Yesterday, the U.S. EPA released critical information on the use of Engenia,
Fexapan, and XtendiMax. The entire news release can be found at https://www.epa.gov/newsreleases/epa-offers-clarity-farmers-light-recent-court-vacatur-dicamba-registrations
Please
visit the website for details; however, below are the details of the order:
“Details of the Order
EPA’s order addresses sale, distribution, and use of existing
stocks of the three affected dicamba products – XtendiMax with vapor grip
technology, Engenia, and FeXapan.
- Distribution
or sale by any person is generally prohibited except for ensuring proper
disposal or return to the registrant.
- Growers
and commercial applicators may use existing stocks that were in their
possession on June 3, 2020, the effective date of the Court decision. Such
use must be consistent with the product’s previously-approved label, and
may not continue after July 31, 2020.”
Cotton Weed Control Thoughts (Use only labeled products and follow all labeled directions
and restrictions):
Scenario One: Large pigweed with enough in-crop dicamba for two applications: Spray labeled Roundup + dicamba immediately,
wait 7 to 10 days and then make a second application; 12 days later run the
lay-by rig with either 1) Direx + MSMA + Crop Oil if grasses are not up or 2)
Roundup + Direx if grasses are up (add Envoke with lay-by if morningglory or
nutsedge is a problem).
Scenario Two: Large pigweed with enough in-crop dicamba for one application: Spray labeled Roundup + dicamba immediately,
wait 7 to 10 days and then make a Liberty tank mix application; 12 days later
run the lay-by rig with either 1) Direx + MSMA + Crop Oil if grasses are not up
or 2) Roundup + Direx if grasses are up (add Envoke with lay-by if morningglory
or nutsedge is a problem).
Scenario Three: Large pigweed with no dicamba available. Sequential Liberty
applications will be best approach although less effective than either dicamba system
above. We were able to obtain a new state label for Liberty shortening
intervals between sequential applications which will improve control (will be sending this information in another blog soon).
Other Thoughts:
- Tavium registration was not revoked and therefore
the herbicide is not impacted as of now.
- The Enlist program of herbicides are following a
similar path to that of Engenia, Fexapan, and XtendiMax in the court
system. No one can predict the future.
