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TIAER and Tarleton State University published in JAWRA

The works of Assistant Professor in the College of Agricultural and Consumer Sciences, Dr. Edward Osei, and Assistant Professor of Accounting, Finance, and Economics at Tarleton State University, Dr. Alexander Tanter, along with Lead Scientist of the Texas Institute for Applied Environmental Research’s (TIAER) Dr. Larry Hauck, and Bing Du (formally with TIAER) been published in the Journal of American Water Resources Association.  The group’s work, entitled Farm-Level Economic And Water Quality Impacts of Comprehensive Nutrient Management Plan Implementation in the Ohio River Basin, provides an assessment of comprehensive nutrient management plans (CNMPs) as a tool for addressing nonpoint nutrient and sediment losses from the animal feeding operations (AFOs) in the Ohio River Basin. 

To determine the aggregate economic and water quality impacts of CNMP implementation on AFOs in the entire basin, the group employed a macro modeling system, the Comprehensive Economic and Environmental Optimization Tool – Macro Modeling System (CEEOT – MMS), created by the TIAER at Tarleton State University in Stephenville, Texas.  The CEEOT – MMS has been used successfully to evaluate manure nutrient management practices in AFOs in the state of Texas and across the United States. 

In this study, the modeling system was applied to simulate CNMPs that would typically be implemented on farms in the Ohio River Basin, which encompasses 11 states in the east central portion of the United States (461 counties).  The Ohio River Basin covers an area of 522,000 km2 (Figure 1).      


The results of the study suggest that the implementation of farm-level CNMPs will result in a noticeable decline in sediment losses and nitrogen and phosphors losses.  Further, the study suggests that producers may require technical and financial assistance for successful implementation of CNMPs.

This study was funded by the U.S. Environmental Protection Agency, Office of Policy, Economics and Innovation and Office of Wastewater Management.   

For more information about the study, contact TIAER at  or (254) 968- 9567.  To view the publication in JAWRA, visit: