At a field day near Slater, Iowa, landowners, farmers, and ag experts discuss which tools to implement on the farm that help reduce nitrate leaching. Two options at the edge of fields that address nutrient concerns in surface water runoff are saturated buffers and woodchip bioreactors.

In addition to these edge-of-field practices, cover crops help fix nitrogen in the soil and Rantizo, a drone spraying platform start-up, is equipped to apply cover crop seed with its swarms of drones.​ (…)