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Crown Rust of Oats

Updated February 10, 2022
Professional headshot of Connie Strunk

Connie Strunk

SDSU Extension Plant Pathology Field Specialist

Written with contributions by Emmanuel Byamukama, former SDSU Extension Plant Pathologist, Shaukat Ali and Melanie Caffe-Treml.

Crown rust of oats is considered the most economically important fungal disease of oats in the northern Great Plains. In years of heavy outbreak, crown rust can cause up to 80% yield loss in susceptible cultivars.