Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 January 2007
Published in Agron J 99:49-58 (2007)
DOI: 10.2134/agronj2006.0195
© 2007 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Winter Triticale Response to Nitrogen Fertilization when Grown after Corn or Soybean

Lance R. Gibsona,*, Carasella D. Nancea and Douglas L. Karlenb

a Dep. of Agronomy, Iowa State Univ., Ames, IA 50011
b USDA-ARS National Soil Tilth Lab., Ames, IA 50011


Figure 1
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  		Fig. 1. Temperature and rainfall conditions at the Iowa State University Bruner Farm near Ames in 2003, 2004, and 2005.

 

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  		Fig. 2. Temperature and rainfall conditions at the Iowa State University Armstrong Farm near Lewis in 2003, 2004, and 2005.

 

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  		Fig. 3. Dry matter accumulation, N concentration, and N uptake curves for winter triticale grown near Ames, IA, in 2004 and 2005. The winter triticale was fertilized in mid to late March with either 0, 33, 66, or 99 kg N ha–1. Growing degree days were calculated from 1 March using a base temperature of 0°C.

 

Figure 4
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  		Fig. 4. Dry matter accumulation, N concentration, and N uptake curves for winter triticale grown near Lewis, IA, in 2004 and 2005. The winter triticale was fertilized in mid to late March with either 0, 33, 66, or 99 kg N ha–1. Growing degree days were calculated from 1 March using a base temperature of 0°C.

 




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