Sweetpotato Black Rot Found in Storage Facilities
go.ncsu.edu/readext?764534
en Español / em Português
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 ▲From Madison Stahr and Dr. Lina Quesada-Ocampo
Sweetpotato black rot, caused by the fungal pathogen Ceratocystis fimbriata, was found in two commercial sweetpotato storage facilities in January of 2021. Afflicted sweetpotatoes exhibited symptoms of firm, circular lesions ranging from grey to greenish black in color consistent with the disease.
Growers and packers should remain vigilant as sweetpotato black rot can develop and spread under storage conditions. To limit disease outbreaks during storage, prevention is the best method of control. Reusable storage bins should be clear of debris prior to use and properly sanitized. During storage, a storing temperature of 55˚F should be maintained.
Growers and packers can also consider using effective fungicides postharvest and in the field during the next growing season. The fungicides Mertect (thiabendazole) and Stadium (azoxystrobin, fludioxonil, difenoconazole) are effective against black rot and have a postharvest label to use in sweetpotato. The fungicide Mertect can also be applied to seed to protect 2021 plantings from black rot. While both fungicides can be used for domestic markets, they may have restrictions related to maximum residue levels allowed in particular export markets.
If you think you may have sweetpotato black rot at your storage facility and need assistance with diagnostics or management, please contact your local Extension agent and send physical samples and/or photos to the Plant Disease and Insect Clinic. For additional management options, please refer to those listed in our disease factsheet.