Fierce® Herbicide

Fierce® Herbicide: Longest-Lasting Residual Weed Control for the Cleanest Fields

Fierce® Herbicide is the only preemergence herbicide that provides up to 8 weeks of residual control on a broad spectrum of tough and resistant broadleaf weeds and grasses, including Palmer amaranth and waterhemp.

  • Protects yields with residual control that lasts up to 8 weeks
  • Contains two effective modes of action to control tough and resistant weeds like Palmer amaranth, waterhemp and annual grasses
  • Controls weeds at a lower labeled rate than the competition

Fierce — Longest Residual Available

Fierce 3 oz/A-56+ Days After Treatment
Authority® XL 5 oz/A-56+ Days After Treatment

How To Use

Rate Field Corn: 3 oz/A plus atrazine where needed
Soybeans: 3-3.75 oz/A
Use higher rate when ghting resistant Palmer amaranth or waterhemp
Timing Field Corn (no-till and reduced-tillage): 7-30 days preplant or fall
Soybeans: Fall burn down, early preplant burn down or up to 3 days after planting
Method Air or Ground

Other Important Information

  • Re-entry interval: 12 hours
  • Max rate/year: Field Corn — 3 oz/A; Soybeans — 3.75 oz/As

Fierce vs. Boundary®

Source: University of Illinois

Fierce Controls Tough and Resistant Broadleaf Weeds and Grasses, Including Palmer Amaranth and Waterhemp

Fierce vs. Authority XL on Palmer Amaranth (56 Days After Treatment)
Fierce vs. Authority XL on Waterhemp (56 Days After Treatment)

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