CONQUER® II pre-seed herbicide adds more power to your glyphosate for burndown ahead of seeding canola.

Technical information

Active ingredients:  Group 14 (pyraflufen-ethyl), Group 6 (bromoxynil)
Rainfast:  2 hours (Nufarm supports 2 hour rainfast with CONQUER and CONQUER II)
Treatment area: One case treates 160 acres at 121 mL/ac. One drum treats 640 acres at 121 mL/ac.
Tank-mix order:  CONQUER II, glyphosate
Notes: Canola can be seeded immediately after an application of CONQUER. CONQUER II can be applied up to 3 days after seeding. For best results, spray in the heat of the day. Use adequate water volumes for good coverage of target weeds when weeds are actively growing.

Registered crops

Can be applied pre- or post-seeding before the emergence of these crops:

  • Canola
  • Barley
  • Canary seed
  • Corn
  • Fall rye
  • Triticale
  • Oats
  • Summerfallow
  • Wheat (spring, durum, winter)

Herbicide layering

Weeds controlled with a glyphosate tank-mix

Additional weeds on the label.

  • Annual sow thistle (suppression)
  • Cleavers (including Group 2- and glyphosate-resistant biotypes)
  • Cow cockle (suppression)
  • Narrow-leaved hawk’s beard (suppression)
  • Night flowering catchfly
  • Pineapple weed (suppression)
  • Redroot pigweed (including Group 2- and 5-resistant biotypes)
  • Stinkweed
  • Wild mustard

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 Group 2-. 4, and glyphosate-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 II delivers faster, more complete weed control as a pre-seed burndown ahead of canola compared to glyphosate alone. With two active ingredients and two separate modes of action, and when tank-mixed with glyphosate, weeds face a triple action threat. This all-in-one formulation controls hard-to-kill weeds including kochia, cleavers, and volunteer canola.


  • EXCELLENT WEED CONTROL including all Group 2-, Group 4- and glyphosate-resistant biotypes of volunteer canola, kochia and cleavers
  • NON-RESIDUAL ACTIVITY eliminates any risk to the emerging canola crop
  • NEW CONVENIENT all-in-one formulation (CONQUER II) will make load times quicker at spraying time
  • The best burndown products 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 to young, actively growing weeds that are less than 5 cm tall or across, for best results. Thorough coverage of target weeds is essential.

  1. 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
  2. Water volume – use 10 gal./ac. water volume for adequate coverage


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