Dicamba Ban In 2021 – Got A “Plan B”? 12 Consultants Share Strategies – AgFax Weed Solutions

Rogator, herbicide, dicamba, spray, MS, Louise, weeds, soybeans

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Here is this month’s issue of AgFax Weed Solutions, sponsored by Nufarm’s Midwestern and Southern teams.
Editor: Owen Taylor
Web Editor: Ernst Undesser
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THIS MONTH…

How will farmers and crop advisors approach 2021 weed management after a court decision voided dicamba’s label?

That’s the main focus of this month’s issue. It includes:

  • Reports from Arkansas, Indiana, Iowa, Minnesota, Mississippi and Missouri.
  • Updates on the legal wrangling over both dicamba and 2,4-D seed technologies.
  • An overview on how consultants in 10 states expect to control weeds in 2021 if dicamba isn’t available.
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Do you have a “Plan B” for weed management in 2021 if dicamba remains unavailable to spray on those traited crops? We posed that question to 12 consultants in 10 states across the Midwest, Midsouth, Southeast and Southwest. Their thinking and possible approaches vary widely. For some, this is a huge problem, while for others it will mostly be business as usual.
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Three dicamba registrants lost one of their last remaining legal options to overturn a federal court’s mandate ending the registrations of three dicamba herbicides.
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The court ruled that EPA only needed to fix one oversight with the Enlist Duo registration regarding the herbicide’s risk to monarch butterflies. The herbicide’s registration will remain intact in the meantime.
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Researchers are delving into the subject on a wider basis now, but a string of studies hints at when peak losses might occur. This video from the University of Missouri also touches on potential losses due to 2,4-D.

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Your goal: reduce weed seed production. If escaped weeds are allowed to produce seed they have the potential to haunt you for decades to come.
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This is the first case of dicamba-resistant pigweed populations being widespread enough to disrupt farmers’ operations and force a change in their weed management
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“The future postemergence chemical control of pigweed in cotton and soybeans, especially in Northeast Arkansas, is looking bleak at best.  Crop rotation to corn or rice is a sound practice but many fields are limited in rotation based on soil type and water capacity.We are coming to a breaking point where a multi-faceted approach to weed management will be required moving forward.”

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Palmer amaranth – now found in half of Iowa’s counties –reaches the stage in late summer when it won’t be mistaken for waterhemp. Scout every field but give priority to particular locations.
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Splitting applications in corn means an extra pass, but if spring weather turns dry, you might be glad you did it, as this Purdue University video shows.
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This 2-year Iowa State project examined three possible approaches, from skimpy to highly aggressive. The results: 3 very different levels of weed seed production.

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In this episode of the Mississippi Crop Situation Podcast, Larry Steckel from the University of Tennessee discusses his recent reports of pigweed escapes after auxin application. Steckel delves into how the slippage will affect Midsouth agriculture and how growers can deal with this problem moving forward.
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Now in its third year, a Missouri study compares cereal rye seeding rates and the effects each has on soybean yields and waterhemp suppression.
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ABOUT AGFAX MEDIA LLC…

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