Lecture 3: P dynamics as related to soil morphology and composition II

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Explains phosphate bonding mechanisms, how soil components interact with P, P affinity of soil components, and how component distribution affects P dynamics.

• References
  • Chrysostome, M, V.D. Nair, W.G. Harris, and R.D. Rhue. 2007. Laboratory validation of soil phosphorus storage capacity predictions for use in risk assessment. Soil Sci. Soc. Am. J. 71:1564–1569.
  • Goldberg, S., and G. Sposito. 1984b. a chemical model of phosphate adsorption by soils: II. Noncalcareous soils. Soil Sci. Soc. Am. J. 48:779-783.
  • Johnston, C., and E. Tombacz. 2002. Surface chemistry of soils. p. 37-68. In J.B. Dixon and D. Schultz (eds.) Soil Mineralogy with Environmental Applications. Soil Sci. Soc. Am. Madison, WI.
  • Rhue, R.D., and Harris, W.G. 1999. Phosphorus sorption/desorption reactions in soils and sediments. p. 187-206. In K.R. Reddy, G.A. O'Connor, and C.L. Schelske (ed.) Phosphorus biogeochemistry in subtropical ecosystems.

Lecture 4: Soil & hydrologic factors affecting P transport

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Describes P transport in soil and how distribution of soil components in conjunction with drainage influences P transport.

• References
  • Allen, L.H., Jr. 1987. Dairy siting criteria and other options for wastewater management on high water table soils. Soil Crop Sci. Soc. Fla. Proc. 47:108 127.
  • Correll, D.L. 1998. The role of phosphorus in the eutrophication of receiving waters: a review. J. Environ. Qual. 27:261-266.
  • Harris, W.G., R.D. Rhue, G. Kidder, R.C. Littell, and R.B. Brown. 1996. Phosphorus retention as related to morphology of sandy coastal plain soils. Soil Sci. Soc. Am. J. 60:1513−1521.
  • Irick, D.I., Y.C. Li, P.W. Inglett, W.G. Harris, B. Gu, M.S. Ross, A.L. Wright, and K.W. Migliaccio. 2013. Characteristics of soil phosphorus in tree island hardwood hammocks of the Southern Florida Everglades. Soil Sci. Soc. Am. J. 77:1048-1056.
  • Mansell, R.S., S.A. Bloom, and P. Nkedi-Kizza. 1995. Phosphorus transport in Spodosols impacted by dairy manure. Ecol. Eng. 5:281-299
  • Nair, V.D., D.A. Graetz, and K.M. Portier. 1995. Forms of phosphorus in soil profiles from dairies of South Florida. Soil Sci. Soc. Am. J. 59:1244-1249.

Lecture 5: Risk-assessment implications of manure-amended, fertilizer-amended, and naturally-phosphatic soils 

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Explains the nature of naturally-phosphatic soils and how the form of P makes a difference in its potential fate.

• References
  • Harris, W.G., H.D. Wang, and K.R. Reddy. 1994. Dairy manure influence on soil and sediment composition: Implications for P retention. J. Environ. Qual. 23:1071-1081.
  • Harris, W.G. 2002. Phosphate minerals. p. 637-665. In J.B. Dixon and D. Schultz (eds.) Soil Mineralogy with Environmental Applications. Soil Sci. Soc. Am. Madison, WI.
  • Ramnarine, R. 2003. Predicting phosphatic soil distribution in Alachua County, Florida. MS thesis, University of Florida, Soil and Water Science Department, Gainesville, FL.
  • Wang, H.D., W.G. Harris, and T.L. Yuan. 1989. Phosphate minerals in some Florida phosphatic soils. Soil and Crop Soc. Fla. Proc. 48:49-55.

Next - Module 3: Use of Conventional Techniques for Evaluating Phosphorus in Soils