Late this summer, growers and pest control advisors should contact their local agricultural commissioner’s office if they find carpophilus beetle damage when they do their windrow sampling.
Carpophilus beetle damage. Photo credit: Mel Machado
sampled. ”The most apparent sign is a fine, powdery white frass on the nut, which results from beetle larvae tunneling into the kernel,“ he said. ”If you blow that frass away, you might see a circular hole in the shell where the adult beetle chewed through to lay its eggs. Inside, the larvae create distinctive oval-shaped tunnels in the kernel itself.“
Carpophilus beetle damage on Nonpareil. Photo credit: Mel Machado
Wilson is part of a team that, last year, developed a pest identification guide to help growers differentiate
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carpophilus beetle damage from other pests, such as navel orangeworm or ants.
Securing Support for Growers To address the growing concern, the Almond Alliance continues to work with officials at both the state and federal levels. ”This engagement is expected to lead to more coordinated and robust interventions, mobilizing the necessary support and funding to mitigate the impact of beetle infestations on ecosystems, agriculture, and local economies,“ Rodriguez said. Article contributed by the Almond Board of California
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MARCH–APRIL 2025
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