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ARS Home Northeast Area University Park, Pennsylvania Pasture Systems & Watershed Management Research Research Publications at this Location





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Title:   Author  item
                                            Church, Clintonitem
                                            Kleinman, Peteritem
                                            Bryant, Rayitem
                                            Saporito, Louis

                                                         - *Lou*item
                                            ALLEN, ARTHUR - UMES
  Submitted to: Journal of Environmental Quality
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 7/23/2010
                                    Publication  Date: 8/10/2010
                                    Citation: Church, C., Kleinman, P.J.A., Bryant, R.B., Saporito, L.S., Allen, A.L. 2010. Occurrence of arsenic and phosphorus in ditch flow from litter-amended soils and barn areas. Journal of Environmental Quality. Available: https://www.soils.org/files/publications/jeq/abstracts/39-6/q09-0210-abstract.pdf.Interpretive Summary: Arsenic is fed to poultry in the form of roxarsone, an organic additive. Recently, there has been concern about the fate of arsenic in poultry manure. This study elucidates the transfer of arsenic in runoff from ditch drained soils of the poultry producing region of the DelMarVa Peninsula, providing some of the first insight into the behavior of arsenic in agricultural soils. Results show that differences in the source of arsenic account for much of the variability seen in arsenic concentrations in runoff and inform the sustainable management of poultry manures for water quality protection.
                                Technical Abstract: Little is known about the fate of arsenic (As) in land applied litter from chickens that have been fed roxarsone, an organic feed additive containing As. This study seeks to elucidate the transfer of As in runoff from ditch drained soils of the poultry producing region of the Delmarva Peninsula by tracking As and phosphorus (P) export from seven drainage ditches over two water years (July 1, 2005 to June 30, 2007). Annual losses of As from ditches ranged from 0.003 to 0.140 kg ha**-1 while P losses ranged from 0.43 to 16.55 kg ha**-1, with the largest loads associated with a litter storage shed that served as a point source. Event-based As and P losses in ditch flow fluctuated by a factor of 162 and 1882, respectively. The two elements were correlated in flow from the ditch draining the litter storage shed (r =0.68), pointing to similar behavior under point source conditions. Indeed, As and P exhibited similar behavior within storms for all ditches, characterized by relatively high initial concentrations subject to rapid concentration declines prior to peak flow, consistent with dilution of a finite source. However, there was significant concentration differences between ditches and considerable temporal variability within ditches, with no clear seasonal trends or associations with current management strategies. Both similarities and dissimilarities in As and P behavior in ditch flow help to inform the sustainable management of poultry litter.


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