Estuaries

, Volume 25, Issue 4, pp 862–868 | Cite as

Reducing nonpoint nitrogen to acceptable levels with emphasis on the Upper Mississippi River Basin

Article

Abstract

The purpose of this paper is to expand debate about the future landscapes of the upper Midwest of the United States. The paper addresses options that could reinvent the agricultural systems of the Corn Belt, which coincides with the Upper Mississippi River Basin. The changes would move this region from one dependent on a grain economy, with low economic returns and high nutrient and sediment losses, to a more ecologically-based landscape emphasizing nutrient sinks, especially for nitrogen, and a legume base for supplementing fertilizer nitrogen. The reinvented systems require a higher level of management to lessen nitrogen and phosphorus losses while supporting family farms and strong rural communities. This reinvented agriculture would ultimately benefit the Gulf of Mexico by significantly lowering the amount of nitrate exported to the Gulf. The paper is not intended to be a comprehensive review of the literature, nor one that offers the full range of options to address the problems facing the watershed and the owners and operators of the land. Rather, I hope to facilitate discussion of the goals of midwestern U.S. agriculture in relation to ecosystem protection.

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Literature Cited

  1. Asner, G. P, T. R. Seastedt, andA. R. Townsend. 1997. The decoupling of terrestrial carbon and nitrogen cycles.BioScience 47:226–234.CrossRefGoogle Scholar
  2. Avery, D. T. 1995. Saving the Planet with Pesticides and Plastic: The Environmental Triumph of High-Yield Farming. Hudson Institute, Indianpolis, Indiana.Google Scholar
  3. Brezonik, P. L., V. J. Bierman, Jr.R. Alexander, J. Anderson, J. Barko, M. Dortch, L. Hatch, G. L. Hitchcock, D. Keeney, D. Mulla, V. Smith, C. Walker, T. Whitledge, andW. J. Wiseman, Jr. 1999. Effects of reducing nutrient loads to surface waters within the Mississippi River basin and the Gulf of Mexico. Topic 4 Report for the Integrated Assessment of Hypoxia in the Gulf of Mexico. NOAA Coastal Ocean Program Decision Analysis Series No. 18. NOAA Coastal Ocean Program, Silver Springs, Maryland.Google Scholar
  4. Brown, L. R. 1995. Who Will Feed China? A Wake Up Call for a Small Planet. The World Watch Environmental Alert Series. W. W. Norton and Company, New York.Google Scholar
  5. Downing, J. A., J. L. Baker, R. J. Diaz, T. Prato, N. N. Rabalais, andR. J. Zimmerman. 1999. Gulf of Mexico Hypoxia: Land-Sea Interactions. Council for Agricultural Science and Technology Task Force Report No. 134. Council for Agriculture Science and Technology. Ames, Iowa.Google Scholar
  6. Galloway, J. N., W. C. Keene, andG. Likens. 1994. Year 2020: Consequences of population growth and development on the deposition of oxidized nitrogen.Ambio 23:120–123.Google Scholar
  7. Goolsby, D. A. andW. A. Battaglin. 2001. Long-term changes in concentrations and flux of nitrogen in the Mississippi River Basin, USA.Hydrologic Processes 15:1209–1226.CrossRefGoogle Scholar
  8. Goolsby, D. A., W. A. Battaglin, B. T. Aulenbach, andR. P. Hooper. 2001. Nitrogen input to the Gulf of Mexico.Journal of Environmental Quality 30:329–336.Google Scholar
  9. Goolsby, D. A., W. A. Battaglin, G. B. Lawrence, R. S. Artz, B. T. Aulenbach, R. P. Hooper, D. R. Keeney, andG. J. Stensland. 1999. Flux and sources of nutrients in the Mississippi-Atchafalaya River basin. Topic 3 Report for the Integrated Assessment of Hypoxia in the Gulf of Mexico. NOAA Coastal Ocean Program Decision Analysis Series No. 17. NOAA Coastal Ocean Program, Silver Springs, Maryland.Google Scholar
  10. Hallberg, G. R. 1996. Water quality and watersheds: An Iowa perspective, p. 15–23.In Agriculture and Environment Conference Building Local Partnerships. Iowa State University Extension, Ames, Iowa.Google Scholar
  11. Hallberg, G. R. andD. R. Keeney. 1993. Nitrate, p. 297–332.In W. M. Alley (ed.). Regional Ground-Water Quality. Van Norstrand Reinhold, New York.Google Scholar
