Pest News: Cucurbit Downy Mildew Found in Sampson, Hertford and Martin Counties

— Written By and last updated by Mary Lorscheider
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Cucurbit downy mildew was found in cucumber in Sampson, Hertford and Martin counties and in butternut squash in Sampson county in the past five days. Growers should scout their fields twice per week and protect their crops. The continuos wet weather we have been experiencing will favor the disease. The forecast for cucurbit downy mildew risk in NC continues to be high.

If you think you have cucurbit downy mildew in your cucurbits please contact your local Extension Agent and send photos and/or physical samples to the Plant Disease and Insect Clinic. If cucurbit downy mildew is confirmed in your samples by an expert, please make sure a report is sent to the Cucurbit downy mildew IPM pipe website.

For control recomendations and who to contact for assistance please refer to the first NC report from Wayne County, or check our factsheets in english and spanish.

Cucurbit downy mildew dark sporulation on back side of cucumber leaf, note angular lesions bound my leaf veins (Photo Lina Quesada, NCSU vegetable pathology)

Cucurbit downy mildew dark sporulation on back side of cucumber leaf, note angular lesions bound by leaf veins (Photo Dr. Lina Quesada, NCSU Vegetable Pathology Lab)

Written By

Lina Quesada-Ocampo, N.C. Cooperative ExtensionDr. Lina Quesada-OcampoExtension Plant Pathology Specialist (Cucurbits and Sweetpotato) & Professor Call Dr. Lina Email Dr. Lina Entomology & Plant Pathology
NC State Extension, NC State University
Updated on Jun 12, 2023
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