Roundup Ready is a trademark term applied to varieties that contain a gene system inserted into the plant's DNA that imparts vegetative tolerance to the herbicide glyphosate (e.g. Roundup). In most environments Roundup Ready varieties lack full reproductive tolerance to glyphosate applied after the 4th leaf stage.
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
