HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Reddy, K. R. Articles by Gale, P. M. Search for Related Content PubMed Articles by Reddy, K. R. Articles by Gale, P. M. Agricola Articles by Reddy, K. R. Articles by Gale, P. M.

Phosphorus Sorption Capacities of Wetland Soils and Stream Sediments Impacted by Dairy Effluent

Soil and Water Science, P.O. Box 110510, Univ. of Florida, Inst. of Food and Agric. Science, Gainesville, FL 32611.

^* Corresponding author (krr{at}ognv.ifas.ufl.edu).

ABSTRACT

The ability of stream sediments and adjacent wetlands to retain added P depends on the P sorption capacity and physico-chemical properties of sediments or wetland soils. The objectives of this study were to: (i) determine the potential P sorption capacities of wetland soils and stream sediments in systems with distinctly different P loadings, and (ii) establish the relationship between P sorption capacity and selected physico-chemical properties. Batch sorption isotherms were measured under aerobic and anaerobic conditions for sediments and wetland soils along a stream-wetland-upland continuum at two sites in the Lower Kissimmee River Basin and Taylor Creek/Nubbin slough of the Okeechobee Basin, Florida. Soluble P and equilibrium P concentrations (EPC) of stream sediments generally decreased along the wetland-upland continuum. The EPC values were about twofold greater under anaerobic conditions than aerobic conditions; however, P sorption capacities decreased by about 35% under anaerobic conditions compared with aerobic conditions. The P sorption maxima, estimated by a single point isotherm measured at an added P level of 1000 mg P kg^–1. correlated well with Langmuir adsorptive maxima. Phosphorus retention by stream sediments and wetland soils was strongly correlated with contents of amorphous and poorly crystalline forms of Fe and Al, which explained 87% of the variability in P retention maximum. Addition of total organic C to predictive equations improved the predictability by only 5%.

Contribution of the Florida Agric. Exp. Stn. Journal Series No. R-05859.

Received for publication December 6, 1996.

This article has been cited by other articles:

				M. I. Litaor, O. Reichmann, A. Haim, K. Auerswald, and M. Shenker Sorption Characteristics of Phosphorus in Peat Soils of a Semiarid Altered Wetland Soil Sci. Soc. Am. J., August 25, 2005; 69(5): 1658 - 1665. [Abstract] [Full Text] [PDF]

				R. C. Schwartz and T. H. Dao Phosphorus Extractability of Soils Amended with Stockpiled and Composted Cattle Manure J. Environ. Qual., April 20, 2005; 34(3): 970 - 978. [Abstract] [Full Text] [PDF]

				A. Liikanen, M. Puustinen, J. Koskiaho, T. Vaisanen, P. Martikainen, and H. Hartikainen Phosphorus Removal in a Wetland Constructed on Former Arable Land J. Environ. Qual., May 1, 2004; 33(3): 1124 - 1132. [Abstract] [Full Text] [PDF]

				N. Khare, D. Hesterberg, S. Beauchemin, and S.-L. Wang XANES Determination of Adsorbed Phosphate Distribution between Ferrihydrite and Boehmite in Mixtures Soil Sci. Soc. Am. J., March 1, 2004; 68(2): 460 - 469. [Abstract] [Full Text] [PDF]

				H.K. Pant, V.D. Nair, K.R. Reddy, D.A. Graetz, and R.R. Villapando Influence of Flooding on Phosphorus Mobility in Manure-Impacted Soil J. Environ. Qual., July 1, 2002; 31(4): 1399 - 1405. [Abstract] [Full Text] [PDF]

				T. Rennert and T. Mansfeldt Sorption of Iron-Cyanide Complexes in Soils Soil Sci. Soc. Am. J., March 1, 2002; 66(2): 437 - 444. [Abstract] [Full Text] [PDF]

				P. Lu and G. A. O'Connor Biosolids Effects on Phosphorus Retention and Release in Some Sandy Florida Soils J. Environ. Qual., May 1, 2001; 30(3): 1059 - 1063. [Abstract] [Full Text] [PDF]

				R.R. Villapando and D.A. Graetz Phosphorus Sorption and Desorption Properties of the Spodic Horizon from Selected Florida Spodosols Soil Sci. Soc. Am. J., March 1, 2001; 65(2): 331 - 339. [Abstract] [Full Text] [PDF]

				M. C. Pautler and J.T. Sims Relationships Between Soil Test Phosphorus, Soluble Phosphorus, and Phosphorus Saturation in Delaware Soils Soil Sci. Soc. Am. J., March 1, 2000; 64(2): 765 - 773. [Abstract] [Full Text]