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AMES, Iowa – When can we expect to see reduced levels of nutrients in our water if we make positive changes on the landscape? New Iowa State University research shows how complicated it is to give a sound answer to that question.

The research is featured in a recent article in the peer-reviewed Journal of Environmental Quality, co-authored by Ph.D. student Gerasimos J. Danalatos, Professor Michael Castellano and Associate Professor Sotirios V. Archontoulis, in Iowa State’s Department of Agronomy, and Calvin Wolter, a Geographic Information Systems analyst with the Iowa Department of Natural Resources.