ United States/ Date: 2001-12-00 Go To Full Record |
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16. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion VI Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ agricultural land/ prairies/ pastures/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Illinois/ Indiana/ Iowa/ Kansas/ Michigan/ Minnesota/ Nebraska/ North Dakota/ Ohio/ South Dakota/ Wisconsin/ Midwestern United States/ Great Plains region/ Corn Belt region/ United States/ Date: 2000-12-00 Go To Full Record |
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17. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion VII Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ glacial deposits/ dairy farming/ pastures/ wetlands/ forests/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Illinois/ Indiana/ Iowa/ Michigan/ Minnesota/ New York/ Ohio/ Pennsylvania/ Wisconsin/ Midwestern United States/ Northeastern United States/ Great Lakes region/ United States/ Date: 2000-12-00 Go To Full Record |
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18. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion VIII Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ glacial deposits/ wetlands/ forests/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Maine/ Massachusetts/ Michigan/ Minnesota/ New Hampshire/ New Jersey/ New York/ Pennsylvania/ Vermont/ Wisconsin/ Midwestern United States/ Northeastern United States/ Great Lakes region/ United States/ Date: 2000-12-00 Go To Full Record |
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19. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion XI Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ forests/ mountains/ mining/ steepland soils/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Alabama/ Arkansas/ Georgia/ Kentucky/ Missouri/ New Jersey/ New York/ North Carolina/ Ohio/ Oklahoma/ Pennsylvania/ South Carolina/ Tennessee/ Virginia/ West Virginia/ Midwestern United States/ Northeastern United States/ Southeastern United States/ Appalachian region/ United States/ Date: 2000-12-00 Go To Full Record |
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20. | Title: Ambient water quality criteria recommendations: information supporting the development of state and tribal nutrient criteria: lakes and reserviors in nutrient ecoregion XII Author(s): U.S. Environmental Protection Agency, Office of Water Publisher: U.S. Environmental Protection Agency Resource Availability: No Guarantee NAL Subject: water quality criteria/ water quality standards/ environmental policy/ laws and regulations/ Clean Water Act/ lakes/ reservoirs/ nutrient enrichment/ nitrogen/ phosphorus/ chlorophyll/ turbidity/ ecosystems/ geomorphology/ wetlands/ swamps/ marshes/ coastal plains/ lowlands/ data collection/ sampling/ statistical analysis/ environmental models/ quality control/ Alabama/ Florida/ Georgia/ Mississippi/ Southeastern United States/ United States/ Date: 2000-12-00 Go To Full Record |