At the 2025 Sugarbeet Growers Seminar in Grand Forks, University of Minnesota Plant Pathologist Ashok Chanda delivered a presentation about Cercospora leaf spot. Chanda said there is a new generation of beet varieties that have extreme tolerance to CLS.”In my own research trials, I’m seeing Cercospora leaf spot develop earlier and earlier and these are all inoculated artificially, which means it’s going to happen to the grower’s field as well. So you have to start spraying just before the row closure and then keep up with those intervals and rotate fungicides with different modes of action.”
