Tobacco Insect Scouting Report, July 3 2015
go.ncsu.edu/readext?364265
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 ▲
Plants to be topped don’t necessitate treatment for budworms. Photo: Jeremy Slone
This week we saw an increase in budworm pressure across nearly all sites. Given that some sites will be topping their plants in the coming two weeks, it is not warranted to make treatments solely for budworms at those locations. Even though some sites were at threshold, we will continue scouting and make treatments if necessary in the future, post-topping. Furthermore, although we aren’t reporting it on this post, we are seeing parasitized budworms as well. This is a good sign and suggests that parasitoids are successfully finding budworm prey at most of our sites.
Clockwise from top left; Red tailed wasp, hornworm and egg, stinkbugs and egg mass, frog. Photo Jeremy Slone
Above is a photo of several insects we have mentioned in previous posts without accompanying images. This image shows the red tailed wasp which is a parasitoid of caterpillar pests, a newly emerged hornworm and egg, as well as newly emerged stinkbugs and their eggs. Opposed to stinkbug egg clusters, caterpillar eggs are laid singly and on the part of the plant most suited to newly emerged larvae. Although the frog is not a pest, we have seen a few on the plants where we’ve stopped at multiple sites this summer. It’s possible they may help control pests as well.
Increasing plant density. Photo: Jeremy Slone
Lastly, an additional component of this project is to determine the speed and accuracy of alternate scouting methods. Current recommendations suggest that you cross a random number of rows and then continue down that row a random number of plants before stopping to inspect for pests. This is a problem later in the season when the plants are so large that it becomes difficult to move across rows. In the photo above, you can see how it may not be ideal to have to force your way around plants at the risk of damaging leafs or stalks. At the end of this season we hope to have an idea of the efficacy of at least one other method.
Eastern 1
Scouting Report, Eastern 1 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.0 flea beetles/plant– No treatment | 2% budworm infested plants – No treatment | 0 – No treatment | 0 – No treatment |
Scouting Report, Eastern 1 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.24 flea beetles/plant– No treatment | 16% infestation – Req treatment | 0% – No treatment | 0 – No treatment |
Eastern 2
Scouting Report, Eastern 2 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.0 flea beetles/plant– No treatment | 13% budworm infested plants – No treatment | 0 – No treatment | 0 – No treatment |
Scouting Report, Eastern 2 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.01 flea beetles/plant– No treatment | 14% budworm infested plants – No treatment | 0 – No treatment | 0 – No treatment |
[Eastern 2 will not receive treatment for budworms as plants are being topped at this time]
Eastern 3
Scouting Report, Eastern 3 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.08 flea beetles/plant– No treatment | 20% budworm infested plants – No treatment | 0% – No treatment | 0 – No treatment |
Scouting Report, Eastern 3 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.02 flea beetles/plant– No treatment | 28% budworm infested plants – No treatment | 0% – No treatment | 0 – No treatment |
[Eastern 3 will not receive treatment for budworms as plants are being topped at this time]
_________________________________________________________________
Piedmont 1
Scouting Report, Piedmont 1 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.28 flea beetles/plant– No treatment | 8% budworm infested plants – No treatment | 0 – No treatment | 0 – No treatment |
Scouting Report, Piedmont 1 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | .93 flea beetles/plant– No treatment | 10% infested – No treatment, too soon from last treatment | 0 – No treatment | 0 – No treatment |
Piedmont 2
Scouting Report, Piedmont 2 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.3 flea beetles/plant– No treatment | 2% budworm infested plants – at threshold | 2% – No treatment | 0 – No treatment |
Scouting Report, Piedmont 2 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.98 flea beetles/plant– No treatment | 6% budworm infested plants – No treatment | 0% – No treatment | 0 – No treatment |
Piedmont 3
Scouting Report, Piedmont 3– Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.32 flea beetles/plant– No treatment | 4% budworm infested plants – No treatment | 0% – No treatment | 0 – No treatment |
Scouting Report, Piedmont 3 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles per plant | Percent tobacco budworm infested plants | Hornworms per plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0.37 flea beetles/plant– No treatment | 7% budworm infested plants – No treatment | 11% – Req treatment | 0 – No treatment |
More information
Tobacco insect scouting methods – Tobacco Growers Information Portal
Previous scouting reports – Tobacco Growers Information Portal