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The Best Liberty® Yet

Liberty ULTRA Herbicide

Liberty® ULTRA herbicide features Glu-L™ technology, the first resolved isomer of glufosinate in the U.S. row crop market. It’s the next-generation solution for the next-generation farmer, delivering more efficient performance across nearly all soybean, cotton and canola trait systems. Your future success starts with Liberty ULTRA herbicide.

   

Benefits of Liberty ULTRA Herbicide

Better Weed Control

  • New Liberty® Lock formulation locks 3x more herbicide into pigweed vs generic glufosinate1
  • Wins 9 out of 10 head-to-heads and provides 20% superior weed control versus generics2
  • Half as likely as a generic glufosinate to require a respray2

Easier Handling

  • Optimized 34 oz/acre max use rate boosts efficacy and helps protect ROI
  • Every gallon of Liberty ULTRA herbicide covers 50% more acres than generics at max rates

Backed by the Best

  • BASF triple tests our Liberty products to ensure every gallon consistently performs
  • The BASF industry leading R&D investment is how innovations like Liberty ULTRA herbicide are discovered
  • The BASF local sales team continues to be rated #1 by farmers3

Liberty ULTRA Herbicide Documents

Use the links on this page to view or download labels, Safety Data Sheets (SDS) and other resources to support safe and compliant product use.

Document Downloads

Downloads and Resources

LABELS & SDS

   

Stories From the Field

 

Across the country, farmers are confirming what we already knew. Liberty ULTRA herbicide delivers performance, efficiency and trust in every field.

   

The Glu-L Technology Advantage

  • Refines Glufosinate: A patented process transforms inefficiencies in glufosinate, making space in the formulation for Glu-L technology to deliver greater performance at reduced use rates compared to generics.
  • Boosts Efficiency: Lower use rates improve operational efficiency, helping applicators cover more acres and make more timely applications.

Racemic Glufosinate

Generic formulations contain both active L-isomers and inactive D-isomers.

Glu-L Technology

Isolates and transforms D-isomers into active L-isomers.

Resolved Isomer of Glufosinate 

Liberty ULTRA herbicide delivers a significantly more efficient product.

  

The Liberty Lock Formulation Difference

The Liberty Lock Formulation, designed specifically for Liberty ULTRA herbicide, improves performance by boosting droplet coverage, dispersion and retention, ultimately driving 3x more active ingredient into pigweed vs generic glufosinate.1

 

Frequently Asked Questions

Product Profile

What is the active ingredient in Liberty ULTRA herbicide? What is the Mode of Action?

Liberty ULTRA herbicide is a Group 10 herbicide, containing L-glufosinate-ammonium, along with a patented surfactant blend.

On what crops is Liberty ULTRA herbicide registered?

Liberty ULTRA herbicide is available for use on canola, corn, sweet corn, cotton, soybeans and sugarbeets.

Does Liberty ULTRA herbicide have a residual?

No, Liberty ULTRA herbicide does not contain a residual. BASF recommends Liberty ULTRA herbicide be used as part of a total systems approach, including pre- and post-residual herbicides with multiple, effective modes of action (MOA).

What weeds are controlled by Liberty ULTRA herbicide?

Liberty ULTRA herbicide kills broadleaf, grassy, biennial and perennial weeds. Please refer to the label for a complete list.

Does Liberty ULTRA herbicide kill grasses?

Yes, Liberty ULTRA herbicide kills 30 different types of grasses, including bluegrass, crabgrass, foxtail, signalgrass, stinkgrass and witchgrass.

Application and Perfomance

What is the recommended use rate for Liberty ULTRA herbicide?

When applying post-emergence, BASF recommends 24 fluid ounces per acre, with a spray volume of at least 20 gallons of carrier per acre and a nozzle droplet size of medium-to-coarse for good coverage. Refer to the label for complete guidelines.

What is the best time of day to spray Liberty ULTRA herbicide?

Liberty ULTRA herbicide is a light-activated herbicide. Apply two hours after sunrise and two hours before sunset for maximum efficacy. Sunlight is the main driver of its weed activity.

How long before Liberty ULTRA herbicide is rainfast?

Liberty ULTRA herbicide is rainfast four hours after application for most weed species.

Mixing and Equipment Guidance

What are the appropriate mixing instructions for Liberty ULTRA herbicide (by crop)?

Follow the D.A.L.E.S. method: Dry products → AMS → Liquids/SC formulations → Emulsifiable concentrates → Surfactants. This ensures compatibility and avoids downtime.

What are the recommended nozzles to use for the best coverage of Liberty ULTRA herbicide (by crop)?

Choose nozzles based on speed and pressure that deliver medium-to-coarse droplets for thorough coverage.

   

Crop Program Recommendation

Liberty ULTRA herbicide is a flexible knockdown option for soybean, cotton and canola acres. For long-term performance, use it in a robust herbicide program that includes pre- and post-emergence residuals and multiple effective MOA.

Soybean (Enlist® E3)

By using Liberty ULTRA herbicide as part of the Enlist E3 system, farmers will obtain superior weed control and do their part to sustain long-term efficacy. Additionally, they should include layering their residual herbicides and incorporate multiple, effective herbicide modes of action (MOA).

Soybean (XtendFlex®)

Liberty ULTRA herbicide should be used as part of the total XtendFlex system approach with the addition of pre- and post-residual herbicides as well as multiple, effective herbicide MOA.

Cotton

Liberty ULTRA herbicide is available for across today's cotton trait platforms, including Axant™ Flex, Enlist, GlyTol®, LibertyLink and XtendFlex, and should be used as part of a comprehensive, integrated weed management program that includes pre- and post-residual herbicides.

Canola

Liberty ULTRA herbicide use on InVigor® canola hybrids with the LibertyLink trait provides an excellent means for growers to rotate non-selective herbicide systems to effectively manage tough-to-control weeds.

Corn

The LibertyLink system couples high-performing genetics with the superior performance of Liberty ULTRA herbicide, resulting in superior weed control of tough-to-control and resistant weeds for high corn yields that deliver.

  

  

Always read and follow label directions. Liberty ULTRA is not registered for use in all states. Glu-L is a trademark and Liberty is a registered trademark of BASF. ©2026 BASF Agricultural Solutions US LLC. All Rights Reserved.

 

¹ BASF lab and growth chamber study to evaluate penetration and absorption of glufosinate formulations, 2023
² BASF sponsored field research trials 2022–2023, 52 trials, nationwide
³ Stratus Farmer survey 2021–2023