Introduction

Yield Response (Bu./A.)
BECK’S Under-Application N Rate
2014 PFR Partners
20.0
10.0
Under-Application Yield Summary
36 Trial Locations
0.0
-10.0
-20.0
-30.0
-40.0
-50.0
-60.0
-8.5 Bu./A. yield loss
39% of reduced nitrogen rate trials provided economic gains
-$17.94 loss in net return per acre^
^Net return based on $0.60/lb. N and $4.15/Bu. corn
Average reduced nitrogen rate of –28.8 lb.
2-Year average yield loss of –10.0 Bu./A.
-$23.97 loss in net return
Under-applications resulted in average yield losses of 8.5 Bu./A., with only 39% of the
total number of applications offering positive economic gains. This particular under
application trial has been conducted over the past two years with average yield losses
of 10.0 Bu./A. and economic losses of $23.97. The red line in the chart signifies the
break-even point for reduced nitrogen applications. Even though yield may have
suffered from lack of nitrogen in some of the trial locations, the lower cost of nitrogen
allowed for economic gains.
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