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Economic And Environmental Benefits Of Variable Rate Application Of Nitrogen To Corn Fields: Role Of Variability And Weather

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Author Info
English, Burton C.
Mahajanashetti, S.B.
Roberts, Roland K.
Abstract

The use of meta-response functions based on EPIC-generated data resulted in comparisons between variable (VRAT) and uniform rate application technologies for 36 simulated fields. VRAT was more profitable and less nitrogen was lost to the environment in most cases. When spatial variability was small, uniform rate application techniques were adopted. However, when nitrogen use is restricted, VRAT is used on all simulated fields.

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Publisher Info
Paper provided by American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association) in its series 1999 Annual meeting, August 8-11, Nashville, TN with number 21533.

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Date of creation: 1999
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Handle: RePEc:ags:aaea99:21533

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Related research
Keywords: Precision farming; site-specific farming; spatial variability; nitrogen restriction; rainfall; EPIC; crop growth simulation model; meta-response functions; Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy;

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  1. Isik, Murat & Khanna, Madhu, 2002. "Variable-Rate Nitrogen Application Under Uncertainty: Implications For Profitability And Nitrogen Use," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 27(01), July. [Downloadable!]
  2. Popp, Jennie & Griffin, Terry, 2000. "Profitability Of Variable Rate Phosphorus In A Two Crop Rotation," 2000 Annual meeting, July 30-August 2, Tampa, FL 21806, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association). [Downloadable!]
  3. Isik, Murat & Khanna, Madhu, 2002. "Stochastic Technology, Risk Preferences And Adoption Of Site-Specific Technologies," 2002 Annual meeting, July 28-31, Long Beach, CA 19858, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association). [Downloadable!]
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