Welcome to the Iowa State University Agronomy Extension Soil Management/ Environment Web Page. This Web page provides research-based information and current Extension and Research projects on tillage and cropping systems, soil carbon sequestration, residue management, and cover crops. Extension publications, newsletter articles, refereed journal articles, and relevant links are listed under each area of interest. Several management tools are listed, including residue and erosion calculators and other decision-making tools. The materials on this Website are intended for public use with proper credit to the authors and Iowa State University Agronomy Extension in using these materials for educational and research purposes.