Enlist™ herbicides and in-crop dicamba herbicides
With planting well underway, you may have questions about the recent changes in the in-crop dicamba herbicide labels. Here are some of the high points to note, including how these changes compare to EnlistTM herbicides.
| What has changed | Enlisttm herbicides | in-crop dicamba herbicides |
|---|---|---|
|
Length of registration |
5-year registration, maintained uninterrupted since 2017 |
5 years Follows two previous 2-year registrations and court-ordered registration cancellation in June 2020 |
|
Application calendar date cut-offs |
None. Enlist herbicides can be applied from burndown to no later than R2 or full flowering stage |
June 30 (soybeans) Additional state guidance and restrictions may yet be announced |
|
Tank-mix adjuvants |
None required. 2,4-D choline in Enlist herbicides features inherent near-zero volatility |
Every application MUST INCLUDE an approved pH buffering agent/volatility reduction adjuvant (as listed on the tank-mix website) This is more specific guidance than previous registrations, which include advisory language that tank mixes with a pH of 5 or below have the potential to volatilize. |
|
Downwind buffers |
30' No requirement to check Endangered Species Protection Bulletins for potential additional buffer requirements |
Larger areas now required: 240' in non-endangered species areas 310 in endangered species areas Applicators must check Endangered Species Protection Bulletins to confirm potential additional buffer requirements. Some areas subject to additional 57' omnidirectional buffer and larger downwind buffers. |
Enlist herbicides continue to offer several convenient advantages for farmers in comparison to in-crop dicamba herbicides. The following label guidance has not changed:
| What hasn't changed | Enlisttm herbicides | in-crop dicamba herbicides |
|---|---|---|
|
Federal restricted use pesticide |
No |
Yes |
|
Compatibility with soybeans without the respective trait |
Can be applied when soybeans without the Enlist trait are adjacent and downwind |
Non-dicamba-tolerant soybeans are susceptible to in-crop dicamba herbicides |
|
Applicator certification |
May be applied by persons under supervision of a certified applicator |
Can only be applied by persons with a certified applicator license |
|
Time-of-day application limitations |
None *must avoid temperature inversions |
Can only apply from 1 hour after sunrise to 2 hours before sunset |
|
Use of AIXR and AITTJ nozzles qualified for use? |
These nozzles are qualified options that provide better coverage than ultra-coarse droplets |
Not qualified. Many applicators use TTI nozzles with ultra-coarse droplets for drift control |
|
Use for burndown with other crops |
Labeled for burndown prior to planting crops without the Enlist trait |
Cannot use for burndown with non-dicamba-tolerant crops |
|
Tank-mix with qualified glufosinate |
Can be tank-mixed with glufosinate, including Liberty® herbicide - a preferred tank-mix partner with Enlist One® herbicide |
No qualified glufosinate tank-mix products |
|
Tank-mix with qualified AMS |
Enlist Duo® and Enlist One herbicides can both be tank-mixed with qualified AMS partners. List available at EnlistTankMix.com |
AMS prohibited from tank-mixing |
|
Tank-mix with Durango® DMA® |
Durango® DMA® herbicide (amine form of glyphosate) is a qualified tank-mix partner with Enlist One herbicide |
Only K-salt glyhposate can be tank-mixed with in-crop dicamba herbicides |
|
Glyphosate blend product availability |
Enlist Duo herbicide is a proprietary blend of 2,4-D choline plus glyphosate, with Colex-D® technology |
No glyphosate pre-mix products available |
Keep in mind, this is just an overview. The limitations and advantages of soybean weed control technologies are multifaceted. Be sure to review product labels as well as the resources available on Enlist.com for more information.
