Polymer coatings are temperature sensitive where polymer molecules change orientation as temperature increases, allowing water to enter the seed coat and begin the process of germination. Once soil temperature is at a critical level where seed germination can begin and growth can occur, the polymer allows water to cross the polymer. Most data indicates stands are not improved and that seedling emergence occurs over a longer period of time, leading to variability which can ultimately decrease yield. While the concept is attractive the real world results derived from research trials are not adequate.
For more information on this or other topics related to corn production, contact your state extension corn specialist or your local extension educator/agent.
The following is the link to the corn extension specialists: state extension corn specialist
