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Diagnosis and Management of Potato Tuber Diseases

Carol MacNeil, Extension Vegetable Specialist
Cornell Vegetable Program

December 19, 2013

Diagnosis and Management of Potato Tuber Diseases
A seven page color fact sheet on the Diagnosis and Management of Potato Storage Diseases is now available online from the University of Idaho (by N. Olsen, J. Miller and P. Nolte, University of Idaho, CIS1131). The diseases covered are those which NYS potato growers often find themselves dealing with: pink rot, Pythium leak, late blight, Fusarium dry rot, bacterial soft rot, silver scurf, black dot, and early blight. In addition to assisting with the proper identification of the diseases, there is information on sanitation of equipment and the storage, and recommendations on how to hold lots with some disease if you can't sell them immediately. 

Click on the PDF below to see the full fact sheet.

Diagnosis and Management of Potato Storage Diseases (pdf; 485KB)

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Upcoming Events

Eden Area Winter Vegetable Meeting

Event Offers DEC Credits

February 4, 2026
North Collins, NY

Join us for a mix of industry updates, crop protection talks, pesticide safety programming, and fertility management discussions. This meeting is jointly hosted by the Cornell Vegetable Program and Timac Laing-Gro. 

1.25 DEC credits available in CORE plus 1.75 in 1a and 23.

View Eden Area Winter Vegetable Meeting Details

Orleans Regional Winter Vegetable Meeting

Event Offers DEC Credits

February 9, 2026
Albion, NY

Topics include: Breeding and evaluating tomatoes to control disease and improve yield, jar testing and ensuring spray water quality, breaking down organic matter, FSMA updates and Q&A with Ag & Markets, and industry updates. Includes hands-on learning, coffee break, and sponsor booths. 

DEC credits available: 1.0 in CORE plus 0.5 in 1a, 10 or 23

View Orleans Regional Winter Vegetable Meeting Details

Good Agricultural Practices (GAPs) Food Safety Training

March 10, 2026
Newark, NY

Learn about food safety on the farm! This event hosted by the Cornell Vegetable Program, Cornell Lake Ontario Fruit Team, CCE Wayne County, and the NYS Department of Agriculture, will cover good agricultural practices (GAPs) to help reduce the risk of microbial contamination on the farm, keeping food and consumers safe.

View Good Agricultural Practices (GAPs) Food Safety Training Details

Announcements

2025 Year in Review

Our 2025 Year in Review and 2026 Preview report highlights some of the many research and educational programs led by our team in 2025. Plus, we provide a sneak peek at some of our plans for 2026!
  • Integrating Laser Weeders into Muck Onion Production
  • Cornell Vegetable Program Advances Cover Crop Research
  • New, Interactive Pesticide Safety Programming Protects Farmer Health
  • Specialty Potato Variety Trial Tests Varieties During a Hot Growing Season
  • Mushroom Enthusiasm Grows
  • Equipping Sweet Corn Growers for an Emerging Disease: Tar Spot
  • Farm Food Safety Educational Outreach
  • Sustainable Pest Management for New York Urban Farmers
  • In 2026...


Cornell Crop and Pest Management Guidelines Paused

From Cornell IPM:

Highlighting its commitment to quality and long-term sustainability, Cornell Integrated Pest Management's Pesticide Safety Education Program has announced a pause in production of the 2026 Cornell Crop and Pest Management Guidelines.

Cornell IPM Director Alejandro Calixto said this temporary measure is the result of a comprehensive reimagining process facilitated by Illume Projects of Ithaca, which included end-user interviews, internal surveys and sales data analytics.

"It became clear to us that we cannot continue producing the guidelines and fully restructure them at the same time," Calixto said. "By pausing production, we can dedicate all available resources and time to rebuilding the production process, ensuring that when we re-launch in 2027, the guidelines will reflect a modernized approach built around the grower and other user experience."

A series of annually updated reference manuals produced by Cornell IPM and the College of Agriculture and Life Sciences (CALS), the Cornell Crop and Pest Management Guidelines are widely used by farmers, agronomists, crop consultants and extension educators in New York and throughout the Northeast. They include information about current IPM recommendations, pesticide options, cultural practices, nutrient management, disease, insect and weed identification and resistance-management strategies.

Calixto and Pesticide Safety Education Program Lead Mike Helms will spearhead efforts to restructure the guideline process over the next 12 months, with a goal of launching a more streamlined, user-friendly version in 2027.

Limited copies of the 2025 guidelines remain available for purchase while supplies last through The Cornell Store. The 2026-2027 Greenhouse Guidelines will be available.

For more information contact Helms at mjh14@cornell.edu.


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