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Weed Control Challenge

In-season competition from wild oats and tough broadleaf weeds
Wheat faces tough competition every season from weeds. Wild oats and tough-to-kill broadleaf weeds top the list for freeloaders looking to steal vital nutrients and yield from your wheat crop. There are a lot of choices for post-emergent weed control. Choosing the best combination for your weed conditions can be confusing.

Nufarm Solution

Four active ingredients for one-pass weed control
Signal® FSU delivers winning control in the battle against weeds in wheat. Its four active ingredients (Group 1, 2 and 4) make Signal FSU a superior all-in-one post-emergent wheat herbicide – with the most trusted graminicide on the market and the number one broadleaf active ingredient. Weeds can’t win with Signal FSU.


  • All-in-one. Superior, post-emergent wheat herbicide
  • Wild oats. Trusted, proven graminicide for wild oat and foxtail control
  • Broadleaf weeds. Controls problem broadleaf weeds with fluroxypyr, the leading active ingredient in broadleaf control in Western Canada plus the proven benefits of two SU actives for enhanced support


  • Great combination product that handles most weed problems in wheat
  • Contains more fluroxypur than the competition, to help fight Group 2-resistant weeds like cleavers and kochia
  • Two modes of action target broadleaf weeds to help slow resistance development
  • Contains the most trusted wheat graminicide on the market


  • Active ingredients: 
    • Group 1 (clodinafop)
    • Group 2 (tribenuron, thifensulfuron)
    • Group 4 (fluroxypyr)
  • Rainfast:
    • 4 hours
  • Treatment area:
    • One case treats 40 acres
  • Tank-mix order: 
    • Boost
    • Signal
    • Enhance
  • Crop staging:
    • 2 leaf – prior to emergence of 4th tiller
  • Notes:
    • Always follow tank-mix order


  • Wheat (spring, durum)


Grass weeds

  • Barnyard grass
  • Foxtail (green or yellow)
  • Persian darnel
  • Volunteer canary seed
  • Wild oats
  • Volunteer tame oats

Broadleaf weeds

  • Annual smartweed (green smartweed, lady’s-thumb)
  • Ball mustard
  • Canada thistle (suppression)
  • Chickweed
  • Cleavers
  • Common groundsel
  • Corn spurry
  • Cow cockle
  • Flixweed
  • Hemp-nettle
  • Kochia
  • Lamb’s-quarters
  • Narrow-leaved hawk’s-beard
  • Redroot pigweed
  • Sow thistle (suppression)
  • Stinkweed
  • Stork’s-bill (suppression)
  • Tartary buckwheat
  • Volunteer canola (excluding Clearfield®)
  • Volunteer flax
  • Volunteer sunflower
  • Wild buckwheat
  • Wild mustard
  • Round-leaved mallow (suppression)
  • Russian thistle
  • Scentless chamomile (suppression)
  • Shepherd’s purse


  • 2,4-D Ester 700
  • MCPA Ester 600