Mark VanGessel, Extension Weed Specialist; mjv@udel.edu
There are not a lot of Enlist E3 soybeans in the region, but I have received a few calls about which herbicides can be used. Enlist E3 soybeans are resistant to glyphosate, glufosinate, and 2,4-D choline. Enlist One (2,4-D choline alone) and Enlist Duo (2,4-D choline plus glyphosate) can be applied to these soybeans. But Enlist soybeans do not carry the brand name of “Roundup Ready” or “Liberty Link”. If the glyphosate brand says only use on “Roundup Ready” crops then is cannot be applied to Enlist soybeans. These soybeans can only be treated with glyphosate brands that allow application to “glyphosate-resistant” or “glyphosate-tolerant” crops. Likewise, if the label specifies use on “Liberty-Link” soybeans then it cannot be used. Only glufosinate brands that say they can be applied to “glufosinate-resistant” or “glufosinate-tolerant” crops are allowed.
Many herbicide companies are changing their labels to allow application to these new soybeans, so more brand options should be available next season. So be sure to read the label of the brand you intend to use to be sure it is labeled for use.
If using crops with herbicide-tolerance traits be sure you keep detailed records of which fields are planted with which traits. Likewise, when switching varieties, you may need to clean out your planter to avoid mixing traits.