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Announcement

🔔 After 24 years of continuous USDA NIFA cooperative agreement support, delays in the next funding opportunity have required NPDN to strategically scale back operations. Remaining funds under a no-cost extension are being used to preserve critical infrastructure and sustain essential national functions. As of September 1, 2026, network activities will be paused or operate at reduced capacity, with full operations expected to resume when the next cooperative agreement and associated funding are in place.

Announcement

Phytophthora ELISA - Agdia Product Notification
Thu, 08/13/2026 - 15:12
Request for isolates of Phytophthora nicotianae from Annual Vinca (Catharanthus roseus)
Thu, 04/30/2026 - 08:57
NEW Webinar Series: Cucurbit Viruses in the United States
Thu, 04/02/2026 - 14:08
Conference on Soilborne Plant Pathogens and California Nematology Workshop - Registration Open
Thu, 01/22/2026 - 17:48
Now Accepting Speaker Submissions for the 2026 GPDN Webinar Series
Mon, 12/01/2025 - 12:07
Save the date: Conference on Soilborne Plant Pathogens - March 24-26, 2026
Mon, 10/27/2025 - 11:48
Congratulations to Recently Accredited Labs!
Wed, 10/01/2025 - 15:13
Registration for the 2026 PPCDL and MFIT Workshops will be opening very soon!
Fri, 09/26/2025 - 10:36
USDA mycology lab searching for specimens of Pseudocerradoa on Monstera (repost)
Tue, 03/25/2025 - 15:32
Registration Now Open for the 2024 PPCDL-Advanced Diagnostic Workshops
Wed, 11/01/2023 - 10:57

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NPDN supports plant health and biosecurity in U.S. agricultural and natural ecosystems by providing expert diagnostic capacity, communication, coordination, and quality pest and disease diagnostic information.

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