15.1 Objectives

Learning Objectives

After completing this chapter, you will be able to:

• Demonstrate how to use the “Take Action” Site of Action classification scheme when choosing herbicides, including Site of Action designation on herbicide labels.
• Describe the role of fatty acids in plant cells.
• Compare fatty acid synthesis and fatty acid elongation, distinguishing between ACCase and elongase enzymes.
• Describe the symptoms seen in susceptible plants to the Lipid Synthesis Inhibitors.
• Describe the symptoms seen in susceptible plants to the Seedling Shoot Growth Inhibitors.
• Summarize weed resistance findings to both the Lipid Synthesis Inhibitors and the Seedling Shoot Growth Inhibitors.
• Define vocabulary words: mode of action, site of action, ACCase, cross resistance, Dims/Fops, long chain fatty acids, safener