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United States Department of Agriculture

Agricultural Research Service


Water Management and Conservation Research


Cooperative Research Projects:

Effect of Redox, Ph and Microbes on the Survival of Bullrush in a Constructed Wetland Treatment System for Sewage Effluent

Objective:

Determine whether the pH and in situ oxidation-reduction (redox) potential of the water sediment interface and rooting zone of the Tres Rios Hayfield H1 Site at the 91st Ave. treatment plant in Phoenix are the cause of unhealthy bullrush populations and whether this has any effect on water quality of effluent.

 

Evaluation of Arizona's Interim Best Management Practice Program for Water Conservation

Objective:

Develop initial measures of performance for the State of Arizona's interim BMP-based agricultural water conservation program. Findings will be used by the State of Arizona to judge program merits relative to the current regulatory approach and guide future policy development. The analysis will examine both technical and institutional aspects of the program.

 

Optimal Land Surface Temperature Estimation and Assimilation for Global Hydrological Applications

Objective:

The research seeks development of surface temperature observations sufficiently accurate for land surface model assimilation. The main objectives are: (1) Create and assimilate optimized and gridded hourly surface temperatures from recent satellite archives; (2) assess the adequacy of the operational MODIS LST product for model data assimilation; and (3) test dynamically constructed surface temperature products utilizing current MODIS and geostationary satellite data.

 

Evaluation of Level-Basin Irrigation in High-Rainfall Zones

Objective:

To evaluate the performance of precision-graded, zero-slope level-basin irrigation systems as practiced in Louisiana, including seasonal water use, yield, water advance, and surface drainage (for irrigation water and rainfall) on rice and row crops (e.g., soybeans, corn, etc.) in comparison to traditional surface irrigation and precision-graded fields with slope.

 

Survival of Bullrush in a Constructed Wetland Treatment System for Sewage Effluent As Affected by Redox, Ph and Microbes

Objective:

Determine the pH and in situ oxidation-reduction (redox) potential of the water sediment interface and rooting zone of the Tres Rios Hayfield H1 Site at the 91st Avenue treatment plant in Phoenix and to compare those values with similar measurements in wetland treatment sites in Hemet, California where bullrush populations have remained healthy and to monitor changes in microbial populations in the sediments at the Phoenix site.

 


Last Modified: 8/28/2006