Chapter 18: MOA Part 4 – Photosynthesis Inhibitors (PPO & Pigment Inhibitors)

18.1 Objectives

Learning Objectives

After completing this chapter, you will be able to:

  • Describe the uniqueness of these SOA and their use of sunlight.
  • Describe the role of PPO in healthy plants.
  • Explain how PPO inhibitors kill plants.
  • Describe the importance of carotenoids in healthy, growing plants.
  • Explain why carotenoid inhibitors cause bleaching symptoms in susceptible plants.
  • Describe the symptoms seen in susceptible plants to the PPO Inhibitors.
  • Describe the symptoms seen in susceptible plants to the Pigment Inhibitors.
  • Summarize weed resistance findings to both the PPO Inhibitors and the Pigment Inhibitors.
  • Define vocabulary words: PPO, necrosis, photodynamic damage, carotenoid, bleaching, chlorophyll, chloroplast, triplet chlorophyll, singlet oxygen, cell membrane

 

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Principles of Weed Control Copyright © by Deana Namuth-Covert and Amy Kohmetscher. All Rights Reserved.