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Zach Hansen

@plantdiseaseguy.bsky.social

201 followers 286 following 20 posts

Vegetable pathologist at Cornell University

Posts Replies Media

Zach Hansen @plantdiseaseguy.bsky.social · 28/07/2026

Hanging out in The Big Easy #NOLA for the Potato Association of America meeting with @isakoditomassi.bsky.social & Babatunde Kareem. It’s a good time! #PAA

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Zach Hansen @plantdiseaseguy.bsky.social · 01/07/2026

@isakoditomassi.bsky.social is an outstanding science advocate! Happy to see her highlighted here. Good stuff Izzi!

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Zach Hansen @plantdiseaseguy.bsky.social · 25/06/2026

Colorado potato beetles showing up in our potato research plots in Freeville, NY.

Colorado potato beetle adult on potato foliage

Colorado potato beetle larvae on potato foliage

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Reposted by Zach Hansen

The Arabidopsis Information Resource (TAIR) @tairnews.bsky.social · 11/06/2026

"Tenure-Track Faculty Position in Plant Biology at Pennsylvania State University, University Park, PA, USA *Application Deadline: 8/24/2026" Read more here: apptrkr.com/7216427 #PlantSciJobs

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Zach Hansen @plantdiseaseguy.bsky.social · 10/06/2026

Orange rust on wild black raspberry caused by the fungus Arthuriomyces peckianus. Systemic disease, remove infected plants if causing problems.

Orange rust on the underside of black raspberry leaves.

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Zach Hansen @plantdiseaseguy.bsky.social · 17/04/2026

Cedar-apple rust galls in Ithaca NY, a sure sign of spring! This amazing fungus (Gymnosporangium juniperi-virginianae) makes spores each spring that infect apple trees. From there, it makes new spores to reinfect cedar. Quite an evolutionary feat! #PlantDisease #PlantScience

Cedar apple rust galls on cedar producing spores

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Zach Hansen @plantdiseaseguy.bsky.social · 16/04/2026

Seed potatoes getting ready to plant in NY. Most will be planted within a month. #agriculture

Seed potatoes run through a sorting and cutting machine.

Seed potatoes climb a conveyor into a truck.

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Zach Hansen @plantdiseaseguy.bsky.social · 10/04/2026

First diagnostic challenge in the new job. This sample was delivered to my mail box with zero information. Just two potatoes. Eventually figured out where they came from. Fusarium dry rot. #PlantScience #PlantDisease

Fusarium dry rot on potatoes, a dark dry lesion

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Zach Hansen @plantdiseaseguy.bsky.social · 26/03/2026

Huge congratulations to Dr. Kate Turner on passing her PhD defense yesterday! Great work on Phytophthora and Rhizoctonia diseases of tobacco. So glad I got to attend in person, good to be back in Knoxville for a few days. #UTK #UTIA #plantscience

Dr. Kate Turner stands with her advisors after passenger her PhD defense at the University of Tennessee.

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Zach Hansen @plantdiseaseguy.bsky.social · 13/03/2026

Great interview here 👇👇👇 Valuable advice for any graduate students in the sciences. Nice work @papinaani.bsky.social

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Zach Hansen @plantdiseaseguy.bsky.social · 11/03/2026

Green Empire Farms, a world-class 64-acre greenhouse in Oneida, NY. Had the opportunity to tour today with Cornell Extension colleagues. Amazing! #PlantScience

Rows of cherry tomatoes grow in a greenhouse

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Reposted by Zach Hansen

Isako Di Tomassi @isakoditomassi.bsky.social · 10/03/2026

We especially want to thank all of the other SNAPpers and ASAPers who made this possible @erinmorrow.bsky.social @bdavisbio.bsky.social @mjarnett.bsky.social @ashyeneng.bsky.social @jpflores.rbind.io @alexlando.bsky.social @hannaherf.bsky.social @kassstem.com @jonj-udd.bsky.social

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Zach Hansen @plantdiseaseguy.bsky.social · 05/03/2026

Hello friends of science! I’m migrating over here from X. There, I had 3,000 followers enjoying plant pathology content! Please help me rebuild. I’ll post plant disease photos, management info, science & nature content. Kicking off with some tomato late blight caused by Phytophthora infestans.

Tomato leaves with late blight caused by Phytophthora infestans

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