New ODA Rules regarding blackleg in Brassicaceae plants

The updated rules are: 

  • Leptosphaeria biglobosa has been added as a cause of blackleg.  Based on symptoms, this pathogen is indistinguishable from L. maculans and may be able to hybridize with it. It has also been detected causing blackleg symptoms in Oregon crucifer fields (C.M. Ocamb, unpublished data).
  • A mandatory biennial review of the blackleg management requirements has been added.  This means that in two years, the Department must review the rule to see if the requirements are working, need to be adjusted, or need to be revoked.  

The filing certificate explains the amendments in more detail