The Kochia Killer

Thumper® provides reliable and outstanding control of over 26 broadleaf weeds including kochia (including Group 2- and 9-resistant biotypes), Russian thistle and wild buckwheat all while providing excellent crop safety in your wheat and barley. Thumper contains both Group 4 (2,4-D) and Group 6 (bromoxynil) active ingredients, making it an effective resistance management tool. Available in 320-acre Bulk shuttles and convenient 1,000-acre Bulk totes.

Application Guidelines


  • Registered for use in wheat and barley
  • Control of 26 broadleaf weeds including Group 2- and 9-resistant kochia
  • Excellent crop safety
  • No re-cropping restrictions
  • Registered for aerial application
  • Numerous tank-mix options available
  • Effective resistance management – contains Group 4 (2,4-D) and Group 6 (bromoxynil) active ingredients
  • When Thumper® is tank mixed with Varro®, the combination provides three modes of action (Groups 2, 4 and 6) against broadleaf weeds
  • Combining differing modes of action has been identified as a very effective way to manage and reduce the potential for the development of resistant populations.
  • Available in Bulk


Application Tips

0.4 L/ac. (20 ac./jug)


Spring wheat (including durum) and barley may be treated from the 4 leaf stage until the early flag leaf stage. Application before the 4 leaf stage may result in crop injury.


  • 8 L jug = 20 acres (one 2 x 8 L case treats 40 acres)
  • 128 L Bulk shuttle = 320 acres
  • 400 L Bulk tote = 1,000 acres


Water Volume
  • Ground – minimum of 5 US gal./ac. (19 L/ac.)
  • Aerial – minimum of 3 US gal./ac. (11 L/ac.)
  • Bromoxynil is a contact herbicide and coverage is integral for weed control. Where possible, maintain water volumes at minimum levels to ensure control.


One hour after application


Residue and Grazing
Do not graze or cut for forage hay within 30 days after spraying


Re-cropping Intervals
No re-cropping restrictions


Thumper vs. Competitors

Kochia Control


Average of Thumper vs. Average of Attain


Boost Your Broadleaf Control

Tank mix Varro® with Thumper and boost your broadleaf control. This combination contains three modes of action with Groups 2, 4 and 6, making an already strong broadleaf concept even more robust.

Thumper and Varro
Source: 8 internal Bayer trials, 2006.

Resistance Management

Resistance Management

Discover how Thumper® herbicide and its Group 6 mode of action can help you manage costly and damaging herbicide-resistant weeds.

Thumper herbicide – Group 6 has no known resistance in Western Canada

Thumper has two different modes of action (Group 6 and Group 4) making it an ideal resistance management tool for growers with broadleaf resistance concerns like Group 9- and Group 2-resistant kochia. The two active ingredients provide a combination of both systemic and contact activity with exceptional crop safety and no re-cropping restrictions.

  • Powerful control of 26 broadleaf weeds, including Group 2- and Group 9-resistant kochia
  • Group 4 and Group 6 active ingredients make Thumper an effective resistance management tool
  • Dual mode of action provides both systemic and contact activity


Region:  Other

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