Walnut Blackline with Kari Arnold

Dr. Kari Arnold (UCCE Orchard and Vineyard Systems Advisor) discusses both the history and current state of walnut blackline in California. You can learn more about blackline at UC IPM.

Thank you to the Almond, Pistachio, Prune, and Walnut Boards of California for their kind donations. Thank you to Muriel Gordon for the music.

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