Water-soaked lesions on the undersides of leaves were observed with signs of the pathogen — gray to black spores on the underside of the leaf. Very light yellow spots or lesions were observed on the upper sides of leaves. At the moment, downy mildew has not been observed on any other cucurbit in western NC.
North Carolina cucumbers
Downy Mildew reported on Cucumbers
Downy mildew on cucumbers was reported on May 31 in Charleston County, SC and less than a week later CDM was reported in Sampson County, NC
Cucurbit Downy Mildew updates July 28, 2023 | ipmPIPE
Downy Mildew on Cucumber in Western NC
Cucumber downy mildew was confirmed on cucumber plants in a research plot in western NC. Water-soaked lesions on the leaves were observed with gray to black spores on the underside of the leaf. Very light yellow spots or lesions were observed on the upper sides of leaves.
Downy mildew on Cucumber in NC
Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew (CDM) was confirmed in Lenoir County on cucumbers this week.
Cucurbit Downy Mildew updates June 2022 | ipmPIPE
2022 Crop Profile for Cucumber in North Carolina
CucCAP Crop and Disease Management specialists Lina Quesada-Ocampo and Jonathan Schultheis collaborated with other Cooperative Extension specialists in NC to release a new full crop profile for the NC cucumber. The profile details worker activities; production practices, counties, and facts; pests including insects, pathogens, weeds, nematodes, and mites. Each pest is outlined by name (common and scientific), importance, symptoms, chemical controls, products/brands, biological controls, physical controls, and cultural controls.
Cucurbit Downy Mildew Confirmed in Western NC | NC State Extension Plant Pathology
Symptoms typical of CDM include angular, chlorotic or yellow lesions on the upper surface of the leaves with gray to black spores on the underside of the leaf.
