Last week the U.S. Court of Appeals for the Ninth Circuit made a decision to vacate the registration of three Dicamba products Xtendimax, Engenia, and FeXapan for over the top use on soybeans.
The South Dakota Department of Agriculture has decided to suspend all sales and application of Dicamba products.
SDDA sent a letter last week to the Environmental Protection Agency asking for guidance as South Dakota’s 24 C label discontinues use of June 30.
Due to the suspension of Dicamba products producers now have limited options when it comes to weed control until further guidance is released from the EPA.
Some other options may be:
- Tavium, a mixture of Dicamba and S-metolachlor, is still labeled for over the top use, however there are limited supplies available.
- Conventional products like Flexstar, Ultra Blazer and Cobra are labeled for post application and are effective on waterhemp at 2-4 inches, but will have limited control on larger weeds.
- Cobra is effective on Kochia at 1-2 inches. Producers should follow labels closely, as there are limited products available to control other broadleaf weeds.
South Dakota producers are urged to direct their weed or weed control question to Paul Johnson SDSU Extension Weed Science Coordinator, at PaulO.Johnson@sdstate.edu or 605.688.4591.
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