Herbicide Classification

This lesson focuses on understanding the classification system into which herbicides are organized. Terms of classification, classification hierarchy, examples of classification, and a brief overview of the eight modes of action are all discussed in this lesson. Once this is understood it is much easier to grasp similar herbicides and know why they may exhibit certain symptoms to weeds and plants alike. Objectives: (1) Understand how herbicides are classified and why it is important for managing herbicide resistance; (2) Understand the importance of classification and herbicides by mode of action rather than chemical family; (3) Be able to tell the difference between mode of action and site of action; (4) Be able to differentiate between herbicide families, modes of action, and sites of action; and (5) Understand common name, trade names, and sites of absorption. Overview This lesson focuses on herbicide classification as a basis for understanding herbicide-plant interactions including herbicide resistance management. Plant and weed response to herbicides are characterized in the context of classification. The herbicide classification system will be examined and an overview of the eight herbicide mode of action groupings provided. Objectives 1. Understand how herbicides are classified and why it is important for managing herbicide resistance. 2. Classify herbicides by mode of action rather than chemical family. 3. Know the difference between mode of action and site of action. 4. Differentiate between herbicide families, modes of action, and sites of action. 5. Understand common name, trade names, and sites of absorption. Modules: Lesson home Introduction for Herbicide Classification Where it all began Herbicide Classification Terminology How the System Works The Eight Modes of Actio