New mode of action for Palmer amaranth control in cotton
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, re-introduced under Section 18 in South Carolina in 2013 as Brake F2, has shown a tremendous advantage with crop safety with growers reporting extended control of up to 6 to 10 weeks or longer, 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 Dr. 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.”
Cotton growers are working together to control glyphosate-resistant Palmer amaranth and prevent further herbicide resistance through the use of comprehensive integrated weed management programs. SePRO and Nichino America continue to refine best-management guidelines to provide optimal control of Palmer amaranth in cotton.
“Nichino America is excited about our new association with SePRO and Brake F2. We look forward to representing this great new tool for glyphosate-resistant Palmer amaranth control in the cotton herbicide market,” said Jeff Johnson, President of Nichino America.
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