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Published online 27 October 2006
Published in J Environ Qual 35:2229-2235 (2006)
DOI: 10.2134/jeq2006.0112
© 2006 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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Source-Related Transport of Phosphorus in Surface Runoff

Francirose Shigakia, Andrew Sharpleyb,* and Luís Ignácio Prochnowa

a Dep. Ciência do Solo, ESALQ, Univ. of São Paulo, Piracicaba, SP, Brazil
b USDA-ARS, Pasture Systems and Watershed Management Research Unit, Curtin Rd., University Park, PA 16802 USA


Figure 1
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  		Fig. 1. Location, field boundaries, and soil types of the FD-36 watershed, Northumberland County, PA and field overland flow sites for this study.

 

Figure 2
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  		Fig. 2. Schematic representation of the portable rainfall simulator, showing paired 1 by 2 m surface runoff plots, and water collection system. The nozzle is situated approximately 245 cm above the plots.

 

Figure 3
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  		Fig. 3. Relationship between percent of P source total P as water-soluble P and the dissolved reactive and total P concentration of surface runoff averaged for all three soils and rainfall-runoff events.

 




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