Oat mosaic virus

oat mosaic disease

Oat mosaic potyvirus, Oat soil-borne mosaic virus

Europe: UK; North America: USA

Older reports note SE USA MD to FL and AL, and also NW.

2025-09-05

virus

China

Main: oat

OMV000

Oat Mosaic is soil-borne and spread by the vector Polymyxa graminis, which carries the virus into oat roots during infection. The vector’s long-lived resting spores can survive in soil for many years, making the virus persistent in infested fields. OMV is not transmitted by seed. Cool, moist soil conditions favor transmission.