These herbicides are single mode of action group 4 herbicides- (synthetic auxins). It is highly recommended, for maximum weed control and resistance management, to use multiple modes of action starting with a preemergence residual herbicide, such as Prefix^®, Boundary^® 6.5 EC or BroadAxe^® XC or other competitive products.

Follow the preemergence program, with an as-directed postemergence application of a dicamba formulation approved for use on Roundup Ready 2 Xtend soybeans.  Also, an approved postemergence tank-mix partner is recommended for additional weed control.

It is important to strictly adhere to the label for application timings, for example, control of waterhemp and Palmer amaranth is most effective when applied before the weeds exceed 4” in height. Finally, it is critical that only dicamba products approved for use on Roundup Ready 2 Xtend soybeans are used as-directed by the label.

Below are links to websites that provide the proper rate, application, and stewardship information for these products. Please feel free to contact me with any questions on my cell 815-601-8424 or email me at todd.thumma@syngenta.com.

Engenia

• Supplemental label for use in dicamba tolerant soybeans:

http://www.cdms.net/ldat/ldDG8007.pdf

• Approved Nozzles and Tank-mixes

http://agproducts.basf.us/campaigns/engenia/tankmixselector/

XtendiMax With VaporGrip Technology

• Supplemental label for preemergence and postemergence use in Roundup Ready 2 Xtend Soybeans

http://www.cdms.net/ldat/ldDF9002.pdf

• Approved nozzles and tank-mixes

http://www.xtendimaxapplicationrequirements.com/Pages/default.aspx

FeXapan Plus VaporGrip Technology

• Supplemental label for preemergence and postemergence use in Roundup Ready 2 Xtend Soybeans

http://www.cdms.net/ldat/ldDJ1003.pdf

• Approved nozzles and tank-mixes

http://www.dupont.com/products-and-services/crop-protection/soybean-protection/articles/fexapan-application.html?src=fexapanapplicationrequirements_dupont_com

 Todd Thumma is a product development agronomist for Syngenta.