Alert icon You’ve been geo-located to Saskatchewan. Please ensure this is representative of where your farm resides. If not, please select the correct province. Sorry we cannot determine your location. To accurately serve you better, please choose your province below. Close icon

Select your preferred language.

Choisissez votre langue préférée

Less kochia. More what you love.

Infinity FX


There's A New Standard In Weed Control

Introducing Infinity® FX, a cereal herbicide that provides the widest spectrum of broadleaf weed control on the market. It combines the power of three herbicide Groups, making it an outstanding resistance management tool. Infinity FX provides you with fast-acting control of your toughest broadleaf weeds such as Canada fleabane, chickweed, common ragweed, lamb’s quarters and wild buckwheat.

Product Summary


Product Type

  • Herbicide


  • Wheat
  • Barley


  • Broadleaf
Weeds Surpressed

Weeds Controlled (Top 6)

  • Cleavers
  • Kochia
  • Wild Buckwheat
Groups and Active Ingredients

Groups and Active Ingredients

  • Fluroxypyr Group 4
  • Bromoxynil Group 6
  • Pyrasulfotole Group 27
Formulation Type

Formulation Type

  • Liquid-Emulsifiable Concentrate


  • 8.1 L Jug (20 ac)
  • 129.6 L Drum (320 ac)
  • 405 L Bulk Tote (1000 ac)

Key Product Points

  • Contains three herbicide groups providing both contact and systemic activity.
  • Industry leading control of cleavers and kochia, whether they're resistant or not.
BENEFIT Infinity Infinity FX
Exceptional broadleaf weed control check check
Outstanding resistance management with Group 27 chemistry check check
Cleavers control 1 to 6 whorls 1 to 9 whorls
Kochia control Up to 10 cm in height Up to 15 cm in height

Infinity FX Advantage

Features and Benefits

  • Three herbicide Groups (27, 6 and 4) utilizing both systemic and contact activity
  • Offers outstanding control of cleavers and kochia in addition to many other tough-to-control broadleaf weeds
  • Exceptional resistance management – with Infinity FX you get the activity of three different herbicide Groups on the same weed species
  • Contains unique Group 27 chemistry, still the newest cereal herbicide Group in Canada
  • Powered by pyrasulfotole, super-charged with bromoxynil and boosted with fluroxypyr, Infinity FX has speed of activity that is visible within days
  • Tank-mix friendly, Infinity FX is the preferred tank-mix partner with all major graminicides including: Varro®, Puma® Advance, Axial® BIA, Horizon® NG and Liquid Achieve™
  • Option to add AMS for increased control of specific problem weeds
  • Wide window of application and excellent crop safety
  • Convenient 40 acre co-pack

Infinity FX vs. The Competition

Infinity FX For Tough Weed Control

Infinity FX For Tough Weed Control


5 Bayer Internal Development and Licensing trials on 9 whorl cleavers.
2 Bayer Internal Development and Licensing trials on 15 cm high volunteer flax.
4 Bayer Internal Development and Licensing trials on 15 cm high kochia.
Your results may vary according to agronomic, environmental and pest pressure variables

Active Ingredients

Group 27 Group 6 Group 4
Group 27
Group 6
Group 4


Crops Barley Wheat, Durum Wheat, Spring

Weeds Controlled

Broadleaf Weeds Infinity FX Infinity FX + AMS
+ 2, 4-D or MCPA
Annual sow thistle E E
Canada fleabane
(Spring Seedlings)
Canada thistle S S++ (MCPA)
Chickweed VG VG
(up to 9 whorls)
Common ragweed VG VG
Dandelion S S++ (MCPA)
Flixweed E E
Giant ragweed   S (AMS)
Hemp-nettle VG VG
(up to 15 cm in height)
VG E (2,4-D)
Lady's-thumb/smartweed VG VG
Lamb's-quarters E E
Narrow-leaved hawk's-beard
(up to 10 cm in height and prior to bolting)
VG VG+ (2,4-D)
Perennial sow thistle S S++ (MCPA)
Redroot pigweed E E
Round-leaved mallow S S
Russian thistle E E
Shepherd's-purse E E
Stinkweed E E
Stork's-bill   VG (2,4-D)
Volunteer canola E E
Volunteer flax VG VG
Volunteer soybeans VG, 3-4 Trifoliate VG, 5-9 Trifoliate (AMS)
Wild buckwheat E E
Wild mustard E E

Weed Control

100 – 95%
Very Good
94 – 90%
≤ 84%
Not Registered

†AMS rate is based on the 40% or 0.4 kg/L concentration of AMS.

Registered Tank Mixes

Mixing Order

  • Add Infinity FX, then tank-mix partner
  • If adding AMS, always add AMS to the tank first

Wheat Barley
Product Spring Durum
2,4-D Ester1      
2,4-D Ester + AMS      
Axial BIA      
Horizon NG      
Liquid Achieve      
MCPA Ester1      
Puma Advance      

Apply mixes according to the most restrictive use limitation.
1Bayer Tank Mix Exception List

jug icon

Get the Max from your Tank Mix

Our tank mix tool can help you find the best tank mix partner for the Bayer herbicide you’re using.
Tank Mix Tool

Application Tips

  • Registered application rate: 0.335 L/ac. of Infinity® + 0.16 L/ac. of FX


Crops/Application timing
  • Crops may be treated from the 2 leaf stage of growth until the flag leaf is just visible but still rolled


Water Volumes


  • Minimum of 19 L/ac. (5 gal./ac.)


