Liberty 150



It’s time to lower the boom on your most serious weeds and combat resistance at the same time. Protect the high yield potential of your canola and the sustainability of your farm.

Adding Liberty® herbicide with its Group 10 mode of action – unique to canola – to your resistance management strategy is a proven way to safeguard your field, farm and livelihood from the devastating effects of herbicide resistant weeds. Watch this video to see how.

Liberty herbicide helps to control Group 1-resistant wild oats and Group 2 and 9-resistant kochia as well as your regular problem weeds. And, together with InVigor® hybrid canola seed, Liberty will also help you produce some of the highest yields in the industry*.

* Source: WWC/RRC Trials

Liberty – The Only Group 10 Herbicide in Canola To Help Fight Glyphosate Resistance!

As a Group 10 herbicide, Liberty’s unique mode of action makes it an excellent resistance management tool by helping reduce the risk of glyphosate resistance and the development of resistant weeds, year after year. And that means increased yields and profits.

Liberty offers unique benefits to InVigor and LibertyLink growers, including:

  • Dependable, fast, broad-spectrum grassy and broadleaf weed control
  • Outstanding crop safety and higher yields
  • Unleashing the high yield-potential of InVigor hybrid canola
  • Two flexible rate options (standard 1.35 L/ac. or higher labelled rate 1.62 L/ac.)
  • The opportunity for a second pass, when required
  • No re-cropping restrictions because Liberty rapidly breaks down in the soil
  • Ability to tank mix with Centurion for increased grass weed control
  • Outstanding crop safety with no risk of carry-over
  • Convenient packaging

Click here for the Liberty 150 Fact Sheet.

Application Tips


Perfecting your "Spray Game" is easy with Liberty herbicide.

To get the most out of your Liberty® herbicide application, watch the videos below and follow through with the illustrated recommendations. It only takes a little finessing to produce great results.

Avoid the water hazards

Because Liberty is a contact herbicide, cutting water volumes comes with a performance penalty. Spray with at least 10 gallons of water per acre to ensure good contact and optimal coverage.

Avoid the water hazards canola herbicide

Equipment selection

Nozzle selection and droplet size are key. To get good coverage, aim for medium to coarse droplets (250 - 350 microns) and avoid spraying under pressure. Try to stay between 40 - 80 psi.

Equipment selection canola herbicide

Optimal conditions

Warm and sunny (10°C or more) is optimal. For maximum Liberty performance, avoid cooler, cloudy and windy conditions, or those with excessive moisture or dryness.

Optimal conditions canola herbicide

Keeping the pace

Don’t rush. Spraying too fast can drastically reduce your control and leave you on the fringe of success. Keep sprayer speeds under 15 mph to avoid drifting off target.

Keeping the pace in canola herbicide

Play tough from the rough

Adding Centurion® herbicide to your Liberty application increases control of difficult grass weeds like wild oats, foxtail barley, volunteer barley and many others.

Add Centurion to control though weeds

Backswing control

Use the same tracks, but reverse your direction of travel on a second pass to help control any weeds that may have been sheltered during your first round.

Help control weeds by reversing directions

Perfecting your "Spray Game" is easy. Follow these simple application tips and you’ll be pleased with the results.

» Download these guidelines here.

Here are a few other sources to help optimize your spray game:

Sprayer tank clean out (video, 3:45)
Selecting the right nozzle (article)
Understanding the effect of pressure drop on coverage (article and video 2:54)


Resistance Management

What Is Resistance?

Herbicide resistance is the elephant in your field. It's the weed species' ability to survive and reproduce even after exposure to a rate of herbicide that would normally be lethal. 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

Resistant weeds thrive on routines so breaking the cycle that enables weed resistance to develop is critical to addressing this potentially devastating problem. Crop rotation and introducing different herbicide mode of actions are all part of an effective resistance management strategy.

Keep in mind that herbicide-resistant individuals are naturally present within a weed population at very low frequencies.

LibertyLink System – A Unique Resistance Management Tool

The unique offering of the LibertyLink® system – including some of the highest yielding InVigor® canola hybrids in combination with Liberty herbicide – gives you one of the best resistance management tools to choose from.

  • Liberty is the only Group 10 herbicide used for in-crop weed control on canola
  • Liberty is an excellent alternative to glyphosate, helping manage risk of Group 9 resistance in Canada
  • When Liberty is tank-mixed with Centurion®, you get 2 modes of action attacking grassy weeds, further helping delay herbicide resistance


Why Is It Important To You?

The management issues and yield concerns with herbicide resistance are very real, especially now with glyphosate-resistant kochia identified for the first time in Western Canada in 2011.

Dr. Hugh Beckie with Agriculture and Agri Foods Canada has said, "Glyphosate has likely delayed the evolution of weed resistance to other herbicides and mitigated their resistance impact. However, farmers need to think carefully about how and when they use glyphosate."

Discover how canola farmer David Torrie has taken effective steps to address resistance in his field.


A Growing Problem Across Western Canada

Glyphosate resistance has been confirmed in all three Prairie provinces. The alarming news is that its rate of incidence continues to increase. Western Canada is still in the early stages of glyphosate resistance. That’s why it’s so important to take action now by adopting effective resistance management practices to slow down the number of acres affected by glyphosate resistance. Check out the map below to see how much glyphosate-resistant kochia has spread since 2011.

Glyphosate Resistant Kochia in Western Canada


Herbicide Resistance – What's The Impact To Farming In 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


How Does Herbicide 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 from the same group quickly changes from being very effective to becoming extremely ineffectual. In fact, by the fifth year of application the herbicide is failing to eliminate the majority of weeds because they are resistant to that group of herbicides. What is particularly alarming is the dramatic increase in failure rate from the fourth to fifth season.



Development of Herbicide Resistance

Treatment % 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 both crops and herbicides
  • Use clean seed
  • For more tips on managing herbicide resistance, visit


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


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Herbicide resistance is everyone's problem. This product is a Mix It Up solution.


Visit for more simple strategies and solutions.

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