Illinois Fertilizer Conference Proceedings

Table 3. Effects of wheat N rate and time of N application to wheat on wheat and double-crop soybean yields, 2007.

  Variable DSAC BARC
Wheat Yield Soybean Yield Wheat Yield Soybean Yield
  ------------------------------- bu/acre -----------------------------
Wheat N Rate
60
90
120
43.5
48.2
49.4
41.6
40.2
39.5
86.8
88.9
86.1
21.3
21.9
22.0
N Timing on Wheat
Feb (Feekes 3.0)
Mar (Feekes 5.0)
40.9
53.5
41.9
38.9
83.8
90.9
21.8
21.8
Statistics
N lin
N quad
N Timing		  
***
**
***		  
***
NS
***		  
NS
**
***		  
NS
NS
NS

Averaged across several N sources.
*, **, and *** refer to significance at the 10, 5 and 1% levels, respectively.  NS = nonsignificant.

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