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Modeling Animal And Forage Response To Fertilization Of Annual Rangelands

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  • Olson, Kent D.
  • Mikesell, Chris L.
  • Raguse, Charles A.
  • George, Melvin R.
  • Taggard, Ken L.

Abstract

The response functions for forage, animal gain, and stocking rate were estimated from data obtained in a three-year fertilization experiment on California annual range. Degree-days; the interactions between degree-days and nitrogen, between degree-days and phosphorus-sulphur, and between nitrogen and phosphorus-sulphur; and the lagged forage variable were significant in explaining the variations in forage growth, animal gain, and stocking rate. The impact of PS was more important in interaction with DD or N than by itself. The correct impact of moisture was not found due to misspecification of the variable in the model. The models for the first year and the three years combined were well behaved; however, the models for the last two years combined neither explained adequately nor behaved well.

Suggested Citation

  • Olson, Kent D. & Mikesell, Chris L. & Raguse, Charles A. & George, Melvin R. & Taggard, Ken L., 1988. "Modeling Animal And Forage Response To Fertilization Of Annual Rangelands," Staff Papers 13735, University of Minnesota, Department of Applied Economics.
    • Handle: RePEc:ags:umaesp:13735
    DOI: 10.22004/ag.econ.13735
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    Keywords

    Livestock Production/Industries;

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