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​NEW! From the American Phytopathological Society

New Course: Developing & Validating Seed Health Assays

Deepen your seed health knowledge with our newest course in the Seed Pathology Series! Perfect for researchers, industry pros, and regulators, this course dives into robust seed assay development, real-world examples, and validation methods.

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APS’s Green Initiative: Paperless Renewals

In alignment with our sustainability efforts, APS is going fully paperless with membership renewals, starting with January 1, 2025 renewals (for terms 1/1/25 – 12/31/2025). We will no longer automatically mail printed invoices. If you need a paper version of your invoice, please email us at apshq@scisoc.org, and we’ll be happy to provide it. Thank you for supporting our efforts to reduce paper waste and build a sustainable future. ​

Plant Health 2025

Save the Date!

Mark your calendars for Plant Health 2025! Join APS and a diverse community of plant health experts August 2–5 in Honolulu, Hawaii, to foster collaboration, share knowledge, and promote innovative strategies to enhance global plant health.

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Advance the science of plant pathology an​​​d become an APS member today!​​​

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​​Webinars

Free for Members

Advance your understanding in plant pathology and related disciplines with our webinars. Catch up on content whenever you want with our webinar archive.

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NEW! Research Forums

Stay Tuned for Our Next Session​!

Research forums are designed to foster discussion and feedback about new research in all disciplines of plant pathology.

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On-Demand Course

Seed Pathology Fundamentals: Regional to Global Implications

Gain knowledge on topics ranging from disease management to seed trade policies, and everything in between.

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​​​Plantopia Podcast

Trending Topics and Experts

Listen monthly​ to episodes with the industry's best & brightest.​

Our Latest Episode:

Retrieving Data

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Emerging Research

​​Biorational Fungicides to Manage Cucurbit Powdery Mildew on Winter Squash in New York

Cucurbit powdery mildew (CPM) is a common disease in winter squash, and while conventional fungicides are widely used, there is a growing interest in organic alternatives due to environmental and resistance concerns. This study evaluated several biorational fungicides, with copper-based products like Kocide 3000-O proving the most effective, followed by Theia and Regalia plus Stargus. These treatments reduced disease severity, which may be used to inform CPM management practices and the development of future tools for IPM strategies.

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