Thrust Areas Ecosystem Water Institute Classification Level
Water, Land Use and Ecosystems Water and Climate Water and Society Water Resources Sustainability Springs Wetlands Watersheds Aquifers Lakes Coastal Zone  Water Institute Classification 1  Water Institute Classification 2  Water Institute Classification 3  Water Institute Classification 4
     

Protocol Development of Evaluate the Effect of Water Table Management on Phosphorus Release to Drainage Water
Contract No:  74229
Goals and Objectives
 
A thorough understanding of potential P release from the soil profile is needed for implementing successful P management options such as phytoremediation or evaluating the efficacy of raising or lowering the water-table as a means of reducing P loss from a site. A body of literature is emerging that indicates raising the water table in upland soils, as proposed for reducing water and P load, releases adsorbed P from the soil into drainage water. Thus, best management practices (BMPs) designed to reduce P loads from upland soils through water-table manipulation may actually result in the opposite effect. In the current study, a threshold PSR for Bh horizons identified by the SAS program was 0.08 when using Mehlich 1 P, Fe and Al for PSR calculations. This threshold was not impacted by the P source, dairy or beef manure. Therefore using a PSR value of 0.08 as the threshold for the spodic horizon, the soil P storage capacity (SPSC) can be calculated. The SPSC will be a tool for determining whether it would be advantageous to raise or lower the water table at a given site as the parameter would provide an absolute indication of P release from the spodic horizon.
 
 
Available Outputs

Title: Compositional differences between Alaquods and Paleudults affecting phosphorus sorption-desorption behavior.
Authors: Chakraborty, D., V.D. Nair, and W.G. Harris.

Title: Environmentally-relevant phosphorus retention capacity of sandy coastal plain soils. Soil Sci. 177:701-707.
Authors: Chakraborty, D., V.D. Nair, W.G. Harris and R.D. Rhue

Title: Final Report: Protocol Development of Evaluate the Effect of Water Table Management on Phosphorus Release to Drainage Water
Authors: Nair, V.D., W.G. Harris, R.D. Rhue

Title: Phosphorus retention capacity of a pilot stormwater treatment area in the Lake Okeechobee Basin. ASA/CSSA/SSSA 2009 International Annual Meetings.
Authors: Wang, Y., K.R. Reddy, V.D. Nair, R.R. Villapando.

Title: Soil phosphorus storage capacity in manure-impacted Alaquods: Implications for water table management. Agric. Ecosyst. Environ. 142: 167-175. doi: 10.1016/j.agee.2011.04.019
Authors: Chakraborty, D., V.D. Nair, M. Chrysostome, and W.G. Harris.

Title: Tool to evaluate soil phosphorus release and potential effect on water quality. 2nd UF Water Institute Symposium. February, 2010, Gainesville, FL.
Authors: Chakraborty, D., V.D. Nair, W.G. Harris, and R.D. Rhue
Project Lead
Nair, Vimala D
 
Project Participants
Nair, Vimala D
 
Additional Participants
 
Willie Harris
Roy Rhue
 
EcoSystem:
Watersheds
 
 
ThrustArea: 
Water Resources Sustainability
 
Sponsor
FL DEPT OF AG AND CONSUMER SER
 
Grant Award Dates
7/12/2009 to 6/30/2010