Brake F2 herbicide gets approved for cotton in more Southeast states

In response to an industry in search of a new mode of action to fight pigweed, Brake F2 herbicide has been granted Section 18 emergency exemptions for use in 2014 in approved counties in Georgia, South Carolina, North Carolina and Tennessee

SePRO Corporation and Nichino America, Inc. are partnering in the marketing and product stewardship effort and launching new Brake F2 website, where growers can find application instructions, links to expert advice and authorized distributor agents, product label downloads and pricing.

“The next step is getting Brake F2 to the farms where it’s most needed along with the knowledge growers want to maximize its use,” said SePRO President William Culpepper. “The Brake F2 weed control system has been developed with a devotion to managing future herbicide resistance. We are pleased to be able to provide another tool to manage this urgent problem facing cotton growers.”

Due to the rapid proliferation of resistant Palmer amaranth, herbicide costs in the cotton industry soared from around $23 per acre in 2004 to $100 per acre by 2012.

The USDA turned to SePRO Corporation in 2011 to inquire about the potential use of Sonar for the control of Palmer amaranth. Sonar Aquatic Herbicide controls weeds in lakes and ponds. Before Sonar was introduced to the aquatics market in 1986, it had also been investigated and proven highly effective for weed control in cotton under the trade name Brake.

The Brake Cooperative Research Program was initiated by SePRO Corporation with support from Cotton Incorporated and the National Cotton Council.

Brake F2 contains fomesafen and fluridone.  Fomesafen requires low moisture for activation but provides shorter residual control while fluridone requires more moisture for activation but has longer residual control. Cotton is very tolerant to fluridone.

The combination of the two complementary active ingredients, which had a Section 18 in South Carolina in 2013 as Brake F2, has shown to provide extended control of up to 6 to 10 weeks, depending on soil type and conditions.

“The key to glyphosate-resistant Palmer amaranth control is a comprehensive integrated weed management strategy. Brake F2 can be used as the foundation residual treatment in such a program,” said Tyler Koschnick, vice president of research and regulatory at SePRO. “Brake F2 provides good crop safety and residual Palmer amaranth control. An early post-plant treatment with an overlapping residual as well as scouting for escapes and use of a late post and/or layby applications are all still essential to achieve the necessary zero-tolerance control.”