CONQUER® herbicide is the only pre-seed burndown solution with two active ingredients and two modes of action for use with glyphosate prior to canola.

Technical information

Active ingredients: Group 14 (carfentrazone), Group 6 (bromoxynil)
Rainfast:  2 hours (supported by Nufarm)
Treatment rate:  One case treats 80 acres
Tank-mix order:  Carfentrazone, bromoxynil, glyphosate
Notes: Canola can be seeded immediately after application. For best results, spray in the heat of the day.

Registered crops

  • Canola

Weeds controlled with a glyphosate tank-mix

  • Annual sow thistle
  • Chickweed
  • Cleavers
  • Dandelion (spring germinated)
  • Flixweed
  • Kochia (including Group 2-, 4-, and glyphosate-resistant biotypes)
  • Lamb’s-quarters (including Group 2-, 5- and glyphosate-resistant biotypes)
  • Morning glory
  • Narrow-leaved hawk’s-beard (suppression)
  • Pigweed (redroot, prostrate)
  • Round-leaved mallow (suppression)
  • Russian thistle (up to 5 cm tall)
  • Shepherd’s-purse
  • Smartweed
  • Tansy mustard
  • Volunteer canola (all biotypes)
  • Wild buckwheat


  • FAST BURNDOWN compared to bromoxynil alone
  • EXCELLENT WEED CONTROL including all Group 2 and glyphosate-tolerant biotypes of volunteer canola, kochia and cleavers
  • NON RESIDUAL ACTIVITY eliminates any risk to the emerging canola crop
  • The best burndown product available for use before seeding canola
  • Protects long-term viability of agronomic tools such as glyphosate and glyphosate-tolerant traits
  • No surfactant required when used with glyphosate

Performance tips

CONQUER is a contact herbicide and must be applied directly on growing weeds for effective results.

  • Droplet size – use a combination of nozzle type and sprayer speed to achieve a fine to medium droplet size, adjust sprayer speed to optimize weed coverage
  • Water volume – use 10 gal./ac. water volume for adequate coverage on weeds

Weed control challenge

The growing range of weed control challenges in canola

Glyphosate has been used for years for effective burndown. But with the widespread adoption of glyphosate-tolerant crops like canola and the spread of glyphosate- and Group 2-resistant weeds like kochia and cleavers, growers are now faced with more weed control challenges than ever. Products with a single active ingredient have too narrow a spectrum to control the growing range of weed populations.

Nufarm solution

Complete weed control that’s safe on canola

CONQUER delivers faster, more complete weed control in a canola pre-seed burndown than glyphosate alone. CONQUER has two active ingredients with two separate modes of action, and when mixed with glyphosate, weeds face a triple action threat especially kochia, cleavers, volunteer canola, plus Group 9- (glyphosate) and Group 2-tolerant volunteers.