Impact of controlled drainage on subsurface drain flow and nitrate load: A synthesis of studies across the U.S. Midwest and Southeast

M. J. Helmers, L. Abendroth, B. Reinhart, G. Chighladze, L. Pease, L. Bowling, M. Youssef, E. Ghane, L. Ahiablame, L. Brown, N. Fausey, J. Frankenberger, D. Jaynes, K. King, E. Kladivko, K. Nelson, J. Strock