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Environmental And Economic Impacts Of Soil Erosion And Fertility Mining In Northern Tanzania

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  • Nkonya, Ephraim M.
  • Barkley, Andrew P.
  • Hamilton, Stephen F.
  • Bernardo, Daniel J.

Abstract

This paper develops a soil conservation model that is relevant to smallholder farmers who apply little or no fertilizer. Empirical results drawn from northern Tanzania imply that, ignoring fertility mining problem in model specification leads to overestimation of profits for farms that apply little or no fertilizer. The model also shows that, the impact of output price on soil conservation efforts depends on the curvature of the soil erosion function.

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File URL: http://purl.umn.edu/21623
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Bibliographic 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 21623.

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Date of creation: 1999
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Handle: RePEc:ags:aaea99:21623

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Keywords: Soil erosion; Fertility mining; Soil conservation; Price policy; Soil erosion function; Sub-Saharan Africa; Tanzania.; Environmental Economics and Policy; Land Economics/Use;

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  1. repec:ltr:wpaper:1992.14 is not listed on IDEAS
  2. Harry R Clarke, 1992. "The Supply of Nondegraded Agricultural Land," Working Papers 1992.14, School of Economics, La Trobe University.
  3. Jeffrey T. LaFrance, 1992. "Do Increased Commodity Prices Lead To More Or Less Soil Degradation?," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 36(1), pages 57-82, 04.
  4. Barrett, Scott, 1991. "Optimal soil conservation and the reform of agricultural pricing policies," Journal of Development Economics, Elsevier, vol. 36(2), pages 167-187, October.
  5. Edward B. Barbier, 1990. "The Farm-Level Economics of Soil Conservation: The Uplands of Java," Land Economics, University of Wisconsin Press, vol. 66(2), pages 199-211.
  6. Renan U. Goetz, 1997. "Diversification in Agricultural Production: A Dynamic Model of Optimal Cropping to Manage Soil Erosion," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 79(2), pages 341-356.
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