Illinois Fertilizer Conference Proceedings January 24-26, 2005 Home 2005 Index Search

Figure 1. Relationship between yields at optimum N rates (OY)
and the optimum N rate required to reach that yield (ONR)
for corn following corn. Data are from 18 Northern Illinois
site-years (left) and 16 Southern Illinois site-years (right), 1999-2004.

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Department of Crop Sciences University of Illinois Extension College of Agricultural, Consumer, and Environmental Sciences University of Illinois at Urbana-Champaign Illinois Fertilizer & Chemical Association Illinois Department of Agriculture

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