Abstract
Several studies suggest that the $1.4 billion in government subsidies are encouraging the ethanol program without substantial benefits to the U.S. economy. Large ethanol industries and a few U.S. government agencies, such as the USDA, support the production of ethanol. Corn-farmers receive minimal profits. In the U.S. ethanol system, considerably more energy, including high-grade fossil fuel, is required to produce ethanol than is available in the energy-ethanol output. Specifically about 29% more energy is used to produce a gallon of ethanol than the energy in a gallon of ethanol. Fossil energy powers corn production and the fermentation/distillation processes. Increasing subsidized ethanol production will take more feed from livestock production, and is estimated to currently cost consumers an additional $1 billion per year. Ethanol production increases environmental degradation. Corn production causes more total soil erosion than any other crop. Also, corn production uses more insecticides, herbicides, and nitrogen fertilizers than any other crop. All these factors degrade the agricultural and natural environment and contribute to water pollution and air pollution. Increasing the cost of food and diverting human food resources to the costly inefficient production of ethanol fuel raise major ethical questions. These occur at a time when more than half of the world's population is malnourished. The ethical priority for corn and other food crops should be for food and feed. Subsidized ethanol produced from U.S. corn is not a renewable energy source.
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REFERENCES
Batty, J. C., and Keller, J., 1980, Energy requirements for irrigation, in Pimentel, D., ed., Handbook of Energy Utilization in Agriculture: CRC Press, Boca Raton, FL, p. 35–44.
Brown, L. R., 1997, The Agricultural Link: How Environmental Deterioration Could Disrupt Economic Progress: Worldwatch Institute, Washington, DC, 73p.
CalGasoline., 2002, Ethanol Is Not a Suitable Replacement for MTBE: CalGasoline.com. (9/17/2002).
Citizens for Tax Justice, 1997, More Corporate Giveaways High on Congressional Agenda: Citizens for Tax Justice. July 22, 1997. http://www.ctj.org/html/cgives97.htm. (9/17/2002).
Clary, G. M., and Haby, V. A., 2002, Potential for Profits from Alfalfa in East Texas: http://ruralbusiness.tamu.edu/forage.alfcop.pdf. (9/2/2002).
Coelho, S. T., Bolognini, M. F., Silva, O. C., Paletta, C. E. M., 2002, Biofuels in Brazil: The Current Situation: CENBIO—The National Reference Center on Biomass. http://www.cenbio.org. br/doc_port3.html. (11/12/2001).
Croysdale, D., 2001, Belatedly, DNR Concedes Our Air is Clean: The Daily Reporter. November 6, 2001. http://www. dailyreporter.com/editorials/eds/nov07/asa11–7.shtml. (9/17/ 2002).
DOE, 2002, Transport costs of ethanol total 8¢ per gallon: U.S. Department of Energy, Washington, D. C. http://www/ eia.doe.gov/oiaf/servicerpt/fuel/pdf/question3.pdf (10/8/2002).
Duffy, M., 2001, Prices on the Rise: How will Higher Energy Costs Impact Farmers?: http://www.ag.iastate.edu/centers/leaopold.newsletter/2001—1 leoletter/energy.html. (9/3/2002).
EPA, 2002, More Pollution Than They Said: Ethanol Plants Said Releasing Toxins: New York Times. May 3, 2002.
ERAB, 1980, Gasohol: Energy Research Advisory Board, U.S. Department of Energy. Washington, DC, 34p.
ERAB, 1981, Biomass Energy: Energy Research Advisory Board, U.S. Department of Energy. Washington, DC, 111p.
EV World, 2002, Republican Charges Price Fixing: EV World, People & Technology. Reuters, April 24, 2002. http://www. evworld.com/databases/shownews.cfm?pageid = news240402–07. (10/8/2002).
FAO, 1998, Food Balance Sheet: http://armanncorn:98ivysub@faostat.fao.org/lim...ap.pl? (10/10/1998)
FAO, 1999, Agricultural Statistics: http://apps.fao.org/cgi-bin/nph-db.pl?subset-agriculture_Food and Agriculture Organization, UN. (11/22/1999)
Ferguson, A., 2003, Implications of the USDA 2002 update on ethanol from corn: The Optimum Population Trust, Manchester, U.K., in press.
