Robert M. Harveson, Extension Plant Pathologist
Xin Qiao, Water and Irrigation Management Specialist
University of Nebraska, Panhandle Research and Extension Center, Scottsbluff
On July 13, 2020 we found symptoms characteristic of Cercospora leaf spot (CLS) on lower leaves of sugarbeets from research plots at the Panhandle Research and Extension Center at Scottsbluff.
CLS, a foliar disease of the beet, has long been a problem for sugarbeet production in more humid areas of the United States. But it has been a sporadic, but potentially severe problem for us in western Nebraska. The disease is caused by the fungal pathogen, Cercospora beticola, and is spread by spores moving in wind currents throughout and among fields.