Praveen Kumar and Dong K. Woo, University of Illinois at Urbana-Champaign (image)

University of Illinois at Urbana-Champaign

Caption

Illinois professor Praveen Kumar and graduate student Dong K. Woo developed a model to tell the age of inorganic nitrogen in soil, which could help farmers more precisely apply fertilizer to croplands.

Credit

Photo by L. Brian Stauffer

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