Cucumber Downy Mildew Confirmed in Wilson County

— Written By and last updated by
en Español / em Português
Español

El inglés es el idioma de control de esta página. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.

Al hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. NC State Extension no garantiza la exactitud del texto traducido. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.


Português

Inglês é o idioma de controle desta página. Na medida que haja algum conflito entre o texto original em Inglês e a tradução, o Inglês prevalece.

Ao clicar no link de tradução, um serviço gratuito de tradução será ativado para converter a página para o Português. Como em qualquer tradução pela internet, a conversão não é sensivel ao contexto e pode não ocorrer a tradução para o significado orginal. O serviço de Extensão da Carolina do Norte (NC State Extension) não garante a exatidão do texto traduzido. Por favor, observe que algumas funções ou serviços podem não funcionar como esperado após a tradução.


English

English is the controlling language of this page. To the extent there is any conflict between the English text and the translation, English controls.

Clicking on the translation link activates a free translation service to convert the page to Spanish. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. NC State Extension does not guarantee the accuracy of the translated text. Please note that some applications and/or services may not function as expected when translated.

Collapse ▲

Cucurbit downy mildew was reported this week in commercial cucumber fields in Wilson County. Symptoms were typical of downy mildew, including angular chlorotic lesions on the leaves and a grayish-brown “downy” appearance on the abaxial sImage of Cucurbit downy mildewurface. Leaves presented approximately 10% disease severity, but only 5% of the field was affected (Figure 1).

Figure 1: Early downy mildew symptoms on a cucumber leaf (Photo Dr. Lina Quesada-Ocampo, NC State University Vegetable Pathology Lab)

Growers are recommended to take immediate action to protect cucurbit crops in North Carolina, especially since we are experiencing favorable weather conditions for disease. Cucumbers and melons are generally more susceptible to the disease than squash and pumpkin. The pathogen quickly becomes resistant to fungicides especially in cucumber, thus, tank mixing fungicides specific for downy mildew with a protectant fungicide and alternative modes of action is strongly recommended. Effective fungicides and information can be found in our Cucurbit Downy Mildew fact sheet.

We also encourage commercial growers and homeowners to be diligent in checking cucurbit leaves for downy mildew and reporting the disease to the Cucurbit downy mildew IPM pipe website (CDM ipmPIPE). These reports are anonymous and crucial in warning growers throughout the east coast of an outbreak. You can also register to receive texts, emails and/or phone alerts when new disease outbreaks are reported.

If you think you have cucurbit downy mildew, please contact your local Extension Agent and send photos and/or physical samples to the Plant Disease and Insect Clinic.

Be sure to follow NC State Extension Vegetable Pathology reports on Twitter and Facebook for more veggie disease alerts.