Skip to main content

SEARCH:

This Site Cornell more options

Search This Site

Home
About
Photo Gallery
- Arugula
- Asparagus
- Basil
- Beans
- Beets and Swiss chard
- Blueberry
- Carrots
- Celery
- Corn (sweet)
- Crucifers (aka brassicas and cole crops)
- Cucurbits
- Dill
- Eggplant
- Garlic
- Horseradish
- Lettuce
- Onion
- Parsley
- Peas
- Peppers
- Potatoes
- Spinach
- Strawberries
- Tomatoes
Research
Extension & Outreach
Site news

Vegetable Pathology – Long Island Horticultural Research & Extension Center

Home
About
Photo Gallery
- Arugula
- Asparagus
- Basil
- Beans
- Beets and Swiss chard
- Blueberry
- Carrots
- Celery
- Corn (sweet)
- Crucifers (aka brassicas and cole crops)
- Cucurbits
- Dill
- Eggplant
- Garlic
- Horseradish
- Lettuce
- Onion
- Parsley
- Peas
- Peppers
- Potatoes
- Spinach
- Strawberries
- Tomatoes
Research
Extension & Outreach
Site news

Photo Gallery

HomePhoto GalleryHorseradish

Horseradish

Cercospora and Alternaria leaf spots

Contact

Margaret McGrath
Associate Professor Emeritus
(retired 5-2-23)
School of Integrative Plant Science
Plant Pathology and Plant-Microbe Biology Section
Long Island Horticultural Research & Extension Center
Riverhead, NY 11901-1098
Email: mtm3@cornell.edu

Need help …

… diagnosing or managing diseases? Contact your local office of Cornell Cooperative Extension. Not from New York? Find your office here. Or find help through the National Plant Diagnostic Network.

News highlights

McGrath featured in A Way to Garden podcast
McGrath featured in A Smarter Fall Cleanup in The New York Times
McGrath travels to China to share insights on cucurbit disease management
McGrath speaks at Mexican conference on disease management in vegetables
Curiosity and expertise earn Excellence in IPM award for Cornell ‘pumpkin whisperer’

Site news

Margaret Tuttle McGrath receives NED-APS Award of Merit
Tomato virus alert
New Basil Downy Mildew Race 1 in NY in 2022
New photo gallery: Turnip mosaic virus on crucifers
New photo galleries

A Way to Garden podcasts:

Meg McGrath is an occasional guest on New York Times garden columnist Margaret Roach’s popular A Way to Garden podcast. Follow the links to listen or read the interview transcript:

Basil and cucurbit downy mildews
What’s wrong with my tomatoes?

Featured

Photo gallery
Vegetable disease factsheets & articles
Managing vegetable diseases organically

Subscribe

Receive site news updates by email.

Please, insert a valid email.

Thank you, your email will be added to the mailing list once you click on the link in the confirmation email.

Your Email

Leave this field blank

Spam protection has stopped this request. Please contact site owner for help.

This form is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Facebook
Twitter
YouTube

Cornell University©2024 University Privacy Web Accessibility Assistance

Skip to toolbar

Search
Log In