Global food systems have dramatically altered biogeochemical cycles, contributing to climate change and eutrophication of waterways. Growing concern about agriculture's environmental impacts is increasing demand for citizens, scientists, and policymakers who have in-depth knowledge of more sustainable agroecosystem management approaches. We will focus on how management impacts carbon (C), nitrogen (N), and phosphorus (P) cycles from soil-plant to global scales. The course links theory and practice, and domestic and international examples, to discuss the complex challenges of sustainable food production, with an emphasis on applying ecological principles to soil fertility management. Students will develop skills using this knowledge in applied settings.