  12. Jackson, L. L., D. R. Keeney, andE. M. Gilbert. 2000. Swine manure management plans in north-central Iowa: Nutrient loading and policy implications.Journal of Soil and Water Conservation 55:205–212.Google Scholar
  13. Jordan, T. E. andD. E. Weller. 1996. Human contributions to terrestrial nitrogen flux.BioScience 46:655–664.CrossRefGoogle Scholar
  14. Keeney, D. R. 1997. What goes around comes around—The nitrogen issues cycle, p. 8–20.In J. J. Mortvedt (ed.). Dahlia Greidinger Symposium on Fertilizer and the Environment. Technion Israel Institute of Technology, Haifa, Israel.Google Scholar
  15. Keeney, D. R. andT. H. DeLuca. 1992. Des Moines River nitrate in relation to watershed practices: 1945 versus 1980s.Journal of Environmental Quality 22:367–272.Google Scholar
  16. Keeney, D. R. andJ. L. Hatfeld. 2001. The nitrogen cycle: Historical perspectives and current and potential future concerns, p. 3–16.In R. L. Follet and Jerry L. Hatfield (eds.). Nitrogen in the Environment: Sources, Problems and Management. Elsevier Science B.U., Amsterdam, The Netherlands.CrossRefGoogle Scholar
  17. Keeney, D. R. andM. Muller. 2000. Nitrogen and the Upper Mississippi River. Institute for Agriculture and Trade Policy, Minneapolis, Minnesota.Google Scholar
  18. Kellogg, R. L., C. H. Lander, D. C. Moffitt, and N. Gollehon. 2000. Manure nutrients relative to the capacity of cropland and pastureland to assimilate nutrients: Spatial and temporal trends for the U.S. United States Department of Agriculture, Natural Resources Conservation Service. Publication No. nps00-0579.Google Scholar
  19. Kendall, H. W. andD. Pimentel. 1994. Constraints on the expansion of the global food supply.Ambio 23:198–205.Google Scholar
  20. Kjaergaard, T. 1995. Agricultural development and nitrogen supply from an historical point of view, p. 3–14.In Nitrogen Leaching in Ecological Agriculture. A. B. Academic Publishers, Great Britain.Google Scholar
  21. Levins, R. A. andM. A. Schmitt. 1995. Green programs. A Corn Belt example of one way to reduce nitrogen use.Choices Second Quarter 1995:24–26.Google Scholar
  22. Moffat, A. S. 1998. Global nitrogen overload problem grows critical.Science 279:988–999.CrossRefGoogle Scholar
  23. National Research Council. 2000. Clean Coastal Waters: Understanding and reducing the effects of nutrient pollution. National Academy Press, Washington, D.C.Google Scholar
  24. Rabalais, N. N., R. E. Turner, D. Justić, Q. Dortch, W. J. Wiseman, Jr., andB. K. Sen Gupta. 1996. Nutrient changes in the Mississippi River and system responses on the adjacent continental shelf.Estuaries 19:386–407.CrossRefGoogle Scholar
  25. Rabalais, N. N., R. E. Turner, andW. J. Wiseman, Jr. 2001. Hypoxia in the Gulf of Mexico.Journal of Environmental Quality 30:320–329.CrossRefGoogle Scholar
  26. Randall, G. W. andD. J. Mulla. 2001. Nitrate-N in surface waters as influenced by climatic conditions and agricultural practices.Journal of Environmental Quality 30:337–344.CrossRefGoogle Scholar
  27. Rosegrant, M. W. andR. Livernash. 1996. Growing more food, doing less damage.Environment 38:6–11 and 38:30–31.Google Scholar
  28. Schilling, K. E. andR. D. Libra. 2000. The relationship of nitrate concentrations in streams to row crop land use in Iowa.Journal of Environmental Quality 29:1846–1851.Google Scholar
  29. Smith, M. E., M. A. Peters, J. P. Sullivan, U. Vsavada, andT. M. Worth. 2000. Curbing nitrogen runoff: Effects on production and trade.Agricultural Outlook May 2000:19–21.Google Scholar
  30. Vitousek, P. M., J. D. Aber, R. M. Howarth, G. E. Likens, P. A. Watson, D. W. Schindler, W. H. Schlesinger, andD. W. Tilman. 1997. Human alterations of the global nitrogen cycle: Sources and consequences.Ecological Applications 7:737–750.Google Scholar
  31. Vorley, W. andD. Keeney (eds.). 1998. Bugs in the System: Redesigning the Pesticide Industry for Sustainable Agriculture. Earthscan Publications Ltd., London, U.K.Google Scholar

Copyright information

© Estuarine Research Federation 2002

Authors and Affiliations

  1. 1.Institute for Agriculture and Trade PolicyMinneapolis

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