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

Lee A. Christensen and David E. McElyea

No 278502, 1986 Annual Meeting, July 27-30, Reno, Nevada from American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association)

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.

Keywords: Agricultural and Food Policy; Crop Production/Industries; Farm Management (search for similar items in EconPapers)
Pages: 16
Date: 1986-07
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Persistent link: https://EconPapers.repec.org/RePEc:ags:aaea86:278502

DOI: 10.22004/ag.econ.278502

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