Acuron Herbicide

Defeats Tough Weeds Other Products Are Missing

To put you back in control of tough weeds, we developed a powerful corn herbicide that delivers more residual control of more weeds with a single product than ever before. 
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Product Overview

  • Contains four active ingredients and three effective modes of action (Group 15, 27 and 5) for multi-targeted control of the most difficult weeds in corn.
  • Provides broad-spectrum control of 70-plus broadleaf weeds and annual grasses in corn for clean fields you can be proud of including:
    • Giant ragweed, common ragweed, Palmer amaranth, waterhemp, marestail, kochia, cocklebur, morningglory, Russian thistle.
  • When used at a full rate, Acuron provides the best chance for one-pass weed control, saving you time and money.
  • Excellent pre- and post-emergence crop safety enables Acuron to be applied from 28 days pre-plant (including burndown) up to 12-inch corn.

Acuron vs. Competitor on Waterhemp

Multiple effective modes of action are needed to control the toughest weeds in corn, like waterhemp. In the trial below, waterhemp was seeded in 4-inch pots, then each pot was treated with Acuron, Corvus, SureStart, Verdict or the individual active ingredient from each product. In a separate trial, waterhemp pots were treated with bicyclopyrone, bicyclopyrone + AAtrex® 4L, and Stinger®, which is an active ingredient in Resicore®, and Stinger + AAtrex 4L.

More of the modes of action in Acuron provided control of waterhemp, while fewer modes of action in the competitors provided effective control.

Select from competitors below:

Waterhemp control: Acuron vs. Corvus - 30 days after treatment
Acuron applied at 3 qt/A rate and individual component rates are based on 3 qt/A of Acuron.
Untreated, Acuron, S-metolachlor, Bicyclopyrone + Mesotrione, Atrazine
Corvus Corvus applied at 5.6 fl oz/A rate and individual component rates are based on 5.6 fl oz/A of Corvus.
Untreated, Corvus, Isoxaflutole, Thiencarbazone-methyl
2015 Syngenta trial USVS0H00320t16
Waterhemp control: Acuron vs. SureStart - 30 days after treatment
Acuron applied at 3 qt/A rate and individual component rates are based on 3 qt/A of Acuron.
Untreated, Acuron, S-metolachlor, Bicyclopyrone + Mesotrione, Atrazine
SureStart applied at 4 pt/A rate and individual component rates are based on 4 pt/A of SureStart.
Untreated, SureStart, Acetochlor, Clopyralid, Rumetsulam
2015 Syngenta trial USVS0H00320t16
Waterhemp control: Acuron vs. Verdict - 35 days after treatment
Acuron applied at 3 qt/A rate and the individual component rates are based on 3 qt/A of Acuron.
Untreated, Acuron, S-metolachlor, Bicyclopyrone + Mesotrione, Atrazine
Verdict applied at 15 fl oz/A rate and the individual component rates are based on 15 fl oz/A Verdict.
Untreated, Verdict, Saflufenacil, Dimethenamid-P
2016 Syngenta trial
Waterhemp control: Acuron vs. Resicore – 14 days after treatment
Component rates: bicyclopyrone 3.5 oz and AAtrex 4L 1 pt
Untreated, Bicyclopyrone, Bicyclopyrone + AAtrex 4L
Component rates: Stinger 2.5 oz and AAtrex 4L 1 pt
Untreated, Stinger, Stinger + AAtrex 4L
Treatments included Agri-Dex® and AMS at 1% and 2.5% v/v respectively. 2017 Syngenta trials, Vero Beach Research Center.


See How Acuron Performs in Your Area

Enter your zip code below to see for yourself how Acuron, powered by the latest herbicide active ingredient, bicyclopyrone, performs in an area near you. Still not convinced? Use our competitor filters to see how Acuron performs against your current corn herbicide.

