Organic and diverse cropping systems outperformed conventional Corn/Soy rotations in these three-year water quality studies; conventional systems lost nearly twice the leached nearly twice the N than organic systems. ”Results of this study suggest that organic farming practices, such as the application of composted animal manure and the use of forage legumes and green manures within extended cropping rotations, can improve water quality in Midwestern subsurface-drained landscapes.”