Posted by: HortAlaska | July 26, 2017

Tobacco Rattle Virus

This publication summarizes information gathered in Alaska and other locales for the occurrence of tobacco rattle virus, an insidious disease that shows up in Alaska peony fields from roots imported from a variety of sources. No one knows if TRV affects yields of peonies, but in some years it is definitely visible on the foliage at cut stem harvest time. The most common vector is a nematode that does not occur naturally in Alaska soils, and there are hints that it might be spread by sap or clippers. However in the 20 years I have been working with peonies, I have a few plants mixed in with ones that show no symptoms. In those years, it has not spread to adjacent plants that have been pruned and clipped every year. At least the strain that occurs in Alaska does not seem to spread.

17.Garfinkel et.al. TRV

 

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