Trace elements in soils fertilized with poultry litter
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1School of Agricultural and Natural Sciences, University of Maryland Eastern Shore, Princess Anne 21853, USA. gcgupta@mail.umes.edu
Abstract:
Poultry litter is used on agricultural land because of its high nutrient content. The litter contains trace elements. With land application of litter, these elements may accumulate in the soil or plants, may be transported as run-off to surface water, or may be leached into groundwater. The objective of this research was to measure the concentrations of trace elements in soils fertilized with poultry litter. Soil was collected from three agricultural farms in Wicomico County, MD. These farms had a long history of poultry litter application. A nitric acid extraction was performed on soil samples collected to a depth of 60 cm. The concentrations of As, Cd, Cu, Mn, Pb, and Zn were determined using atomic absorption spectrophotometry. Arsenic, Cd, Cu, and Mn concentrations were higher in the manured fields than in the control fields. Lead and Zn concentrations did not significantly change with the application of poultry litter.
