Cornell Vegetable Program Enrollment

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  • Pest Management
  • Cultural Practices

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Potatoes

Potatoes Potatoes are grown all across NYS, though the largest farms tend to be located in Western NY, the Finger Lakes Region and on Long Island, on deep, fertile, light- to medium-textured mineral soils, and on muck (organic) soils. Potatoes are grown on small, medium and large farms, for retail, wholesale (east of the Mississippi) and organic markets, for both fresh market and processing into chips, and for certified seed potatoes. Most growers store some of their crop for winter sales. Varieties include round whites, red-skinned potatoes, yellows, and a smaller acreage of a wide variety of specialty types, such as those with blue or red skin and flesh, fingerlings, etc. Potatoes are one of the highest value vegetables in NY, grown on 16,000 acres, with an average value of about $54.9 million recently (2014 Vegetable Summary).

Potatoes have many serious insect and disease pests. Late blight can be a devastating disease, capable of completely destroying an unprotected crop within 3 weeks in wet weather, and rotting the tubers. Late blight was the major cause of the Irish Potato Famine. It also affects tomatoes. New, more virulent strains of late blight fungus began showing up 20 years ago and the disease has been harder to predict and control ever since. Early blight is a common fungal disease on both potatoes and tomatoes which survives over-winter in the soil. Colorado potato beetles can cause serious defoliation if crops are not rotated up to a quarter mile from where they, tomatoes or eggplant were previously planted. They can rapidly become resistant to commonly used insecticides. Tiny, sucking leafhoppers move up from the south each June on weather systems, and can cause severe leaf burn and yield reduction. Aphids can also be a production problem as well as carrying viral diseases that can affect potatoes grown from saved seed. 

Relevant Events

Fresh Market Minutes - Eden Valley

August 1, 2017
9:00 AM - 10:00 AM
Eden, NY

2017 Vegetable Pest and Cultural Management Field Meeting - Chautauqua County

Event Offers DEC Credits

August 8, 2017
6:00 PM
Frewsburg, NY

Fresh Market Minutes - Eden Valley

August 15, 2017
9:00 AM - 10:00 AM
Eden, NY

Fresh Market Minutes - Eden Valley

August 29, 2017
9:00 AM - 10:00 AM
Eden, NY

Most Recent Potatoes Content

Organic Production Guides

Robert Hadad, Extension Vegetable Specialist
Cornell Vegetable Program

Last Modified: July 17, 2017
Organic Production Guides

Organic Production Guides for fruits, vegetables and dairy are available through the NYS Integrated Pest Management (IPM) program. They outline general practices for growing vegetable and fruit crops using organic integrated pest management techniques.

Video: Flea Beetles

Last Modified: June 5, 2017
Video: Flea Beetles

Flea beetles are a common vegetable pest affecting peppers, cucurbits, sweet potato, potato, peas, beans, beets, tomato, corn, turnip, pumpkin, melon, eggplant, and others. This short video gives you some general information about this pest.

Best Management Practices for Dickeya in Potato Production in the Northeast

Last Modified: November 2, 2016
Best Management Practices for Dickeya in Potato Production in the Northeast

Potato seed tubers harboring Dickeya dianthicola are the only confirmed source of this pathogen. It does not appear to be able to survive in soil (including in crop debris) from one growing season to the next. Consequently, rotating with a non-susceptible crop is not a necessary component of the management program. Best management practices listed in the PDF are encouraged to minimize potential losses from Dickeya.


More Potatoes Content

North American Certified Seed Potato Health Certificate (NACSPHC)
Bacterial Blackleg - An Increasing Problem for Potato Growers
Pesticide Options for Pests of Potato in New York, 2016
Canadian and European Varieties for the Fresh Market
2015 NYS Certified Seed Potato Crop Directory
Priaxor: New Fungicide for Upstate NY Growers
Video: New York State Produce Auctions
2014 Upstate New York Potato Variety Trial Report
Control of Colorado Potato Beetle & Insecticide Resistance Management
2014 Potato Disease Management Strategies for Conventional & Organic Production
2014 Potato Fungicide Roster and Ratings with Emphasis on Late Blight Control
Diagnosis and Management of Potato Tuber Diseases
Determining Late Blight Sensitivity to Ridomil Takes Time
Application Equipment for Potato Post-Harvest Disease Control
Late Blight Sample Collection and Submission to Bill Fry, Cornell
O-zone Injury on Vegetables
Armyworms are Poised to Eat Your Vegetable Crops
» View Complete List of Potatoes Content
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Upcoming Events