Fertilizer., 2002, Fertilizer Use and Abuse: Land Use and Environmental Change in the Thompson-Okanagan. http://royal.okanagan.bc.ca/mpidwin/agriculture/fertilizer.html.(9/3/ 2002).
Fuel's Gold., 2002, Fuel's Gold: ADM's Million-Dollar Soft Money Donations Help the Ethanol Tax Break Survive: http://www.commoncause.org/publications/fuelsgold_toc.htm. (9/18/2002).
Giampietro, M., Ulgiati, S., and Pimentel, D., 1997, Feasibility of large-scale biofuel production: BioScience, v. 47, no. 9, p. 587–600.
Hodge, C., 2002, Ethanol use in US gasoline should be banned, not expanded: Oil & Gas Journal, v. 100, no. 37, p. 20–30.
Hoffman, T. R., Warnock, W. D., and Hinman, H. R., 1994, Crop Enterprise Budgets, Timonthy-Legume and Alfalfa Hay, Sudan Grass, Sweet Corn and Spring Wheat under Rill Irrigation, Kittitas County, Washington: Farm Business Reports EB 1173, Pullman, Washington State Univ., 97p.
Hulsbergen, K. J., Feil, B., Bierman, S., Rathke, G. W., Kalk, W. D., and Diepenbrock, W., 2001, A method of energy balancing in crop production and its application in a long-term fertilizer trial: Agri., Ecosystems and Environ., v. 86, no. 4, p. 303–321.
Kim, Y., 2002, World exotic diseases, in Pimentel, D., ed., Biological Invasions: Economic and Environmental Costs of Alien Plant, Animal, and Microbe Species: CRC Press: Boca Raton, FL, p. 331–354.
Kuby, W. R., Markoja, R., and Nackford, S., 1984, Testing and Evaluation of On-Farm Alcohol Production Facilities: Acures Corporation, Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, OH. 100p.
Larsen, K., Thompson, D., and Harn, A., 2002, Limited and Full Irrigation Comparison for Corn and Grain Sorghum: http:// www.Colostate.edu/depts/prc/pubs/pl_pub.pdf. (9/2/2002).
Lieberman, B., 2002, The Ethanol Mistake: One Bad Mandate Replaced by Another: Competitive Enterprise Institute. http://www.nationalreview.com/comment/comment-lieberman031202.shtiml. (9/17/2002).
NAS, 2003, Frontiers in Agricultural Research: Food Health, Environment Communities: National Academy of Sciences, Washington, DC, 239p.
NASS, 1999, National Agricultural Statistics Service. Internet: http//usda.mannlib.cornell.edu. (8/30/2002).
National Center for Policy Analysis., 2002, Ethanol Subsidies: Idea House. National Center for Policy Analysis. http:://www.ncpa.org/pd/ag/ag6.html. (9/09/2002).
NPRA, 2002, NPRA Opposes Ethanol Mandate; Asks Congress not to Hinder Efforts to Maintain Supply: National Petrochemical & Refiners Association, Washington, DC. http://npradc.org/press/6–14–00.html. (9/17/2002).
Pimentel, D., 1980, Handbook of Energy Utilization in Agriculture: CRC press: Boca Raton, FL, 475p.
Pimentel, D., 1991, Ethanol fuels: Energy security, economics, and the environment: Jour. Agri. and Environ. Ethics v. 4, no. 1, p. 1–13.
Pimentel, D., 1998, Energy and dollar costs of ethanol production with corn: Hubbert Center Newsletter #98/2. M. King Hubbert Center for Petroleum Supply Studies, Colorado School of Mines, Golden, CO. 7p.
Pimentel, D., 2001, The limitations of biomass energy, in Encyclopedia on Physical Science and Technology: Academic Press, San Diego. CA. p. 159–171.
Pimentel, D., 2002, Soil erosion: a major environmental threat. manuscript.
Pimentel, D., and Pimentel, M., 1996, Food, Energy and Society: Colorado Univ. Press, Boulder, CO, 363p.
Pimentel, D., Bailey, O., Kim, P., Mullaney, E., Calabrese, J., Walman, L., Nelson, F., and Yao, X., 1999, Will the limits of the Earth's resources control human populations?: Environ., Develop., and Sust., v. 1, no. 1, p. 19–39.
