Atrazine is the most widely used herbicide for corn and sorghum and the most commonly encountered in surface water and groundwater. In addition to water quality problems, atrazine poses hazards through atmospheric transport, food residues, and exposure of applicators and wildlife. It atrazine...

over potential sources of environmental degradation (see, for example, Shortle and Dunn 1986; Russell and Shogren 1993). Although partially related to scientific advances in measurement and detection, perceived risks due to chemical loading have intensified the pressure to more closely coordinate...

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...

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...

To evaluate the impact of conservation policies on soil organic carbon in agricultural soils, the authors link information from the 1992 National Resources Inventory (NRI) database and the extensive physical data on soils and climate from the SOILS5 database. These data serve as input for a...

Congress has wrestled with the issue of which land should be enrolled in a renewal of the Conservation Reserve Program (CRP), considering that benefits to wildlife from CRP are substantial. This paper evaluates the amount of land that may qualify for CRP enrollment in order to provide high-value...

CRP (Conservation Reserve Program) renewal may depend on improved targeting of payments to maintain a significant portion of existing environmental and farm benefits at a reduced program cost. The authors consider three alternative renewal criteria: renewal of least expensive land first, renewal...

The Central Nebraska Basin (CNB) is the site of intensive agricultural activity, in part because of the good irrigation supplies provided by the Middle Platte alluvial aquifer system. In this paper, the authors describe the integrated modeling system that addresses the economic and environmental...

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...