Edge-of-field practices like bioreactors, buffers and wetlands filter a farm’s runoff before it reaches nearby waterways. Mitchell Hora and Zach Johnson bring on Professor Amy Kaleita from the Iowa State University Department of Agricultural and Biosystems Engineering to explain how edge of field practices work and who might be able to install them on their land. Farmer Mike Ehlers also joins the show to talk about his experience installing a bioreactor and why conservation practices are important to him. Also included: kayaking in drainage ditches, magic wood chips, and a dead zone in the Gulf of New Mexico.