This article is the third in a series reviewing unique or updated label requirements for key herbicides. Instructions printed on your herbicide label supersede this information.
The Enlist herbicide resistance trait is available in certain transgenic (GMO) varieties of three crops: corn, cotton, and soybean. Enlist corn is tolerant of 2,4-D, glyphosate, and ‘fop’ graminicides; Enlist cotton is tolerant of 2,4-D, glyphosate, and glufosinate (Liberty, etc.); and Enlist E3 soybeans are tolerant of 2,4-D, glyphosate, and glufosinate. However, the only 2,4-D formulations labeled for use in-crop are Enlist One (2,4-D) and Enlist Duo (2,4-D plus glyphosate). These products contain 2,4-D choline, which is intended to reduce off-target movement of the herbicide. Similarly, Assure II is the only graminicide labeled for use in Enlist corn.
Some of the unique label requirements to be aware of when using Enlist One or Enlist Duo are listed below.
In addition, some growers last summer experienced tank-mix compatibility issues when mixing Enlist One with some glyphosate formulations. As a result, Corteva is recommending at least 5 minutes of agitation after adding any AMS product and 2-3 minutes between other products.
Sarah Lancaster, Extension Weed Science Specialist