Producers recently experienced good planting conditions; these could be the best planting dates for the year. Although we recommend having corn planted by early May if possible, these recommendations are based on research data accumulated from several locations and years where planting date is the only major variable. This kind of information provides insight as to when, on average, is the best time to plant corn in Iowa. Yield variation exists though in relation to planting dates due to the growing conditions which occur during the remainder of the season.
Iowa State University
Elmore, Roger W.; Taylor, S. Elwynn; and Abendroth, Lori, "Corn Emergence Problems Across Iowa" (2008). Integrated Crop Management News. 921.
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