News on Potato Defects and Diseases from Northern America

Idaho growers eye BASF's new GM potato
November 10, 2011
Idaho growers eye BASF's new GM potato
More than a decade has passed since Jim Tiede was among the growers caught up in a debacle over the first U.S. genetically modified potato variety. Even today, the American Falls, Idaho, farmer copes with the fallout of planting Monsanto's GM potato N...
From the archive
Zebra chip research gains importance as disease spreads
November 01, 2011
Zebra chip research gains importance as disease spreads
Zebra chip, a disease that affects potatoes, was recently found in the potato-growing regions of Washington, Oregon and Idaho. The discovery brings to focus the growing need for scientific answers – something that will be discussed at the SCRI Zebra Ch...
From the archive
Zebra Chip Management Webcast Re-launched for Potato Growers in Idaho, Pacific Northwest
November 01, 2011
Zebra Chip Management Webcast Re-launched for Potato Growers in Idaho, Pacific Northwest
In light of the recent confirmation of zebra chip in Idaho, Focus on Potato, a nonprofit potato crop management resource, has made open access its presentation on Zebra Chip Disease of Potatoes by Gary Secor of North Dakota State University. This pres...
From the archive
Common scab of potatoes: Best management practices
October 30, 2011
Common scab of potatoes: Best management practices
'Focus on Potato' of the Plant Management Network has published a new webcast: Common Scab of Potatoes By Thomas A. Zitter Ph.D., Professor, Dept of Plant Pathology, Cornell University, Ithaca, New York
From the archive
October 23, 2011
Additional potato cyst nematode infected field(s) found in Idaho
Two new infestations of a microscopic wormlike pest that attacks potato plants have been discovered in eastern Idaho, state and federal agriculture officials say. Lloyd Knight of the Idaho Department of Agriculture said that both infestations of the p...
From the archive
Liberibacter Species Bacterium Identified as Prime Suspect in Zebra Chip Disease
October 11, 2011
Zebra Chip Finds Its Way to Idaho’s Potato Fields
A potato pest from points south has reached Idaho, University of Idaho Extension specialists with the College of Agricultural and Life Sciences confirmed this week. It was reported last month in Oregon and Washington.
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University of Alaska Fairbanks
October 04, 2011
Scientists look for source of Alaska potato blight
Potato late blight, that same disease that caused the Irish Potato Famine, resurfaced in Alaska this fall. This wasn’t the first time the disease, widespread in the Lower 48 and worldwide, came to Alaska. Plant pathologist Jenifer McBeath suspects it...
From the archive
October 01, 2011
Idaho Potato Cyst Nematode containment area to expand
Potato growers in Eastern Idaho are questioning the effectiveness of the USDA's efforts to contain the pale cyst nematode (Globodera Pallida), a small wormlike pest that endangers Idaho's potato export markets. Several U.S. trading partners, including...
From the archive
Potato Psyllid
September 12, 2011
Zebra chip disease hits potatoes in Oregon and Washington
Zebra chip, a disease that annually costs Southwest U.S. potato growers millions of dollars in crop loss, has been found in Washington and Oregon. A USDA scientist and an Oregon State University plant pathologist confirmed zebra chip in tuber samples ...
From the archive
Late blight hits potatoes in Alaska
September 01, 2011
Late blight hits potatoes in Alaska
Late blight has shown up in the fields of two potato producers, in Palmer and Delta Junction. Alaska. The University of Alaska Fairbanks Cooperative Extension Service is working with major potato producers to help prevent the spread.
From the archive
Potato rot nematode investigation to include Prince Edward Island
August 18, 2011
Potato Rot Nematode Confirmed in Ontario
The Canadian Food Inspection Agency (CFIA) has confirmed a detection of potato rot nematode (Ditylenchus destructor) in garlic from a two-acre farm field in the Ottawa region of Ontario. Potato rot nematode (PRN) is a regulated quarantine pest in Cana...
From the archive
May 10, 2011
New Late Blight Tracking System
A new USDA-funded consortium will provide nationwide tracking of late blight infections of potato and tomato.  A web site currently under development will allow users to report where late blight has been found, and to sign up for automatic notifications by email or text message when late blight is found nearby.
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Howerd Judelson, professor of plant pathology at the University of California, Riverside (Courtesy: UCR Strategic Communications)
April 06, 2011
Major late blight research project funded by the USDA
Given that world potato production is about 320 million tons per year (20 million tons per year in the United States) and world tomato production is about 120 million tons per year (13 million tons per year in the U.S.), late blight is a major problem worldwide even today.
From the archive
New Focus on Potato webcast: Early Blight, a Global Management Issue on potatoes
April 03, 2011
New Focus on Potato webcast: Early Blight, a Global Management Issue on potatoes
"Focus on Potato"of the Plant Management Network has published a new webcast:Early Blight: A Global Management Issue on PotatoesBy Walter R. Stevenson, Ph.D.Professor EmeritusUniversity of WisconsinMadison, Wisconsin
From the archive
March 27, 2011
Gobierno de Canadá apoya la investigación sobre el nematodo del quiste de la papa
No es que los productores de papa del Canadá sufran de la presencia generalizada del nematodo del quiste de la papa (NQP). De hecho, a diferencia de Europa, los brotes en América del Norte son pocos y distantes entre sí. Distribución del nematodo del q...
From the archive
Potato infested by Potato Cyst Nematodes (Courtesy: DuPont; picture updated 2017)
March 27, 2011
Canadian government supports potato cyst nematode research
It's not that Canadian potato growers suffer from widespread presence of the Potato Cyst Nematodes (PCN). In fact, unlike in Europe, outbreaks in North America are few and far between.
From the archive
March 25, 2011
Washington Potato Commission approves potato research for next season
The Washington Potato Commission approved about 742-thousand dollars in research projects for the upcoming growing season at its quarterly meeting this month.
From the archive
March 03, 2011
Dynasty® Seed Treatment Fungicide Now Available for Use on Potatoes
Dynasty, available exclusively as a partner with CruiserMaxx® Potato insecticide/fungicide seed treatment, is a broad-spectrum and highly systemic fungicide that offers improved disease protection against the major classes of fungal pathogens.
From the archive

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