News on Potato Defects and Diseases from Northern America

Of the more than 100 diseases of potato, bacterial ring rot is one of the few zero-tolerance pests. If just one seed potato on a farm is found to have this disease, no seed on that farm can be certified.

It should come as no surprise to Prairie potato growers that Colorado Potato Beetle (CPB) insecticide resistance is increasing.

Levels of zebra chip, a crop disease in potatoes spread by potato psyllids and caused by the Liberibacter bacterium, were down signficiantly in the Pacific Northwest.

Effective immediately, new requirements are in place for exporting potatoes from Prince Edward Island (PEI) to the United States (U.S.).

Officials with Idaho’s pale cyst nematode eradication program say they’ve discovered three more infested fields totaling 994 acres since October, including two fields that had previously been deregulated from the program.

El tizón tardío de la papa puede ser controlado con varias estrategias, incluyendo la resistencia del huesped. Desafortunadamente, los esfuerzos hasta la fecha para utilizarla han llevado a un éxito limitado. Este es el tema principal del artículo escrito por G. A. Forbes; M. Huarte para la Revista Latinoamericana de la Papa, Volumen 18 (2), 2014.

Key Technology introduces hyperspectral imaging on its popular ADR® 5 automatic defect removal system for potato strips to detect and remove sugar ends.

Following the discovery of potato wart on Prince Edward Island (PEI) in August the Canadian Food Inspection Agency (CFIA) notified the USDA’s Animal and Plant Health Inspection Service (APHIS) of temporary mitigation efforts by CFIA.

Growers of the potato variety Lamoka used for chip processing have seen a higher than normal incidence of blackleg in their fields this summer.

Phosphorous acid based products can be an effective control for postharvest diseases when applying best practices. In the presentation. Learn more in the latest ‘Focus on Potato’ presentation “Phosphorous Acid and its use in Potato Post-Harvest Situations,”

In a study published this summer, scientists of the Washington State University found that potato virus S (PVS) breaks down late blight resistance in potato.

While weed resistance issues have been grabbing many headlines over the past few years, fungicide resistance has become an increasingly important issue this growing season—and likely for future growing seasons if sound resistance management practices are not adopted.

The number of cases of a late blight (Phytophthora infestans) continues to grow on Prince Edward Island.

In Alberta, late blight occurs infrequently, but can have devastating impacts in the years when it reaches epidemic levels.

Continued wet August weather has caused late blight infections to proliferate throughout Eastern Idaho, according to University of Idaho Extension potato pathologist Phil Nolte.

The National Potato Council (NPC) is pleased to award Washington Luis da Silva, a plant pathology Ph.D. student at Cornell University in Ithaca, N.Y., its 2014-15 Academic Scholarship.

The Canadian Food Inspection Agency has confirmed a case of potato wart in a Prince Edward Island field.

Late blight, a fungal-like pathogen that affects potato and tomato crops, has been confirmed on Long Island for the sixth consecutive year.