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November 21, 2025 22 mins

In this episode of Idaho Seed Podcasts, we dig into one of Idaho agriculture’s most pressing weed threats: Palmer amaranth. This fast-spreading, herbicide-resistant pigweed has already invaded thousands of acres in the state and poses serious risks to sustainable farming. Based on University of Idaho research and Extension efforts, we explore:

  • How Palmer amaranth is outsmarting herbicides through rapid resistance
  • How to identify Palmer amaranth in the field (key traits and clues)
  • How it spreads — from equipment to birdseed
  • Effective control strategies beyond chemicals, including crop rotation, sanitation, and cultural practices
  • The role of Extension and research in developing new tools and authorizations
  • Why this weed invasion may be a wake-up call for more resilient agricultural systems

To Contact Dr. Albert Adjesiwor: Click Here

To Read the Original Article: Click Here

To Contact your Local Extension Office: Click Here

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This episode was generated using artificial intelligence to ensure clarity and engagement. However, all content is reviewed by University of Idaho Extension experts, including the voices you hear at the beginning and end of each episode, to guarantee accuracy and relevance.​

Idaho Seed Podcasts releases new episodes every 2–3 weeks, offering accessible insights into agricultural topics and research from the University of Idaho Extension. Perfect for listening on the tractor or during your daily routine.​

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