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Runoff Phosphorus Losses as Related to Phosphorus Source, Application Method, and Application Rate on a Piedmont Soil

David D. Tarkalsona,* and Robert L. Mikkelsenb

a Department of Agronomy and Horticulture, University of Nebraska–Lincoln, West Central Research and Extension Center, 461 West University Drive, North Platte, NE 69101
b Department of Soil Science, North Carolina State University, Campus Box 7619, Raleigh, NC 27695



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  		Fig. 1. Relationship between surface P application rate of broiler litter and inorganic P fertilizer and the reactive phosphorus (RP), algal-available phosphorus (AAP), and total phosphorus (TP) flow-weighted concentrations in runoff from a Cecil clay loam. Each point is the average of three flow-weighted replications. Bars represent the standard errors for the treatment means.

 


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  		Fig. 2. Relationship between surface P application rate of broiler litter and inorganic P fertilizer and the reactive phosphorus (RP), algal-available phosphorus (AAP), and total phosphorus (TP) mass losses in runoff from a Cecil clay loam. Each point was summed over the six sampling times for 30 min and averaged over three replications. Bars represent the standard errors for the treatment means.

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
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Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
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