Fierce® MTZ Herbicide

Weed Control

Win the War Against Weeds

Win the war against weeds with Fierce® MTZ Herbicide. Fierce MTZ contains three effective modes of action to deliver up to eight weeks of broad spectrum control–outlasting the germination period of tough, resistant small-seeded broadleaves and grasses.

Fierce MTZ Herbicide logo
Get the cleanest fields, no matter what seed system you use, with Fierce® MTZ Herbicide. To give your fields a strong start and protect yields, Fierce MTZ contains three effective modes of action to deliver up to eight weeks of broad spectrum control–outlasting the germination period of tough, resistant small-seeded broadleaves and grasses. Fierce MTZ is a preemergence herbicide that provides effective control with a lower use rate than the competition.

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  • Controls Tough and Resistant Small-Seeded Broadleaves and Grasses
  • Limited Carryover and Rotational Restrictions
  • Liquid Formulation for Easy Mixing, Loading and Consistent Application
  • Protects Fields with Up to 8 Weeks of Residual Control


  • Palmer Amaranth
  • Spiny Amaranth
  • Spurred Anoda
  • Barnyardgrass
  • Florida Beggarweed
  • Annual Bluegrass
  • Downy Brome
  • Wild Buckwheat
  • Carpetweed
  • Cheat
  • Common Chickweed
  • Mouseear Chickweed
  • Hophornbeam Copperleaf
  • Large Crabgrass
  • Smooth Crabgrass
  • Tropic Croton
  • Golden Crownbeard
  • Southwestern Cupgrass
  • Dandelion
  • Eclipta
  • Cutleaf Evening Primrose
  • Giant Foxtail
  • Green Foxtail
  • Yellow Foxtail
  • Goosegrass
  • Henbit
  • Horseweed
  • Hairy Indigo
  • Jimsonweed
  • Seedling Johnsongrass
  • Kochia
  • Common Lambsquarters
  • California Lovegrass
  • Little Mallow
  • Venice Mallow
  • Marestail
  • Entireleaf Morningglory
  • Ivyleaf Morningglory
  • Red Morningglory
  • Scarlet Morningglory
  • Smallflower Morningglory
  • Tall Morningglory
  • Wild Mustard
  • Black Nightshade
  • Eastern Black Nightshade
  • Hairy Nightshade
  • Fall Panicum
  • Texas Panicum
  • Redroot Pigweed
  • Smooth Pigweed
  • Tumble Pigweed
  • Wild Poinsettia
  • Puncturevine
  • Common Purslane
  • Florida Pusley
  • Wild Radish
  • Common Ragweed
  • Giant Ragweed
  • Redmaid
  • Red Rice
  • Italian Ryegrass
  • Rigid Ryegrass
  • Coffee Senna
  • Hemp Sesbania
  • Shepherdspurse
  • Prickly Sida
  • Broadleaf Signalgrass
  • Ladysthumb Smartweed
  • Pennsylvania Smartweed
  • Spotted Spurge
  • Bristly Starbur
  • Teaweed
  • Russian Thistle
  • Velvetleaf
  • Common Waterhemp
  • Biennial Wormwood
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* Each crop and use may not be registered in every state. Always read and follow label instructions.

Key Crops*

  • Bare Ground
  • No-Till Field Corn
  • Reduced Tillage Field Corn
  • Fallow Land
  • Non-Crop Area
  • Conventional Tillage Soybean
  • No-Till Soybean
  • Reduced Tillage Soybean

* Not all crops are registered in every state.

Sustainable Solutions Criteria – Fierce® MTZ Herbicide

Valent U.S.A. has developed a classification system that defines and identifies sustainable practices and attributes applicable to our ag product portfolio across three pillars of sustainability – People, Planet, and Productivity. This system, called Sustainable Solutions Criteria, uses specific icons that highlight these key sustainable practices and attributes for our products. Products that achieve a high sustainable criterion ranking across all three sustainable pillars are also denoted by the Sustainable Solutions Icon. Click on the icons below to learn how Fierce® MTZ Herbicide can support sustainable practices in your operations.


Improves Crop Production Efficiency

Increased yield, yield protection, and/or improved plant health, water and nutrient use that enhance efficiency of crop production.

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IPM Friendly

  • Reduces risk from pests within a science-based decision-making process  that minimizes overall economic, health and environmental risks*
  • New mode of pest control action, and/ or proactive management of pest resistance, including fit within integrated resistance management programs
  • Exotic invasive pest control
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Conservation Tillage

  • Product can be used in conjunction  with no-till or minimum till agriculture practices
  • Product does not limit the ability  for crop rotation or cover crops
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Bayer PLUS Rewards

Fierce MTZ is eligible for the 2022-2023 Bayer PLUS Rewards Program

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John Deere Financial

Fierce MTZ is Eligible for the 2022-2023 Valent U.S.A. Crop Protection Finance Program from John Deere Financial

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Always read and follow label instructions.
Fierce is a registered trademark of Valent U.S.A. LLC.