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Published online 27 October 2006
Published in J Environ Qual 35:2178-2185 (2006)
DOI: 10.2134/jeq2005.0351
© 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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Ground Cover Impacts on Sediment and Phosphorus Export from Manured Riparian Pasture

David M. Butlera, Dorcas H. Franklinb,*, Noah N. Ranellsa, Matthew H. Poorec and James T. Green, Jr.a

a Department of Crop Science, North Carolina State University, Box 7620, Raleigh, NC 27695
b USDA-ARS, J. Phil Campbell Sr. Natural Resource Conservation Center, 1420 Experiment Station Road, Watkinsville, GA 30677
c Department of Animal Science, North Carolina State University, Box 7621, Raleigh, NC 27695


Figure 1
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  		Fig. 1. Mean volume of 30 min of runoff as affected by cover, averaged across sites (means within the same rain event indicated by the same letter are not significantly different; capital letters indicate differences among the means of all rain events, P > 0.05).

 

Figure 2
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  		Fig. 2. Mean cumulative dissolved reactive phosphorus (DRP) export during 30 min of runoff as affected by rain event, averaged across sites (means within the same cover level indicated by the same letter are not significantly different, P > 0.05). The down arrow indicates application of cattle feces and urine.

 

Figure 3
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  		Fig. 3. Mean cumulative dissolved reactive phosphorus (DRP) export during 30 min of runoff as affected by cover, averaged across sites (means within the same rain event indicated by the same letter are not significantly different; capital letters indicate differences among the means of all rain events, P > 0.05). The arrow pointing right indicates application of cattle feces and urine.

 

Figure 4
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  		Fig. 4. Mean cumulative total Kjeldahl phosphorus (TKP) export during 30 min of runoff as affected by cover, averaged across sites (bars indicated by the same letter are not significantly different, P > 0.05). The arrow pointing right indicates application of cattle feces and urine.

 




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