Abstract
This study will investigate how cover crops and nitrogen fertilizer rates impact agronomic performance and environmental outcomes in corn and soybean fields in central Minnesota. The research incorporates two varieties of cover crops, winter rye, a nitrogen scavenger, and kura clover, a nitrogen fixer, in combination with varying fertilizer rates. Key factors such as crop grain yield, nitrate leaching, and nitrogen cycling in the environment will be assessed for each treatment. Additionally, isotopically enriched fertilizer will be used to trace nitrogen movement across crop, soil, water, and gas samples collected from crop fields. Ultimately, this study aims to provide insights that help farmers and landowners adopt sustainable land management practices in Minnesota agroecosystems. This research will contribute valuable insights into sustainable agricultural practices that balance productivity with environmental stewardship.