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Clearfield® sunflowers offers you the first non-GMO and herbicide-tolerant sunflower production system in Canada. Now you can increase your profit potential through exceptional seed genetics and superior weed control.

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Weed Management

Weed control and suppression when Solo® is applied at the 40 acre rate

Weed Type Solo
Barnyard Grass Control
Green foxtail (wild millet) Control
Persian darnel Control
Volunteer barley Control
Volunteer canary seed Control
Volunteer durum wheat Control
Volunteer spring wheat* Control
Volunteer tame oats Control
Wild oats Control
Yellow foxtail Control
Japanese brome Suppression
Cow cockle Control
Green smartweed Control
Lamb’s-quarters Control
Redroot pigweed Control
Shepherd's-purse Control
Stinkweed Control
Volunteer canola* Control
Wild mustard Control
Cleavers Suppression
Kochia** (up to 4 whorls) Suppression
Wild buckwheat Suppression

* Non-Clearfield wheat / non-Clearfield canola only
** Does not include Group-2 resistant Kochia

AgSolutions Customer Care

Got questions? Talk to our team of experts to get the best advice and solutions for your needs and operation.

AgSolutions Rewards

Take advantage of the AgSolutions Rewards Program and maximize your savings on premium BASF crop solutions products.


Uncompromising seed genetics

Clearfield® sunflowers offer the same great agronomics of conventional oilseed and confectionary sunflower varieties with the added benefits and flexibility of herbicide tolerance.

Six Clearfield sunflower varieties are now available. Each includes leading agronomic traits and yield characteristics that include tolerance to Clearfield herbicides.

Clearfield sunflowers are recognized worldwide as non-GMO.

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Common Questions

What crops can be grown the year after using SOLO herbicide?

The following crops can be grown the year after using SOLO herbicide:

  • Canary seed
  • Durum wheat
  • Spring barley
  • Field peas
  • Spring wheat
  • Winter wheat
  • Tame oats
  • Flax
  • Canola
  • Clearfield canola
  • Lentils
  • Clearfield lentils

Does a grower have to sign a Clearfield Commitment?

Yes. The Clearfield® Commitment is an agreement between the grower and BASF that outlines both parties’ responsibilities and serves as an annual license to access the benefits of proprietary Clearfield technology. By signing the Commitment, a grower is eligible for BASF crop protection product discounts through the AgSolutions® Rewards Program.

In addition to the cost of the seed, there is a Clearfield Commitment Fee associated with the purchase of Clearfield sunflower seed, equal to $7/acre. This fee supports continued investment, development and acceleration of BASF trait-based innovations (i.e. more Clearfield crops, hybrids, varieties and herbicides), ultimately ensuring the delivery of more innovative products and opportunities for growers.

Can a grower re-seed Clearfield sunflower seed?

No. In accordance with the Clearfield Commitment for Clearfield sunflowers, growers must not re-grow themselves, or supply Clearfield sunflower seed to other growers or users for production in future years. Certified Clearfield sunflower seed must be purchased for each year of production from a Clearfield retailer, and a Clearfield Commitment form must be signed for the seed purchased.

Are the Clearfield sunflower varieties genetically engineered?

No. All Clearfield crops, including Clearfield sunflowers, are developed using the same traditional plant-breeding methods that have been used to develop commercial crop varieties for decades. As a result, Clearfield crops are internationally recognized as non-genetically engineered, since they contain no introduced genetic material, thus eliminating any marketing barriers.

Which herbicides can be used on Clearfield sunflowers?

Clearfield sunflowers have herbicide tolerance to SOLO® herbicide.

Will additional herbicides be registered for use on Clearfield sunflowers?

As part of the BASF commitment to the development of new innovations, such as new variety and herbicide options, Clearfield sunflower growers can anticipate new Clearfield sunflower herbicide options over the next few years as the system continues to develop.

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New evergreen Clearfield Commitment for sunflowers

All growers who grow Clearfield® sunflowers are required to sign a Clearfield Commitment Form for sunflowers. The Clearfield Commitment is the cornerstone of our dedication to sound stewardship.

Beginning in the 2015 growing season, The Clearfield Commitment has now changed from a yearly Commitment to an evergreen Commitment. This means that growers who signed a Commitment in 2015 will not be required to sign again in the future. Similar to previous years, growers must sign and have the Commitments submitted by July 7, 2017.

The Clearfield Commitment serves as a license for the use of Clearfield technology. This helps BASF protect the integrity of The Clearfield Production System so that it will be available for growers to use for years to come, and also support the development of future Clearfield sunflower varieties.

The agreement ensures your Clearfield seed will fully express its herbicide agronomic traits that allow for crop safety and yield potential

By signing the Clearfield Commitment Form for sunflowers, you not only gain access to valuable Clearfield technology, but you also may qualify for AgSolutions® Rewards.

Key terms of the agreement

The grower agrees to:
  • Use Clearfield certified sunflower seed each year to plant a single commercial crop
  • Pay the $7/acre Clearfield Commitment Fee
  • Not supply Clearfield sunflower seed to other growers or users for production in future years
  • Dispose of and/or sell as commercial oilseeds, any seed covered under the agreement and not use it for planting a subsequent crop

Key benefits

  • Assurance of the Clearfield trait, germination, vigor, and purity of the seeds
  • More marketing opportunities because Clearfield sunflower is internationally recognized as non-GMO
  • Accelerated trait-based innovation by BASF will provide access to new varieties
  • Special grower offers, including AgSolutions Rewards

The Clearfield Commitment Form for sunflowers

You have four options for completing and submitting the form:
  • Electronically sign your Clearfield Commitment form on the BASF Secure Grower Website by clicking on “Create and Search Commitments.”
  • Sign the Commitment form at the retail location you purchased your Clearfield sunflower from.
  • Complete the Clearfield Commitment Form with your BASF Sales Representative
  • Call in to AgSolutions Customer Care at 1-877-371-BASF (2273).

The Clearfield Commitment Fee

An annual commitment fee is charged on all Clearfield sunflower acres. The purpose of this fee is:
  • To support BASF investment in trait-based technology, research and development of high-value, made-for-Canada innovations
  • Helps accelerate these innovations and provide access to new varieties for western Canadian growers


  • Sales period for Clearfield sunflowers and registered chemistry - October 1, 2016 - September 30, 2017
  • Clearfield Commitment Form regular submission - July 7, 2017

For questions related to the Clearfield Commitment Form for sunflowers process, please contact AgSolutions Customer Care at 1-877-371-BASF (2273).

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Solo Ultra

Two modes of action for proven control of grasses and tough broadleaf weeds, with rotational freedom.

Solo ADV

Solo ADV herbicide provides reliable control of tough weeds with rotational freedom, in a new, convenient liquid formulation.


Solo® provides reliable control of tough grassy weeds and targeted broadleaf weeds with rotational freedom.

Heat LQ

Heat® LQ herbicide for pre-seed, pre-emergence and chemfallow applications provides the ultimate burndown in an easy-to-use liquid formulation. 
Heat LQ for pre-harvest applications delivers fast, complete crop and broadleaf weed dry down.



Priaxor® is a more advanced fungicide that helps maximize your crop's yield potential.


Gives you a proactive approach to providing unprecedented disease control.