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Phytase Supplementation and Reduced-Phosphorus Turkey Diets Reduce Phosphorus Loss in Runoff following Litter Application

R. O. Maguirea,*, J. T. Simsb and T. J. Applegatec

a Department of Soil Science, North Carolina State University, Raleigh, NC 27695
b Department of Plant and Soil Science, University of Delaware, Newark, DE 19716
c Department of Animal Sciences, Purdue University, West Lafayette, IN 47907



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  		Fig. 1. Concentration of dissolved reactive phosphorus in runoff water from soils amended with turkey litter or triple superphosphate on (a) Day 1 and (b) Day 7. Means followed by different letters are significantly different at the 0.05 probability level.

 


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  		Fig. 2. Influence of water-soluble phosphorus applied to soils analyzed at (a) 1:10 and (b) 1:200 litter to water extraction ratios on Day 1 dissolved reactive phosphorus losses in runoff. The triple superphosphate (TSP) treatment is omitted to show impact of diet modification.

 


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  		Fig. 3. Concentration of total phosphorus lost in runoff from the three soils amended with turkey litters or triple superphosphate on (a) Day 1 and (b) Day 7. Means followed by different letters are significantly different at the 0.05 probability level.

 




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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 © 2005 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.