Fusarium Head Blight Risk Update, April 15, 2019

— Written By Lindsey Thiessen
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 ▲

Fusarium Head Blight

Fusarium Head Blight (FHB), also known as scab, is caused by several Fusarium spp., particularly F. graminearum in the U.S. The fungus overwinters in soil or in crop stubble from previous crops (ie corn, wheat, other grasses). Spores from overwintering fungal structures are released during periods of wet weather, and risk for FHB infection occurs during wheat flowering or barley heading. FHB is a concern for grain growers because of the production of mycotoxins, like deoxynivalenol (DON).

Disease is managed through the use of moderately resistant varieties and fungicides timed to periods of high risk. The Fusarium Risk Assessment Tool provides a prediction of risk for wheat producing regions in the U.S. Fungicide efficacy for FHB and other common diseases can be found from North Central Regional Committee on Management of Small Grain Diseases (NCERA-184) For FHB, the most effective fungicides are Prosaro, Caramba, Proline, and Miravis Ace. Fungicides containing strobilurins may increase DON, and those fungicides should not be used after flag leaf in case of an FHB epidemic.

More information on FHB and symptoms can be found at the Small Grains Extension portal.

Current Risk

Current risk estimates are based on plants that are currently flowering. Regions of medium to high risk for FHB infections in southeast NC (Pender, Onslow, and adjacent counties) are predicted for this week, as of April 15, 2019. Late-planted wheat fields are likely not near flowering yet, but those fields planted on time may be flowering. Fungicides are less effective when applied prior to flowering, and should be applied at early flowering.

To monitor FHB risk in your area, utilize the Fusarium Risk Assessment Tool.