Skip to main content

NC State Extension

Scouting for Tobacco Thrips and Tomato Spotted Wilt Virus

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 ▲

When to scout for tobacco thrips and tomato spotted wilt virus

Tobacco thrips are not primary pests in tobacco and are of most significant concern as vectors of Tomato Spotted Wilt Virus (TSWV). TSWV infections cause the most damage to plants when they occur within the first six weeks following transplant, although symptoms from infections occurring during this time may not develop for a few weeks after infection.

What part of the plant to scout for thrips and TSWV

Tobacco thrips are visible on leaf surfaces in the first three to four weeks following transplant. TSWV symptoms can be highly variable but often begin as leaf lesions. If the infection becomes systemic, the bud may be infected, and the plant often exhibits “classic” bilateral wilting. TSWV infection can confirmed via the NCSU Plant Disease and Insect Clinic.

TSWV infected plant. Photo: Hannah Burrack

TSWV infected plant. Photo: Hannah Burrack

How to scout for thrips and TSWV

Thrips are very small and may require a hand lens or magnifying glass to observe. When the thrips are young, they are yellow, and wingless. However, direct scouting for thrips may not provide an accurate picture of the population. Thrips population models are more effective at determine when thrips generations (or “flights”) may occur.

A magnified picture of a thrips. Photo: Robert M. McPherson, University of Georgia, Bugwood.org

A magnified picture of a tobacco thrips. Photo: Robert M. McPherson, University of Georgia, Bugwood.org

Thrips and TSWV thresholds

There are no economic thresholds for thrips and TSWV rescue treatments in tobacco, as all management tools are preventive. Preventative management is recommended in locations where TSWV incidence is greater than 10% infection without intervention.

Page Last Updated: 10 years ago
Was the information on this page helpful? Yes check No close