Mark VanGessel, Extension Weed Specialist; firstname.lastname@example.org
There have been a few places where replanting Roundup Ready corn is necessary and existing plants need to be killed. The difficulty is that the corn is Roundup Ready and how best to kill it. A project conducted in this area compared Select Max, Gramoxone alone, and Gramoxone with tankmix partners. Select Max at 6 fl oz/A was effective, but the label requires that the field can not be replanted for at least 6 days after application. The best treatments (95% control) were Gramoxone Inteon (at 1 qt/A) plus 2 oz of Sencor and Gramoxone (1 qt/A) plus Lorox (4 oz/A) applied to 5 inch corn. Applications to 2 to 3 inch corn averaged 80% control or less. Gramoxone Inteon alone was very inconsistent. No treatment consistently controlled all plants. If complete control is necessary, tillage will be required.