Informed debate on agricultural nonpoint pollution requires evaluation of regional water quality in relation to management practices. It is prohibitive, in terms of cost and time, to run the site-specific process models for regional policy analysis. Therefore, a simplified and robust...

The livestock and dairy industries are consolidating and concentrating within confined geographical areas. Accompanying these structural adjustments that are under way in the dairy and livestock industries is the potential for increased point and nonpoint source pollution problems from animal...

The management practices farmers choose have significant effect on agricultural pollution. The authors analyze the adoption of alternative combinations of conservation practices and their impacts on fertilizer use, corn yield, and soil erosion in the Central Nebraska Basin, using a...

Described in this report is the application of an integrated agro-ecological modeling system that has been constructed around Agriculture Canada's Canadian Regional Agriculture Model (CRAM) to analyze the economic and environmental impacts of proposed agricultural policies for Alberta,...

This report estimates the economic and environmental trade-offs of the 1995 Farm Bill policy options evaluated by FAPRI. Assessments are provided for the 1995 FAPRI baseline, 25 percent Normal Flex, and the Revenue Assurance program. The authors describe the modeling systems and the CEEPES-FAPRI...

Over the past decade, conservation compliance has reduced soil erosion. What will happen to these erosion benefits if commodity programs are eliminated or if the subsidy level is greatly reduced? This study investigates whether there will be a significant decline in the amount of acreage on...

The authors discuss the problem of designing computer simulation experiments that require generating data for just a fraction of the possible input combinations. The paper outlines spatial sampling schemes for agricultural conjoint source pollution assessment using biogeophysical model...

The public and the agricultural community are concerned with the impact of agrichemical use on the environment. Of particular concern is the impact of pesticides and nitrogen on the quality of surface and ground waters (Nielson and Lee 1987). Although a national effort is under way to address...

The policies restricting the use of atrazine and other triazines to achieve desirable water quality standards are analyzed in a CEEPES framework. Five policies, including atrazine post restriction, restricting atrazine to meet MCL and HAL standards in runoff, a complete ban on atrazine, and also...

An environmental modeling system is being constructed around the EPIC model that will be interfaced with an economic component (RS-CRAM) within an integrated modeling system to analyze agricultural policies such as GRIP for western Canada. A description of the major EPIC subcomponents is...