Impacts of Ethanol on Planted Acreage in Market Equilibrium
Land use impacts of biofuel expansion have attracted a tremendous amount of attention because of the implications for the climate, the environment, and the food supply. To examine these impacts, we set up an economic framework that links input use and land allocation decisions with ethanol and agricultural commodity markets. Crops can be substitutes or complements in supply depending on the relative magnitude of three effects of crop prices: total cropland effect, land share effect, and input use effect. We show that with unregulated free markets, total cropland area increases with corn prices whether crops are substitutes or complements in supply. Similarly, higher corn yields from exogenous technical changes lead to cropland expansion. The impacts of yield increases for other crops are ambiguous. With a quantity mandate for ethanol, higher mandates mean larger cropland area if corn and other crops are substitutes in demand. For a given mandate, yield improvement causes total cropland to expand if crop demand is elastic enough, or to contract under a very general condition if crop demand is sufficiently inelastic.
|Date of creation:||Jun 2008|
|Date of revision:|
|Contact details of provider:|| Postal: 578 Heady Hall, Ames, Iowa 50011-1070|
Phone: (515) 294-1183
Fax: (515) 294-6336
Web page: http://www.card.iastate.edu/
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- David A. Hennessy, 2006.
"On Monoculture and the Structure of Crop Rotations,"
American Journal of Agricultural Economics,
Agricultural and Applied Economics Association, vol. 88(4), pages 900-914.
- David A. Hennessy, 2004. "On Monoculture and the Structure of Crop Rotations," Center for Agricultural and Rural Development (CARD) Publications 04-wp369, Center for Agricultural and Rural Development (CARD) at Iowa State University.
- Hennessy, David A., 2004. "On Monoculture and the Structure of Crop Rotations," Staff General Research Papers Archive 12004, Iowa State University, Department of Economics.
- Keeney, Roman & Hertel, Thomas, 2008. "The Indirect Land Use Impacts of U.S. Biofuel Policies: The Importance of Acreage, Yield, and Bilateral Trade Responses," GTAP Working Papers 2810, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Carlos Arnade & David Kelch, 2007. "Estimation of Area Elasticities from a Standard Profit Function," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 89(3), pages 727-737.
- Miranowski, John & Orazem, Peter, 1994. "A Dynamic Model of Acreage Allocation with General and Crop-Specific Capital," Staff General Research Papers Archive 10695, Iowa State University, Department of Economics.
- Feng, Hongli & Rubin, Ofir D. & Babcock, Bruce A., 2008. "Greenhouse Gas Impacts of Ethanol from Iowa Corn," Lifecycle Carbon Footprint of Biofuels Workshop, January 29, 2008, Miami Beach, Florida 49101, Farm Foundation.
- Searchinger, Timothy & Heimlich, Ralph & Houghton, R. A. & Dong, Fengxia & Elobeid, Amani & Fabiosa, Jacinto F. & Tokgoz, Simla & Hayes, Dermot J. & Yu, Hun-Hsiang, 2008. "Use of U.S. Croplands for Biofuels Increases Greenhouse Gases Through Emissions from Land-Use Change," Staff General Research Papers Archive 12881, Iowa State University, Department of Economics.
When requesting a correction, please mention this item's handle: RePEc:ias:cpaper:08-wp472. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.