Skip to main content

Logo for N.C. Cooperative Extension N.C. Cooperative Extension Homepage

Monitoring 2018 Black Light Data

en 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.

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 ▲

Monitoring black lights results affords the opportunity to evaluate key insect pest intensity and duration. With time, data can be compared among years and other light traps across the state. Using this data along with scouting can prevent economic loss from insect pest.

Several key factors worthy of mention when reviewing the NCSU web site are stated below.

  • Make sure to examine/select the desired pest from the menu on the left. By default, the “Corn Earworm” (CEW) is selected.
  • By default, the current year is shown. For previous years, simply choose from the dropdown dialog box.
  • The corn earworm and tobacco budworm are different caterpillar pests. However, some locations separate these two pests while others do not.
  • Each location can be used to exemplify trends for that area but comparison of specific populations or pest between locations should be made with caution. As example, one location may be ideally located to capture CEW and may peak with several hundred CEW per night. Another location may be less suited to capture CEW and may peak at fifty per night. Both may represent the same CEW population feeding on the crop. Thus, comparing the intensity of the CEW population between the traps may or may not be accurate. Conversely, comparison of the date each location peaks should be more accurate.
  • Some pest results are strongly correlated to the actual field population while others do no. As example, the CEW strongly correlates to field moth activity. Stinkbug catches may or may not. Hornworm catches correlate weakly in some locations and more strongly in others. The point is to use the data for the light trap nearest you and then scout fields to confirm black light results.

Review black light data within NC.