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Title: Dynamics of NH₄and NO₃in cropped soils irrigated with wastewater : a field study
Authors: Iskandar, I. K. (Iskandar Karam), 1938-
Parker, L. V. (Louise V.)
McDade, C.
Atkinson, J.
Edwards, A.
Keywords: Field tests
Soil nitrogen
Land treatment
Waste water
Nitrogen cycle
Waste disposal
Water treatment
Soil chemistry
Nutrient cycle
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 80-27.
Description: Special Report
Abstract: The objectives of this field study were 1) to obtain information on the dynamic behavior of wastewater NH₄and NO₃in soils, 2) to determine the relative abundance of NH₄and NO₃in soils receiving wastewater, and 3) to evaluate the seasonal effect on the fate of wastewater NH₄applied to soils in a slow infiltration system. The study was conducted using an ongoing test plot which contained two soil types and was covered with forage grass. Samples were collected in June and October to study the seasonal effect on the dynamic of N. The concentrations of NH₄and NO₃in the soil reached a daily, quasi-steady state condition. The seasonal effect on the relative amounts of NH₄and NO₃, however, was significant. The vertical distribution of NH₄and NO₃was similar but there was always more NH₄than NO₃. The concentrations of both NH₄and NO₃in soil profile were high at the surface and decreased with depth, consistent with the higher CEC, the slow movement of NH₄in soils, and the higher organic matter content in the surface. Both NH₄and NO₃concentrations were higher in the finer texture, Charlton silt loam soil than in the coarser texture Windsor sandy loam soil.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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