Producers are delayed again in regard to planting due to the recent rainfall across all of Iowa. The optimum planting window for corn generally falls from April 15 to May 15 with yields quickly declining after that; see Corn Planting: Consider soil temperature and date for more information. Although producers are currently still within this optimum window, some are questioning whether longer season maturity hybrids should be swapped for shorter season hybrids. The quick answer is no.
Iowa State University
Abendroth, Lori and Elmore, Roger W., "Hybrids adjust to delayed planting dates" (2007). Integrated Crop Management News. 1094.
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