Update on Golden Nematode Detection in New Brunswick, Canada

The Canadian Food Inspection Agency (CFIA) has confirmed golden nematode, Globodera rostochiensis, in a seed potato production field in northwestern New Brunswick. This is the first confirmed detection of golden nematode in New Brunswick, Canada.

CFIA immediately suspended movement of regulated host material from the affected farm and initiated a 10-year trace-back and trace-forward investigation. CFIA has confirmed that no potatoes grown on the affected field in 2026 were shipped to the United States.

APHIS is working with CFIA and State plant health officials to review shipment records, assess risk, and determine whether soil sampling or other follow-up measures are needed. A shipment record does not mean that golden nematode is present at a listed location. 

Golden nematode is a quarantine-significant plant pest that can reduce potato yields and poses a risk to plant health and agricultural production. It spreads through the movement of infested soil on seed potatoes, equipment, machinery, vehicles, or other items.

APHIS will contact businesses or growers directly if additional information or action is needed. Anyone contacted as part of the trace-forward investigation should maintain relevant purchase, sale, planting, shipping, and seed certification records and follow guidance from APHIS or State plant health officials.

For additional information, please visit the Golden Nematode page on the APHIS website.