Downy mildew, a devastating disease on cucumbers caused by the oomycete Pseudoperonospora cubensis, has been reported in North Carolina. It was observed on cucumber in Duplin (June 1, 2016) and Sampson (June 27, 2016) counties. The field had 1-5% disease incidence, with the infected plant/leaf having 35-40% disease severity.
Source: Cucumber downy mildew reported in North Carolina | North Carolina Cooperative Extension
