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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

Evaluation of the Impacts of Alternative Citrus Production Practices on Groundwater Quality
Goals and Objectives
In some agricultural regions of Florida, the frequency of drinking water wells contaminated by nitrate nitrogen exceeds the national frequency found in the EPA survey conducted in 1990. Of 3,949 drinking water wells analyzed for nitrate-nitrogen by the Florida Department of Agriculture and Consumer Services (FDACS) and the Florida Department of Environmental Protection (FDEP), 2,483 (63%) contained detectable nitrate-nitrogen and 584 (15%) contained nitrate-nitrogen above the EPA MCL. Of the 584 wells statewide that exceeded the MCL, 519 were located in the Central Florida Ridge citrus growing region, encompassed primarily by Lake, Polk, and Highlands Counties.

The goals and objectives of this research project were to: (1) generate baseline groundwater nitrate data from several commercial citrus groves in the Central Florida Ridge region in order to relate current groundwater nitrate trends to existing and historic management practices; (2) develop recommendations for alternative nutrient and water management practices for each cooperator site intended to reduce off-site groundwater nitrate impacts associated with citrus production; and (3) assess the impacts of alternative management practices on groundwater nitrate-nitrogen through comprehensive monitoring and modeling.
Planned Outputs
Peer Reviewed Journal Articles
Theses and Dissertations
Available Outputs

Title: Impact of Alternative Citrus Management Practices on Groundwater Nitrate in the Central Florida Ridge: I. Field Investigation, Transactions ASABE VOL. 42(6): 1653-1668, 1999.
Authors: Lamb, S. T., Graham, W. D., Harrison, C. B. and A. K. Alva

Title: Impact of Alternative Citrus Management Practices on Groundwater Nitrate in the Central Florida Ridge: II. Numerical Modeling, Transactions ASABE, VOL. 42(6): 1669-1678, 1999.
Authors: Harrison, C. B., Graham, W. D., Lamb, S. T. and A. K. Alva
Project Lead
Graham, Wendy Dimbero
Project Participants
Graham, Wendy
Level 3: WI Directed Project
Water, Land Use and Ecosystems
Grant Award Dates
7/1/1992 to 12/31/2004