Lindsay, NE - Acuron 3 qts/A PRE + Touchdown - 41 days after treatment
West Bend, IA - Acuron 3 qts/A PRE
Girard, KS - Acuron immediately after planting at 2.5 qt/A on March 24. Photo taken 81 DAT


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Download Supporting Acuron Documents

2017691201753164215_acuron-verdict-thumb.jpg PDF
Acuron vs. Verdict Brochure(PDF)
2017902201721518571_Acuron vs. Resicore.jpg PDF
Acuron vs. Resicore Brochure(PDF)
20168372016322181128_Acuron-vs.-Corvus.jpg PDF
Acuron vs. Corvus Brochure(PDF)
20172392017215185932_acuron-vs-surestart.jpg PDF
Acuron vs. SureStart and TripleFLEX Brochure(PDF)
2016758201632218048_Acuron-Weeds-Controlled.jpg PDF
Acuron Weeds Controlled(PDF)
2016969201632218857_Acuron-Brochure.jpg PDF
Acuron Brochure(PDF)
20163452016118173226_Acuron-Advertorial-2016.jpg PDF
Acuron Testimonials(PDF)
2017449201766204017_retailer-formulation.jpg PDF
Acuron Formulation Q&A(PDF)
2017759201766203258_acuron-tech-bulletin.jpg PDF
Acuron Technical Bulletin(PDF)

What We're Talking About

Follow #toughweeds for the latest weed management tips and performance updates from the field all season long. Join the conversation by sharing photos using #toughweeds to show us how Acuron is performing in your field.

RSS Know More Grow More – Corn

Know Your Weeds

Acuron delivers dramatically improved control and more consistent control of the toughest broadleaf weeds and grasses in corn.

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Palmer Amaranth
Acuron Pre-emergence Palmer amaranth
Acuron Pre-emergence ivyleaf morningglory
Giant Ragweed
Pre-emergence control of giant ragweed
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The first glyphosate-resistant weed identified in U.S. row crops in 2000, marestail is a dangerous weed. It produces up to 200,000 seeds/plant and grows up to 5-6 feet tall. The seeds are highly mobile, which results in rapid spread.

Marestail usually germinates in fall and spring, but can germinate year-round.


Waterhemp produces up to 1 million seeds/plant and can grow as much as 1 inch/day. The average height is 4-5 feet tall, with some weeds reaching up to 12-feet tall.

The pollen from these weeds can travel ½ a mile or more and because of the cross pollination that occurs, resistance can spread quickly.

Palmer Amaranth

Palmer amaranth thrives in reduced-, minimum- or no-tillage systems because it germinates close to the soil surface. It can produce 10,000 to 100,000 seeds/plant and has the potential to overtake the crop due to its rapid growth and aggressive competition.

Palmer amaranth has prolific seed production and germination throughout the season. It has a faster growth rate and is more competitive than other pigweed species, with growth rates approaching 3 inches/day.

When allowed to compete throughout the growing season, Palmer amaranth can create yield losses up to 91% in corn. It can reach 8 feet in height.

Pre-emergence control of Palmer amaranth

49-57 days after emergence (DAE)


Once established, morningglory is very difficult to control with post-emergence applications of herbicides. It competes with corn crops for nutrients and has the potential to reduce yield.

Morningglory can produce up to 500 seeds/plant, and, due to an extremely hard seed coat, some seeds can remain viable in the soil for more than 50 years.

Pre-emergence control of ivyleaf morningglory

62 days after treatment (DAT)

Giant Ragweed

Field research demonstrates that season-long competition from just 2 giant ragweed plants per 110 square feet can reduce corn yield by 13%.

Giant ragweed often grows taller than the crop, sometimes up to 5 feet taller. It can produce up to 5,100 seeds per plant.

Pre-emergence control of giant ragweed

49-58 days after emergence (DAE)


Feb 23, 2017

Syngenta identifies key strategies to fight weed resistance

As corn and soybean growers deal with an expanding and intensifying threat of resistant weeds, Syngenta is recommending strategies for managing weeds that begin early in the season.Read more »

Jan 5, 2017

Syngenta warns: Palmer amaranth top of weed watch list yet again

Syngenta agronomists warn that last year's most notorious weed, Palmer amaranth, will continue to hold its place as the No. 1 weed to monitor in 2017.Read more »

Nov 14, 2016

Growers see strong 2016 performance from Syngenta corn herbicides: Acuron® and Acuron® Flexi

As weed resistance continues to spread, Acuron® and Acuron® Flexi corn herbicides delivered broad-spectrum control to defeat tough broadleaf weeds and grasses during the 2016 season. Read more »

May 26, 2016

Acuron Takes Control of Tough Weeds in Corn

After herbicide resistance began to develop on his farm, Nathan Miller found the level of control he was looking for to defeat tough weeds. Read more »

May 26, 2016

Resistant weeds are on the rise

Using a pre-emergent herbicide with multiple effective modes of action is the answer many growers are seeking. Read more »

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