Pimentel, D., Doughty, R., Carothers, C., Lamberson, S., Bora, N., and Lee, K., 2002, Energy inputs in crop production: comparison of developed and developing countries, in Lal, R., Hansen, D., Uphoff, N., and Slack, S., eds., Food Security & Environmental Quality in the Developing World. CRC Press, Boca Raton, FL, p. 129–151.
Pimentel, D., Harvey, C., Resosudarmo, P., Sinclair, K., Kurz, D., McNair, M., Crist, S., Sphritz, L., Fitton, L., Saffouri, R., and Blair, R., 1995, Environmental and economic costs of soil erosion and conservation benefits: Science v. 276, no. 5315, p. 1117–1123.
Pimentel, D., Houser, J., Preiss, E., White, O., Fang, H., Mesnick, L., Barsky, T., Tariche, S., Schreck, J., and Alpert, S., 1997, Water resources: agriculture, the environment, and Society: BioScience v. 47, no. 2, p. 97–106.
Pimentel, D., McLaughlin, L., Zepp, A., Kakitan, B., Kraus, T., Kleinman, P., Vancini, F., Roach, W. J., Graap, E., Keeton, W. S., and Selig, G., 1993, Environmental and economic effects of reducing pesticide use in agriculture: Agri. and Ecosystems Environ., v. 46, no 1–4, p. 273–288.
Pimentel, D., Warneke, A. F., Teel, W. S., Schwab, K. A., Simcox, N. J. Ebert, D. M., Baenisch, K. D., and Aaron, M. R., 1988, Food versus biomass fuel: socioeconomic and environmental impacts in the United States, Brazil, India, and Kenya: Adv. in Food Res., v. 32, p. 185–238.
PRB., 2001, World Population Data Sheet: Population Reference Bureau, Washington, DC, 2p.
Schneider, S. H., Rosencranz, A., and Niles, J. O., 2002, Climate Change Policy Change: Island Press, Washington, DC. 402p.
Shapouri, H., Duffield, J. A., and Wang, M., 2002, The Energy Balance of Corn Ethanol: An Update: USDA, Office of Energy Policy and New Uses, Agricultural Economics. Report No. 813, 14p.
Slesser, M., and Lewis, C., 1979, Biological Energy Resources: Halsted, New York, 192p.
Soil Fertility Guide, 2002, Soil Fertility Guide: http://www.gov. mb.ca/agriculture/soilwater/soilfert/fbd02s09.html. (9/2/2002).
Sparks Commodities, 1990, Impacts of the Richardson Amendment to H. R. 3030 on the U.S. Agricultural Sector: Sparks Commodities, Inc., McLean, Va. Washington, DC Division, 3p.
Spirits Low, 1999, Spirits Low as Brazil Alcohol Car in Trouble Anew: Reuters Limited, November 22, 1999.
Stanton, T. L., 1999, Feed Composition for Cattle and Sheep: Colorado State Univ., Cooperative Extension. Report No. 1.615, 7 p.
USBC, 2001, Statistical Abstract of the United States 2001: U.S. Bureau of the Census, U.S. Government Printing Office, Washington, DC, 987p.
USDA, 1991, Corn-State, Costs of Production: U.S. Department of Agriculture, Economic Research Service, Economics and Statistics System, Washington, DC, 133p. Stock #94018.
USDA, 1997a, 1997 Census of agriculture. U.S. Department of Agriculture. http://www.ncfap.org. (8/28/2002).
USDA, 1997b, Farm and Ranch Irrigation Survey, 1998: 1997 Census of Agriculture. v. 3, Special Studies, Part 1. 280p.
USDA, 2001, Agricultural Statistics: U.S. Department of Agriculture, Washington, DC. USDA. I—1—XV-34 p.
Wereko-Brobby, C., and Hagan, E. B., 1996, Biomass Conversion and Technology: John Wiley & Sons, Chichester, 203p.
WHO, 2000, Malnutrition Worldwide: http://www.who.int/nut/ malnutrition_worldwide.htm (7/27/2000).
Youngquist, W., 1997, GeoDestinies: The Inevitable Control of Earth Resources Over Nations and Individuals: National Book Company, Portland, OR. 499p.
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Pimentel, D. Ethanol Fuels: Energy Balance, Economics, and Environmental Impacts Are Negative. Natural Resources Research 12, 127–134 (2003). https://doi.org/10.1023/A:1024214812527
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DOI: https://doi.org/10.1023/A:1024214812527