Fierce® EZ is a liquid pre-emergent soil active herbicide that offers extended activity on emerging spring broadleaf and grassy weeds for up to 8 weeks after activation in pulses, soybeans and wheat.

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Technical information

Active ingredients:  Group 14 (flumioxazin), Group 15 (pyroxasulfone) 
Treatment area:  180 mL/acre, one case treats 80 acres
Application timing:  Fall apply as late as possible but prior to freeze up for any registered crop. Pre-emergent for soybeans, chickpeas and field peas. Should be applied a minimum of 7 days prior to seeding field corn, spring wheat and winter wheat. Can be applied up to 3 days after seeding soybeans, chickpeas and field peas
Tank-mix order:  Fierce EZ, BlackHawk or GoldWing (if used), glyphosate
Notes:  Seeding after application requires the use of minimum to zero till drills. Fierce requires moisture to activate in the soil

Registered crops

  • Chickpeas
  • Field corn
  • Field peas
  • Lentils (fall application prior to large green and small red varieties)
  • Soybeans
  • Spring wheat (not including durum)
  • Winter wheat

Weeds controlled

  • Annual sow-thistle
  • Barnyard grass
  • Canada fleabane
  • Chickweed
  • Cleavers (including Group 2- and glyphosate-resistant biotypes)
  • Common ragweed
  • Dandelion
  • Downy brome (suppression)
  • Eastern black nightshade
  • Foxtail barley (suppression)
  • Green foxtail (including Group 1- and 2-resistant biotypes)
  • Green and redroot pigweed (including Group 2- and 5-resistant biotypes)
  • Hairy nightshade
  • Japanese brome (suppression)
  • Kochia (including Group 2-, 4- and glyphosate-resistant biotypes)
  • Lamb’s-quarters (including Group 2-, 5- and glyphosate-resistant biotypes)
  • Large crabgrass
  • Palmer amaranth
  • Pennsylvania smartweed
  • Russian thistle (suppression)
  • Velvetleaf
  • Volunteer canola (suppression)
  • Waterhemp (including Group 2-, 5-, and glyphosate-resistant biotypes)
  • Wild buckwheat
  • Wild mustard (including Group 2-resistant biotypes)
  • Wild oats (suppression)


  • BETTER PERFORMANCE than other leading soil active herbicides on tough broadleaf weeds
  • ACTIVITY ON GRASSY WEEDS with a different mode of action to manage Group 1- and 2-resistant biotypes
  • EXTENDED CONTROL with activity that lasts up to 8 weeks
  • TWO ACTIVE INGREDIENTS (proven Group 14 and 15) for management of Group 1-, 2-, 4-, 5- and glyphosate-resistant weeds
  • Convenient application eliminates the need for granular broadcast herbicide products

Performance tips

  1. Emerged weeds – use with a burndown herbicide partner like glyphosate and BlackHawk or GoldWing
  2. Flushing weeds – residual activity for newly emerging weeds
  3. Application flexibility – Fierce EZ alone can be applied up to 3 days post-seeding soybeans, chickpeas and field peas
  4. DO NOT incorporate after application or prior to seeding
  5. Pre-seeding applications require the use of minimum disturbance seeding systems
  6. Leave a small checkstrip in the field to show performance


Grower Testimonial – Megan Moore

FOR specific crop usage information see label for details