How can sugarcane research in the Everglades Agricultural Area enable natural land managers and farmers to work together to reduce phosphorus and restore natural hydrology?

Poster presented May 1999, at the South Florida Restoration Science Forum

Poster presented by: Mr. Barry Glaz (Canal Point) and Dr. Jeff Ray (Gainesville), USDA-ARS

Part 1: Quantifying Water Management Effects in Sugarcane Production on Sustainability of Histosols in the EAA

Objective: Quantify the effects of alternative water management in production of sugarcane on soil subsidence.

Approach: Determine the effects of three water-table management practices on soil microorganisms. The effects of water-table management on soil microbial degradation of these substrates is indicative of the effects of water-table management on degradation of soil organic matter, subsidence, and sustainability of EAA Histosols. Water management consists of three water-table depths, WT 1 [6" (below soil surface)], WT 2 [15"], and WT 3 [24"].

Progress: We are currently 75% complete with the initial two-year study.

Data indicate reduced soil microbial activity with higher water tables.

(Click on image above for a full-sized version.)

Plans: Following the initial two-year study.....

• We will develop mathematical models which will allow prediction of water management effects on soil subsidence.
• We will incorporate these data with sugarcane yield data from varieties grown under the respective water management systems.

Related Links

USDA-ARS Sugarcane Field Station

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