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Phosphorus Saturation in Spodosols Impacted by Manure

V.D. Nair* and D.A. Graetz

Soil and Water Science Dep., 106 Newell Hall, P.O. Box 110510, Univ. of Florida, Institute of Food and Agricultural Sciences, Gainesville, FL 32611-0510



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  		Fig. 1. Relationships between water-soluble P and DPS-1 (double acid–extractable P/oxalate-extractable Fe and Al) and DPS-2 (double acid–extractable P/double acid–extractable Fe and Al) for soils of the A and Bh horizons of Spodosols.

 


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  		Fig. 2. Relationships between DPS-1 (double acid–extractable P/oxalate-extractable Fe and Al) and DPS-2 (double acid–extractable P/double acid–extractable Fe and Al) for soils of the A and Bh horizon of Spodosols.

 


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  		Fig. 3. The Langmuir P sorption maximum (Smax) as a function of oxalate-extractable Fe and Al (OxFe + OxAl).

 


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  		Fig. 4. The DPS-1 (double acid–extractable P/oxalate-extractable Fe and Al) values within a soil profile (A, E, Bh, and Bw horizons) of intensive and holding area (highly impacted by manure) soils for active and abandoned dairies.

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2002 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.