With many producers wanting to plant earlier and earlier, the use of polymer coatings has been questioned. Polymer coatings are designed to stay intact until a soil temperature of 55° F is reached, at which time water can penetrate the coating. Some have questioned whether coated seed is a "key" factor for early plantings to be successful. Does the addition of this coating help to extend the planting window even earlier? A comparison of polymer-coated and non-coated seed was included for each planting date study highlighted in the article, Has the best time to plant corn changed?.
Iowa State University
Abendroth, Lori and Elmore, Roger W., "Do polymer coatings help with early corn plantings?" (2006). Integrated Crop Management News. 1202.
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