Muck Donut Hour Every Tuesday

August 1, 2017
8:30 - 9:30 AM
Elba, NY

Meet with Cornell Vegetable Program Specialist Christy Hoepting every Tuesday morning to ask questions and share your observations.
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Fresh Market Minutes - Eden Valley

August 1, 2017
9:00 AM - 10:00 AM
Eden, NY

Meet with the Cornell Vegetable Program Specialist Darcy Telenko every other Tuesday morning to ask questions and share your observations in fresh market vegetables.
view details

2017 Vegetable Pest and Cultural Management Field Meeting - Chautauqua County

Event Offers DEC Credits

August 8, 2017
6:00 PM
Frewsburg, NY

This course will demonstrate pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables; primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and where appropriate, spray options will be used to educate growers. CVP Specialists Judson Reid, DarcyTelenko, and Robert Hadad will instruct participants and facilitate peer-based learning. Details on each topic will focus on field observations at the farm. 
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Announcements

Late Blight Spreading Across WNY Counties

7/19/17 - Late blight (LB) was confirmed in Livingston County on potato this week (the genotype is still being determined). The sample from Erie County from last week was determined to be US-23 which is sensitive to metalaxyl. All of Western NY is at risk for Late Blight infection. Severity values continue build at all stations. The frequent and continuing rainfall has been extremely favorable for the development of LB. Scout fields twice a week. All tomato and potato growers, conventional and organic, should be applying a protectant fungicides and monitoring the DSS to determine spray intervals. Remember to rotate fungicide FRAC groups and use contact fungicides in your program to minimize the chances of fungicides resistance.

If late blight is suspected act immediately! Under favorable environmental conditions late blight develops very rapidly and can spread many miles in a short period. Please take a sample for isolate identification. It is very important to track disease movement. Contact CCE Cornell Vegetable Program Specialists for assistance.

Cucurbit Downy Mildew Confirmed in WNY

Cucurbit downy mildew has been confirmed in Erie County. There have also been confirmed reports from OH, PA and Ontario Canada. If you're planning on spraying cucumbers to control downy mildew, now is the time to do it!

Characteristic disease symptoms are angular, pale green areas bounded by the leaf veins. They will turn yellow and later necrotic. Under high humidity conditions sporulation will occur on the lower leaf surface. Apply targeted fungicides tank-mixed with protectant fungicides weekly and alternated among available modes of action (FRAC code), starting when there is risk for a specific crop based on forecasting program. Refer to the Cornell Vegetable Guidelines for a complete list of products available.

For more information about the disease, watch our new video Better Know a Pest: Downy Mildew or contact Robert Hadad or Darcy Telenko.

Better Know a Pest Video Series

The CCE Cornell Vegetable Program has created 3 new, short videos about common vegetable pests: flea beetlesswede midge, and downy mildew. The videos are part of a series called Better Know a Pest. Watch for more videos as the season progresses.

2017 Cornell Vegetable Guidelines Available

The 2017 edition of the Cornell Integrated Crop and Pest Management Guidelines for Commercial Vegetable Production is now available. This annual publication provides up-to-date vegetable crop production information for New York State. It is designed as a practical guide for vegetable crop producers, crop consultants, ag chemical dealers, and others who advise vegetable crop producers.

In addition to the annually revised pesticide and crop production information, highlighted changes in this edition of the
Vegetable Guidelines include:
  • Addition of Dickeya blackleg on potato as a disease of concern.
  • Updated regulatory considerations for organic vegetable production.
  • Revised European corn borer management strategies for beans and potatoes.
The Cornell Guidelines are available as a print copy ($41 plus shipping), online-only access ($41), or a package that combines print and online access ($57.50 plus shipping). Cornell Guidelines can be purchased through your local Cornell Cooperative Extension office or from the Cornell Store at Cornell University. To order from the Cornell Store, call (844) 688-7620 or order online.

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