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Published online 20 April 2005
Published in J Environ Qual 34:890-896 (2005)
DOI: 10.2134/jeq2004.0176
© 2005 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Phosphate Adsorption by Ferrihydrite-Amended Soils

F. E. Rhotona,* and J. M. Bighamb

a USDA-ARS, National Sedimentation Laboratory, 598 McElroy Drive, Oxford, MS 38655
b School of Natural Resources, Ohio State University, Columbus, OH 43210



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  		Fig. 1. X-ray diffraction pattern of the ferrihydrite specimen used to amend the soil samples showing two-line ferrihydrite (0.25 and 1.5 nm), goethite (G), and quartz (Q).

 


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  		Fig. 2. Final P concentrations in solution as a function of ferrihydrite amendment rate and initial P concentrations for the Amarillo, Gomez, and Olton soils.

 


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  		Fig. 3. Final P concentrations in solution as a function of ferrihydrite amendment rate and initial P concentrations for the Grenada and Routon soils.

 




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