Soybean fields are now starting to senesce, and corn is filling well. The latest USDA crop forecast projected a 187 bushel per acre average for corn yields, and 52 bushels per acre for the beans. Both would be great accomplishments considering the wet spring and cool summer. As of Sept. 13, we are lagging for the season an "average" accumulation of between 300 and 400 degree days, which rivals the 1992 growing season.
Iowa State University
Pope, Richard O., "Degree Days - Slow and Steady Wins the Race" (2009). Integrated Crop Management News. 553.
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