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Towards a General Method of Estimating Productivity-Soil Depth Response Relationships

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  • Christensen, Lee A.
  • McElyea, David E.

Abstract

Four functional forms were investigated to determine their usefulness in estimating the relationship between soil erosion and crop yields. These functional forms were linear, polynomial, Cobb-Douglas, and Hitscherlich- Spillman. The Mitscherlich-Spillman is shown to better meet the theoretical requirements. A variable defined as the mechanical composition of the plant rooting zone is shown to be a superior predictor variable to topsoil depth. Soybean yield data for Georgia Cecil soils were fitted to a Mitscherlich- Spillman function.

Suggested Citation

  • Christensen, Lee A. & McElyea, David E., 1986. "Towards a General Method of Estimating Productivity-Soil Depth Response Relationships," 1986 Annual Meeting, July 27-30, Reno, Nevada 278502, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
    • Handle: RePEc:ags:aaea86:278502
    DOI: 10.22004/ag.econ.278502
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    References listed on IDEAS

    as
    1. David J. Walker, 1982. "A Damage Function to Evaluate Erosion Control Economics," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 64(4), pages 690-698.
    2. Kenneth E. McConnell, 1983. "An Economic Model of Soil Conservation," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 65(1), pages 83-89.
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