  • Rainfast one hour after application


Re-cropping Intervals
  • Barley, canola, flax, oats, peas (field)1, and wheat (spring and durum) can be planted 10 months following an application of Infinity FX
  • Lentils can be planted 22 months following an application of Infinity FX

1 Field peas may be grown the year following Infinity FX herbicide application in all black, grey-wooded and dark brown soil zones. Do not plant field peas the year following an Infinity FX application in brown soil zones where organic matter content is below 2.5% and soil pH is above 7.5.


Residue and Grazing
  • Do not graze treated crops or cut for forage or hay within 25 days of application
  • Do not harvest wheat (durum or spring) or barley for grain or straw within 60 days of application

Resistance Management

Exceptional Resistance Management

With Infinity® FX you get the activity of three different herbicide Groups (27, 6 and 4), on the same weed species, which has proven to be an excellent resistant management strategy. Powered by pyrasulfotole, a unique Group 27 chemistry, super-charged with bromoxynil and boosted with fluroxypyr, Infinity FX has speed of activity that will exceed your expectations.

What is Resistance?

Resistance is a naturally occuring, inherited ability of some weed biotypes to survive a herbicide treatment that should, under normal use conditions, effectively control a weed population. Some herbicide resistant weeds have naturally developed one or more mechanisms that allow them to survive a herbicide treatment.

What is Resistance

For a weed to be considered resistant it must:

  • Normally be controlled by the herbicide
  • Survive a usually lethal dose of the herbicide
  • Be heritable, meaning it is passed from generation to generation

Herbicide-resistant individuals are naturally present within a weed population at very low frequencies.

Did you know that there are over 130 Group 2-resistant biotypes in Western Canada?

What's the impact to farming in Western Canada?

Why is it important to you?

The management issues and yield concerns with herbicide resistance are very real, especially now with an increasing number of herbicide resistant weeds spreading across Western Canada.

Loss of viable herbicide options

  • Have to rely on currently available herbicides for the foreseeable future
  • No herbicides with new modes of action are in advanced trials

Would require changes in weed and crop management practices

  • Zero or reduced tillage rely heavily on herbicides for weed control

Reduced return on investment

  • Increase the cost of weed management
  • Loss of yield potential

The number of weeds with herbicide resistance continues to rise

  • Including weeds resistant to multiple modes of action

Development of Herbicide Resistance

How does resistance develop?

The image below demonstrates the interaction between a weed species and a particular mode of action and the development of herbicide resistance at different speeds. It’s clear to see that over time the use of a herbicide quickly changes from being very effective to becoming extremely ineffectual. In fact, by the fifth year of application the herbicide is failing to eliminate herbicide-resistant weeds. It is particularly alarming that there is a dramatic increase in failure rate from the fourth to fifth season.

Development of Herbicide Resistance
% Resistant Weeds in Population Weed Control
0 Application .0001% Excellent
1st Application .00143% Excellent
2nd Application .0205% Excellent
3rd Application .294% Excellent
4th Application 4.22% Excellent
5th Application 60.5% Failure
Source: Weed Science Society of America, 2011

What can you do to delay the onset of herbicide resistance?

  • Don’t rely solely on herbicides for weed control
  • Develop field-specific long-term weed management plans
  • Rotate herbicide groups year over year

General guidelines for herbicide rotations:

  • Avoid repeated use of the same herbicide or herbicides having the same mode of action in the same field year to year
  • Limit the number of applications of a single herbicide or herbicides having the same site of action in a single growing season
  • Use mixtures or sequential treatments of herbicides having different modes of action which are active on the same target weeds whenever possible
  • Use non-selective herbicides pre-seed or pre-emergence to control early flushing weeds (prior to crop emergence) and/or weed escapes

Resistant weed management strategies

  2. Rotate crops as often as possible to utilize the unique modes of action available within the crop.

  4. Time and place fertilizer to benefit your crop, not weeds.

  6. Systematically target problem weeds and respond quickly to changing weed populations.

  8. Scout often and take note of individual weed response to all applications (pre-emergent, post-emergent and pre-harvest).

  10. Make sure you remove all weeds before they set seed – even if you have to pull by hand. Remember the old English proverb: One year seeding, seven years weeding.

  12. Leaving a 1m wide weed-free zone around your cropping fields (so new weeds can’t propagate and expand throughout your fields).

  14. Decrease your row spacing and increase seeding rates to optimize plant populations, maximize crop competitiveness and minimize time to crop canopy closure.

    • Match selection of herbicide(s) with your most difficult weeds.
    • Use full-labelled rates.
    • Include the best tank mixes and adjuvant(s).
    • Use correct spray volume (follow label directions).
    • Use correct nozzle spacing and droplet size.
    • Don’t spray at excess travel speeds, follow label directions.
    • Apply during the best weather conditions (warm, humid, and sunny conditions with minimal wind).
    • Maximize rain-fastness intervals.
    • Time of day (herbicides are most effective when sprayed between 8:00am and 9:00pm).

Related Products

Raxil PRO Shield For cereal growers, there is no better way to get the new crop off to a great start than with Raxil® PRO and Raxil PRO Shield seed treatments.
Learn more
Varro With its powerful ability to win the battle against wild oats, including Group 1-resistant biotypes and other grass weeds. Plus Varro® is much more than a solo act – it contains a "broadleaf booster", which will enhance the performance of all broadleaf herbicides.
Learn more
Prosaro Registered on wheat and barley, Prosaro® fungicide provides the best defense against the broadest spectrum of leaf and head diseases including unsurpassed protection from fusarium head blight (FHB).
Learn more


As one of the only companies who can offer a complete lineup of cereal protection products and program savings, Bayer allows you to harness the full potential of your crop. You can save up to 17% on Infinity® FX when you complete your cereal acre. Learn more