Wednesday, February 26, 2025

Enlist® Field Corn Weed Control System (Prostko)

Many Georgia growers are very familiar with the Enlist® (i.e. 2,4-D choline) weed control systems for soybean and cotton.  However, I have not talked very much about the Enlist® weed control system for field corn.  This was primarily due to the fact that there was not a good Enlist® corn hybrid adapted for the SE. I recently learned that Pioneer now has one (P13777PWUE).  Check out this 2024 yield data from Pioneer: 

Consequently, some Georgia growers might now be more interested in trying the Enlist® field corn weed control system (on a limited basis).   A few thoughts about this system:

1) I have not conducted very many weed control trials with the Enlist® system.  My weed science research colleague in Athens (Dr. Nick Basinger) has.  Between his work and mine, it looks like a pretty good weed control system.  I will be conducting additional trials this year.  Check out the following picture from a field trial I conducted in 2018: 

2) Enlist® field corn hybrids are tolerant to 4 different herbicides including 2,4-D choline, Roundup® (glyphosate), Liberty® (glufosinate), and Assure® II (quizalofop).

3) P13777PWUE has the following characteristics:   


4) Because of the previous lack of adapted field corn hybrids, I do not have any specific information listed in the 2025 UGA Pest Control Handbook.  But, I will update for 2026.

5) For more general information about the Enlist® field corn weed control system, check out the following Corteva™ publication:

https://www.corteva.us/content/dam/dpagco/corteva/na/us/en/files/trait-stewardship/product-use-guides/DOC-2025-US-PUG-Corn.pdf

6) Enlist® One Label:

https://s3-us-west-1.amazonaws.com/agrian-cg-fs1-production/pdfs/Enlist_One_Label1gu.pdf

7) Enlist Duo® Label:

https://s3-us-west-1.amazonaws.com/agrian-cg-fs1-production/pdfs/Enlist_Duo_Label1gu.pdf

8) Assure® II Label (pages 10, 14-15 for Enlist® information)

https://s3-us-west-1.amazonaws.com/agrian-cg-fs1-production/pdfs/Assure_II_Label1j.pdf

9) As always, please feel free to reach out to me if you have any questions.

Thursday, February 6, 2025

Weed Control in Conventional Corn (Prostko)

Yesterday while attending the Georgia Peanut Commission Research Update, I had the pleasure of sitting next to Tift Co. Extension Agent, Justin Hand.  He mentioned to to me that several of his growers are interested in weed control programs for conventional field corn.  I suspect that many of you might also be interested in this topic so here are a few thoughts:

1) Conventional field corn hybrids are available from several companies.  Here are a few:

Dekalb: DKC59-80, DKC111-30, DKC63-58, DKC66-02, DKC68-37

https://www.cropscience.bayer.us/corn/dekalb/seed-catalog

Dyna-Gro: D57CC51

https://dynagroseed.com/seed-finder/corn?cropsId=dynagroseed:crops/corn

Pioneer: P1197, P1870, P1608, P17677 all have conventional versions but supply might be limited

https://www.pioneer.com/us/product-catalog/crop-corn.html

Please contact our new Extension Grains Agronomist, Dr. Nick J. Shay (Nicholas.Shay@uga.edu) for more information about field corn hybrids. 

2) Here is a slide from my 2025 county presentation about weed control in conventional field corn. Growers need to double-check labels since some herbicide tank-mixes are prohibited (i.e. Callisto and Dual Magnum or Outlook).  Also, growers need to confirm the tolerance of any field corn hybrid to the WSSA/HRAC Group 2, Group 15, and Group 27 herbicides. If Counter is used in-furrow for soil insects/nematodes, Callisto, Revulin Q, and Steadfast Q cannot be applied POST. 


3) Here are some field pictures of these herbicide programs from my 2023 and 2024 research plots. This research was partially supported by the Georgia Corn Commission.



4) Feel free to contact me at any time via phone/text (229-392-1034), e-mail (eprostko@uga.edu), carrier pigeon, or smoke signal. I am available to you 365/24/7!

Tuesday, February 4, 2025

National Pesticide Safety Education Month (Prostko)

February 2025 is the 8th Annual National Pesticide Safety Education Month (NPSEM).  The NPSEM web-page has lots of good information about basic pesticide safety principles, storage, drift, wildlife protection, etc.  Check out the following web-page for more information:  

https://pesticidestewardship.org/national-pesticide-safety-education-month/