Syngenta herbicides cleared for tank mixes on Roundup Ready 2 Xtend soybeans and Bollgard II XtendFlex cotton

Syngenta has received confirmation from the U.S. Environmental Protection Agency (EPA) that several Syngenta herbicide tank-mix options have been cleared for inclusion with both XtendiMax® with VaporGrip® Technology and Engenia® herbicides. These herbicides will be available for use on Roundup Ready 2 Xtend® soybeans and Bollgard II® XtendFlex® cotton traits, providing growers with additional weed management options in 2018.

Syngenta herbicide tank-mix options* now include the following products:
•    Boundary®
•    BroadAxe® XC
•    Caparol®
•    Dual Magnum®
•    Flexstar® (currently for XtendiMax only)
•    Prefix®
•    Reflex®
•    Sequence®

“The Syngenta soybean and cotton portfolios provide the most effective dicamba spray programs through overlapping residual applications and multiple effective modes of action,” said John Appel, herbicide product lead, Syngenta. “For example, a soybean program of Boundary followed by dicamba plus Sequence provides residual control and includes four different modes of action – offering growers peace of mind against even the toughest weeds.”

University researchers stress the importance of diversifying modes of action within a weed management system. In continuous crop systems with early and late post-emergence applications with one mode of action, resistance can lead to weed control failure in as little as two years. By comparison, the addition of a pre-emergence herbicide with two effective modes of action can delay resistance for 18 to 20 years in most cases.

Using residual herbicide tank mixes with dicamba is also necessary to help delay the onset of resistance to the technology. “Unless dicamba is used responsibly in combination with other pre- and post-emergence herbicides, the technology will be over-extended and eventually fail,” said Appel. “We can’t afford to put the kind of selection pressure on dicamba as was done to glyphosate.”

All of the recently cleared Syngenta herbicide tank mixes have been tested according to EPA approved protocol, and the results are certified in accordance to the terms and conditions of registration for XtendiMax and Engenia.

Syngenta herbicides cleared for tank mixing with XtendiMax and Engenia may be used only once listed on the following websites, which will happen within 90 days of EPA clearance:  www.XtendiMaxApplicationRequirements.com and www.EngeniaTankMix.com. Syngenta does not recommend using any dicamba herbicide tank mixes until they are posted on these websites.

Syngenta is also currently pursuing dicamba tank-mix clearance for Envoke®, Flexstar (with Engenia), Fusilade® DX and Gramoxone® SL 2.0 herbicides.

*Check www.XtendiMaxApplicationRequirements.com and www.EngeniaTankMix.com for approved drift reduction agents.