Zebra Chip (ZC)

Advanced foliar symptoms of ZC. Photo from Joe Munyaneza.

After being restricted mostly to Texas and neighboring states, the pathogen causing zebra chip (ZC) of potato was established in the Northwest in 2011. A bacterium known as Candidatus Liberibacter solanacearum, the ZC pathogen is transmitted to potato exclusively by the potato psyllid (Bactericera cockerelli), and cannot be cultured outside of its insect and plant hosts. Symptoms of ZC in the foliage are similar to other diseases such as purple top caused by phytoplasmas, and PLRV. Infected plants usually decline quickly. Tuber symptoms are various stripes and dark markings that become more distinct upon cooking.  To date, the main management method for ZC is scouting for, and management of, potato psyllid.

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Insects, Diseases, Nematodes, & Beneficial Organisms

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About The Northwest Potato Research Consortium

In February 2012 the state potato commissions in Washington, Idaho, and Oregon officially launched a new cooperative effort in research. The aim of this initiative is to increase cooperation and efficiency of the research programs funded by the three potato commissions that total about $1.5 million annually. It will also work toward comprehensive research results reporting process that aims to get useful information to the growers and industry members who need it. This website is a big part of that effort. Research results, integrated pest management guidance, and production information of many kinds will be presented here. For feedback or suggestions on this site, please contact Raina Spence, Manager of the Consortium.

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