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North American Certified Seed Potato Health Certificate (NACSPHC)

Carol MacNeil, Extension Vegetable Specialist
Cornell Vegetable Program

Last Modified: August 31, 2016

North American Certified Seed Potato Health Certificate (NACSPHC)
The emergence of Potato Virus Yntn, which causes tuber necrotic ringspot disease (TNRD) in susceptible varieties, and the emergence of blackleg Dickeya, both serious seed-borne diseases, are very important reasons why you need to get a copy of the North American Certified Seed Potato Health Certificate (NACSPHC) for each lot of potato seed you buy.  

About 20% of the PVY in the North American seed crop is currently PVYntn. 25% incidence of TNRD occurred in a local grower's crop from one field, resulting in very high losses. It is reported as "Mosaic" on the certificate, which includes all the PVY strains. Only buy seed lots with a very low percent of mosaic. Aphids can spread the disease from a non-necrotic ringspot susceptible "carrier" to a susceptible variety on your farm.
From Meg McGrath, 8/25, Long Island Fruit & Vegetable Update - Brown leaf spots and necrotic leaf veins in the early, European variety Nadine this season were confirmed to be caused by PVYNTN. See photos of these leaves and of a plant with more typical mild symptoms, plus information about PVY. Also see images of the brown necrotic ringspots on tubers of a susceptible variety. In other varieties PVYntn only reduces yield, causing plants to produce fewer and smaller tubers. Read about varietal susceptibility to TNRD.

Common bacterial blackleg and the new, much more virulent bacterial blackleg Dickeya (BBD) aren't distinguished on the NACSPH Certificate, but are reported as "Blackleg" at this time. About 30% of potato stems in one local field wilted and died from BBD in 2015. Four fields were confirmed positive in the CVP region in 2016, and more fields were suspected. Plant pathologists are recommending that growers adopt 0% tolerance for blackleg in their seed. If any BBD was seen in a field this year check carefully for rotting tubers and the "shells" of tubers that already rotted, before harvest. Also note if yield was less than expected. 2016 incidence of BBD in Eastern and some Midwestern fields were traced to 11 ME seed producers and 2 New Brunswick, Canada, producers, of Reba, Superior, Vivaldi, Norwis, Snowden, Yukon Gold, Beacon Chipper, Kennebec and Atlantic.  


North American Certified Seed Potato Health Certificate (SAMPLE) (pdf; 469KB)

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Upcoming Events

2018 Processing Snap Bean Advisory Meeting

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December 4, 2018
10:00 AM - 1:30 PM
Canandaigua, NY

Discuss the 2018 snap bean growing season and management concerns. Reports and discussion of the 2018 Snap Bean Research Projects funded by the Association. Review priorities and the role of the advisory group in applications for state and federal grants. Give your input on the format of future advisory meetings and future educational programs.
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2018 Processing Vegetable Crops Advisory Meeting

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December 12, 2018
9:30 AM - 2:30 PM
Batavia, NY

Sweet corn, pea, beet, and carrot processing growers and industry members are invited to attend. Discuss the 2018 growing season and management concerns. Reports and discussion of the 2018 Projects funded by the New York Vegetable Research Council/Association. Review priorities and the role of the advisory group in applications for state and federal grants. Give your input on the format of future advisory meetings and future educational programs. 
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2019 Empire State Producers EXPO

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January 15 - January 17, 2019
1.25 hr sessions throughout each day
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The 2019 Empire State Producers Expo combines the major fruit, flower and vegetable associations of New York State in order to provide a comprehensive trade show and educational conference for New York producers, as well as the surrounding states and Eastern Canada. 
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Announcements

Vegetable Sizing Templates Available

To assist farmers looking to sell into wholesale markets, vegetable sizing templates are now available for bell peppers, broccoli, Brussels sprouts, cauliflower, cucumbers, eggplant, potatoes, tomatoes, zucchini and summer squash. The crop templates are scaled to size (8.5 x 11 paper). They can be printed and used to create sizing templates to be used by workers on the wash and pack lines. Additional grading resources are available too.

Empire State Producers EXPO Proceedings

Proceedings from the Empire State Producers EXPO conference from 2011-2018 are available online.

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