Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

The Dual Nature of Nonpoint Agricultural Pollution: Farm Level Production Decisions and Site Characteristics

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Pp. 232-243 in Total Maximum Daily Load (TMDL) Environmental Regulations: Proceedings of the March 11-13, 2002 Conference, (Fort Worth, Texas, USA)  701P0102.(doi:10.13031/2013.7563)
Authors:   M. E. Renwick, J. L. Anderson, and D. J. Mulla

Agricultural nonpoint source pollution (NPS) is a significant problem in the Minnesota River Basin. Policy makers increasingly demand information on the economic and environmental implications of alternative production practices to inform policy formulation. Establishment of TMDLs for specific stream stretches is an important policy decision, with significant economic and political ramifications. Pollution from agricultural sources depends both on production practices and site conditions (soil type, hydrological characteristics, etc). Identifying and measuring linkages between production decisions, profits, and water quality is a challenging area of research given the dual nature of the problem. Effective TMDLs must reflect this dual nature. This talk examines the linkages between producer decisions, site characteristics, and water pollution by integrating agronomic, hydrologic, and economic models of farm-level processes focusing on tillage practices and sediment loads. Conventional and conservation tillage practices are evaluated. The analysis relies on detailed crop production and water quality data for a watershed located in the Lower Minnesota River Basin.

(Download PDF)    (Export to EndNotes)