Yield (bu/acre)


Cost/Price (ratio)


Maximum Yield 244 bu/A N 294 Ib/A


0 50 100 150 200 250 300


1.4

1.2

1

0.8

0.6

0.4

0.2


-0
350


 Ib N/acre
Figure 1. Grain yield of corn as a function of nitrogen rate. The cost/price
 ratio is equal to the slope of the yield function. Equations were
 derived from yield data obtained at the North Florida Research and
 Education Center, Quincy.


300