The Potash & Phosphate Institute (PPI).

The Potash & Phosphate Institute (PPI), Norcross, Ga., quick in emergenciesed the 2002-2003 Robert E. Wagner award to brace agronomic scientists. Dr. John L Havlin, professor and head of the Department of Soil Science, North Carolina State University, was honored in the senior scientist category. Dr Newell R Kitchen, soil scientist

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