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| Nematology |
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Potato Cyst Nematodes –
Pests of National Importance
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Globodera rostochiensis (golden nematode) &
Globodera pallida (pale cyst nematode) |
What are Potato Cyst Nematodes (PCNs)?
• Both PCNs are internationally-
recognized quarantine pests of potato.
• The PCN known as golden nematode
was discovered in NY in 1941. It has
been successfully confined to nine
counties in New York. |
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• The PCN known as pale cyst nematode was discovered in Idaho in 2006.
• Both nematodes reside in Canada with recent discoveries of the golden nematode
in Quebec and in seed production fields in Alberta.
• Both species of PCNs are distributed in potato-growing areas worldwide. |
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Why are PCNs a Threat to US Agriculture?
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• Once PCNs are introduced, eradication is difficult and perhaps unlikely.
PCN cysts can survive for more than 30 years in soil depths up to 40
inches
• If PCNs become established in U.S. potato, tomato, and eggplant
production areas, annual crop losses could reach $4.8 billion.
• If PCNs spread to new sites in the U.S, trade embargoes could result,
compromising domestic and international trade. Quarantines would
affectthe potato industry as well as any agricultural commodity shipped |
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| from the regulated areas and carrying soil (e.g. all nursery, turf, root, and tuber crops) in the regulated areas. |
What PCN management strategies are currently used in New York?
• PCN control requires strict adherence to regulatory and quarantine procedures and
annual surveys of infested and potentially exposed lands.
• Commercially marketable PCN-resistant potatoes are grown in affected fields.
• In NY, the USDA-APHIS and the New York State Department of Agriculture and Markets
work cooperatively with research and extension leaders and with growers to
implement appropriate nematode management plans. |
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How does Research Help to Manage and Control PCNs?
• The joint ARS-Cornell PCN-research program is the only program in North America that has extensive expertise in PCN
biology, resistance breeding, and PCN management strategies, and it plays a vital role for PCN control in the U.S.
• Our research program focuses on four major areas:
-Develops and releases PCN-resistant potato varieties.
-Uses molecular tools to develop diagnostics for faster identifications.
-Uses multiple technologies to discover novel approaches to PCN management.
-Provides scientific & technical support to USDA-APHIS and NYS nematode quarantine programs. |
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Contacts For More Information for The ARS-Cornell PCN Program |
PCN Biology and control - Xiaohong Wang, ARS nematologist, 607-255-7845, Xiaohong.Wang@ars.usda.gov
PCN resistant potato varieties - Walter De Jong (plant breeder), 607-254-5384, wsd2@cornell.edu
PCN resistant seed production - Keith Perry (plant pathologist), 607-254-8243, klp3@cornell.edu
PCN resistant potato cultural practices-Don Halseth (horticulturalist), 607-255-5460, deh3@cornell.edu
USDA-APHIS PCN Program - Dan Kepich , 607-566-2212, Daniel.j.kepich@aphis.usda.gov
New York State Department of Agriculture and Markets PCN Program - Bill Nastyn, 518-457-2087, William.Nastyn@agmkt.state.ny.us | |
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Last Modified: 04/01/2008
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