EPA has extended the registration for two years for over-the-top (OTP) use of dicamba to control weeds in dicamba-tolerant cotton and soybeans.
High points announced today by EPA include:
- Only certified applicators may apply dicamba over the top. Personnel working under the supervision of a certified applicator may no longer make applications.
- Over-the-top application of dicamba are prohibited on soybeans 45 days after planting and cotton at 60 days after planting. (EDITOR’S NOTE; See clarification in tweet from Iowa State’s Bob Hartzler below.)
- For cotton, the number of over-the-top applications will be reduced from 4 to 2. Soybeans remain at 2 allowed OTT applications.
- Applications will be allowed only from 1 hour after sunrise to 2 hours before sunset.
- In counties where endangered species may exist, the downwind buffer will remain at 110 feet and there will be a new 57-foot buffer around the other sides of the field (the 110-foot downwind buffer applies to all applications, not just in counties where endangered species may exist).
- Training periods will be clarified for 2019 and beyond, ensuring consistency across all affected products.
- Enhanced tank clean-out instructions will be put into place for the entire system.
- Enhanced label to improve applicator awareness on the impact of low pH’s on the potential volatility of dicamba.
- Label will be revised for consistency “to improve compliance and enforceability.”
On social media:
Apparently the dicamba label restricts applications to 45 days after planting OR before beans reach R1 stage, whichever comes first. That is better than just the 45 DAP.
— Bob Hartzler (@ISUWeeds) November 2, 2018
45 days after planting is a restriction that doesn’t really do anything more than the original label did. State could be more strict but would be surprised to see that. https://t.co/4256bscrpw
— Meaghan Anderson (@mjanders1) November 1, 2018
Dicamba restricted to 45 days after planting soybeans. Let the planting date games begin…
— Aaron Combs (@cfarms76) November 1, 2018
So the new Dicamba label is worse for controlling drift? Wasn’t there a date before that you couldn’t spray after? Now its 45 days after planting? So if I plant beans the 10th of June I could spray the 20th of July? During peak off target potential? Am I understanding wrong?
— Mark Nelson (@MarkNel1026) November 1, 2018
I see the new #dicamba rules just push more liability onto the operator. This does nothing to stop the idiots who are screwing it up for the rest of you following the rules.
— Sean Harmon (@noharmon03) November 1, 2018