Cool weather and associated slow growing degree day accumulations describe the 2009 corn growing season to date. Rich Pope discussed degree day trends and comparisons over years in a recent Integrated Crop Management News (ICM) article. Degree day accumulations this year track similar to those of 1992 and 2004 which were both excellent years for corn yield. In an earlier ICM article, the positive aspects of cool night temperatures were discussed: cooler temperatures correlate positively with yield.
Iowa State University
Elmore, Roger W. and Abendroth, Lori, "Corn Yield Simulations – Late August 2009" (2009). Integrated Crop Management News. 542.
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