B-Rated, Fungi, Plant Pathogens, Ratings

Cronartium ribicola J. C. Fisch. 1872 white pine blister rust

1 Comment


California Pest Rating for

Cronartium ribicola J. C. Fisch. 1872 white pine blister rust
Pest Rating: B

download pest rating

*NOTE

You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov.

Posted by tn

One thought on “Cronartium ribicola J. C. Fisch. 1872 white pine blister rust”

  1. Comment from
    Charles W. Barnes PhD
    Plant Pathologist
    US Forest Service
    Forest Health Protection
    Southern California Shared Service Area

    Until recently, Cronartium ribicola was found as far south as the Southern Sierra Nevada mountains in California. In late 2021 and early 2022, infected Ribes aureum was found in two locations, one near the city of San Bernardino, and the other near Los Angeles respectively. It was confirmed as C. ribicola with qPCR. To date, it has not been found on any white pine species in southern California.

    Reply: Thank you for this information Dr. Barnes. It is unfortunate that C. ribicola has been found even further south on Ribes spp. in Southern California. We had an official record from San Bernardino County but not from Los Angeles County.

Comments are closed.