Ellie Andrews, UCCE Specialty Crops Advisor for Sonoma, Marin, and Napa Counties Karina Elfar and Akif Eskalen, Plant Pathology Department, UC Davis Apple branch canker. 2024. UCANR Publication #404312. Akif Eskalen, Karina Elfar, Oleg Daugovish, Mark Bolda, Frank Martin 2024.