Filtering by tag: CDM ✕

Cucumber downy mildew

Cucurbit Downy Mildew Found 7/30/2025 in Haywood County

Cucumber downy mildew (CDM) has been confirmed on cucumber plant samples from a research plot at the Mountain Research Station in Haywood County, NC on July 30, 2025.Water-soaked lesions on the…

Cucumber leaves showing yellow chlorotic spots and pronounced veining

Downy Mildew Confirmed on Cucumbers in Eastern North Carolina

Downy mildew, caused by the oomycete Pseudoperonospora cubensis, has been identified on cucumber crops in Eastern North Carolina as of June 10, 2025. Disease symptoms were observed in commercial…

Featured image: Cucumber leaf with downy mildew lesions and sporulation under a hand-held microscope for diagnosis (Photo credit: Lina Quesada)

Cucumber Downy Mildew Found in Sampson County in North Carolina

Pseudoperonospora cubensis is responsible for cucurbit downy mildew (CDM), which was detected in Sampson County on cucumbers on June 4, 2024, with a disease incidence of around 5%.On the upper side…

squash leave with disease symptoms

Squash Downy Mildew found in Clayton N.C.

Written by Md Ziaur Rahman Bhuiyan and Lina M. Quesada-Ocampo.Cucurbit downy mildew (CDM) is caused by an obligate oomycete, Pseudoperonospora cubensis. This disease was confirmed on squash in…

underside of cucumber leaf

Cucumber Downy Mildew Found in Lenoir County in North Carolina

Written by Mariana Prieto-Torres and Lina M. Quesada-Ocampo.Pseudoperonospora cubensis is the causal agent of cucurbit downy mildew (CDM). This disease was confirmed on June 20, 2023 in Lenoir County…

Angular, yellow lesions on topside of the leaves that are bound by leaf veins

Cucumber Downy Mildew Found in North Carolina

Written by Mariana Prieto-Torres and Lina M. Quesada-Ocampo.Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew (CDM), was confirmed on cucumbers in Wilson and Sampson Counties on…

Cucumber downy mildew

Cucumber Downy Mildew Found in Johnston County

Written by Lina Quesada-Ocampo and Brandon ParkerCucumber downy mildew, caused by the oomycete pathogen Pseudoperonospora cubensis, has been found in a commercial cucumber field in Johnston County.…

Cucumber downy mildew

Cucumber Downy Mildew Detected in North Carolina

Written by Lina Quesada-Ocampo and Kimberly D’ArcangeloCucumber Downy Mildew (CDM) was confirmed on a cucumber sample from a production field in Wilson County. Leaves displayed approximately 10%…

Cucumber plant leaves with yellow spots, some leaf edges damaged and small holes

Cucumber Downy Mildew Reported in North Carolina

Written by Lina Quesada-Ocampo and Kimberly D’ArcangeloCucurbit downy mildew (CDM) was confirmed on a cucumber sample from a production field in Sampson County on May 30 of 2018. Leaves presented…

Potted green plant in a small pot with a visible "USDA Organic" tag

Basil Downy Mildew Reported in North Carolina

Basil downy mildew has been reported in North Carolina. Growers are advised to actively scout for the disease and implement management strategies to prevent pathogen spread. For more information…