Scout Potatoes for Late Blight Due to Recent Reports

— Written By and last updated by Mary Lorscheider
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 ▲

Late blight, caused by the oomycete Phytophthora infestans, was reported this week from a tomato sample from Maryland. Further analysis of the sample by USAblight has determined that it belongs to P. infestans US-23, a strain that can infect potato and tomato.

Potato and tomato are susceptible to this disease, and can be significantly defoliated within days if environmental conditions favor the pathogen. Active scouting of potato fields for late blight is recommended. While there are no nearby sources of inoculum, the pathogen is airborne and timely detection of any infected plants is key for successful disease control. Preventive fungicide applications to protect potato crops in NC from late blight should be initiated if infected plants are detected, and if the weather will be wet and cool, which is conducive to disease.

For more information about potato late blight and how to control it see our potato late blight fact sheet, which lists effective products against late blight. Control recommendations are also available in the USAblight website, where you can register to receive text and/or email alerts when new disease outbreaks are reported.

If you think you have late blight in your potatoes please contact your local Extension Agent and send photos and/or physical samples to the Plant Disease and Insect Clinic. If late blight is confirmed in your samples by an expert, please send a report at the USAblight website to alert other growers. The USAblight website also contains information about disease identification and control.

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
Was the information on this page helpful? Yes check No close
Scannable QR Code to Access Electronic Version