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MCPA

Type: Herbicide

Mode of Action: Mimicking the plant hormone auxin

Common Product Names: Triad & Trimec

What is it?

MCPA (2-methyl-4-chlorophenoxyacetic acid) is a member of the phenoxy family of herbicides. It is a selective postemergent herbicide. It has been used since the 1940s to control broadleaf weeds in cereal crops, pastures, and turf. MCPA is effective against a wide range of broadleaf weeds without harming grasses, making it a valuable tool in agriculture and lawn care.

How does it work?

MCPA works by being absorbed through the leaves and roots of weeds. Once inside the plant, it interferes with normal cell growth and division, mimicking the action of natural growth hormones (auxins). This disruption leads to uncontrolled growth, which eventually kills the weed. MCPA is primarily used as a post-emergent herbicide, meaning it is applied after the weeds have emerged.

Benefits

  • Effective Broadleaf Weed Control: MCPA selectively targets broadleaf weeds, ensuring grasses and other desired plants remain unharmed.
  • Post-Emergent Application: It is effective on weeds that have already emerged, making it useful for managing established infestations.
  • Quick Results: Visible effects can be seen within a few days of application, with weeds typically dying off within 2-3 weeks.
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    Products With MCPA

    •

      Change Up Herbicide

      Nufarm
      Active Ingredient:
      MCPA: 41.68% Fluroxypyr: 4.17%
      $375.00 - $375.00
      $375.00
      $375.00 - $375.00
      $375.00
      in stock

      $375.00 - $375.00
      $375.00
      $375.00 - $375.00
      $375.00
    • MCPA Ester | 2.5 Gallons

      MCPA Ester

      Albaugh
      Active Ingredient:
      MCPA: 67.9%
      $114.95 - $114.95
      $114.95
      $114.95 - $114.95
      $114.95
      in stock

      $114.95 - $114.95
      $114.95
      $114.95 - $114.95
      $114.95
    • Triad Select Herbicide | 2.5 Gallons
      Sale Sale

      Triad Select Herbicide

      Prime Source
      Active Ingredient:
      24-D Amine: 30.89% MCPA: 8.23%
      $106.95
      $34.95 - $106.95
      $106.95
      $34.95 - $89.95
      $34.95 - $89.95
      $34.95
      in stock

      $106.95
      $34.95 - $106.95
      $106.95
      $34.95 - $89.95
      $34.95 - $89.95
      $34.95
      Sale Sale
    • Triad T Select | 2.5 Gallons

      Triad T Select

      Prime Source
      Active Ingredient:
      24-D Amine: 30.89% MCPA: 8.23%
      $169.95 - $169.95
      $169.95
      $169.95 - $169.95
      $169.95
      in stock

      $169.95 - $169.95
      $169.95
      $169.95 - $169.95
      $169.95
    • Trimec 992 | 2.5 Gallons

      Trimec 992

      PBI Gordon
      Active Ingredient:
      24-D Amine: 30.56% MCPA: 8.17%
      $118.00 - $118.00
      $118.00
      $118.00 - $118.00
      $118.00
      in stock

      $118.00 - $118.00
      $118.00
      $118.00 - $118.00
      $118.00

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