Soil erosion effects on corn (Zea mays L.) production are sparsely doc
umented for the Corn Belt. Simulation of these effects would help iden
tify important information gaps for the region and elsewhere and help
in the understanding of basic soil-plant processes and interactions th
at occur. The N Tillage Residue Management model was tested on nine fi
eld sites across the north-central USA. The 119 site-years of data sim
ulated 78% (R(2) of 0.78) of observed corn yield variability for a wid
e range of eroded soils. Slightly better predictions were made (R(2) v
alues of 0.82 and 0.80) for loess-derived soils and soils in the easte
rn (wetter) study areas, respectively. Till-derived soils and soils in
the western (drier) areas had I values of 0.75 and 0.77, respectively
. Crop yield predictions were most responsive to sell physical propert
ies.