In September 2018, a New Zealand potato processing facility identified a symptom of Potato Mop Top Virus (PMTV) in a tuber on a processing line.

A biosecurity incursion was announced and along with the Ministry for Primary Industries, a response was launched.

It became evident early in the response that the disease couldn’t be eradicated and the best outcome for potato growers is industry led, long-term management.

Biosecurity New Zealand continues to support our industry in helping us with long-term management, which includes non-regulatory controls and voluntary agreement.

Potatoes New Zealand has conducted a survey of growing areas and developed an identification guide for growers.

This page has the most recent updates and resources.

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Useful Links:

• Cornell University College of Agriculture & Life Sciences: “Management of Potato Tuber Potato Necrotic Viruses”
• North Dakota State University: “Potato Viruses: Mop-top Management”
• North Dakota State University: “Potato Extension”