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Illinois Fertilizer Conference Proceedings
January 26-28, 2006

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Table 3. Effects tile treatments on optimum N rate, yield at
optimum N, and N use efficiency, Benton, 2005.
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Tile Treatment Optimum N †

Yield at Optimum

NUE
  (lb N/acre) (bu/acre) (lb N/bu)
Over 30' tiles
122
194
0.63
Between 30' tiles
145
171
0.85
Over 60' tiles
113
185
0.61
Between 60' tiles
156
172
0.91
Between 120' tiles
121
172
0.70

† Based on $2.00/bu corn price and $0.30/lb N cost.

 

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