WNC Orchard Insect Pest Populations – June 23, 2020
go.ncsu.edu/readext?703948
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 ▲
We are currently in a lull of direct pest activity throughout the western apple region. Codling moth degree-day (DD) accumulations have reached about 800 and 1250 in Henderson and Cleveland/Lincoln Counties, respectively. First-generation adult emergence is essentially complete in orchards at elevations of ~2100 ft, and in lower elevations (<800 ft) second-generation adult emergence is predicted to begin in about a week.
Tufted apple bud moth cumulative DDs are about 1,000, so there is still time to make an insecticide application for this pest if one has not been made in the past couple of weeks.
Second generation oriental fruit moth flight is also nearing completion, with low trap captures in orchards we’ve been monitoring.
Curative applications of insecticides/miticides for control of aphids, leafhoppers, or European red mites is the main concern at this time. However, overall populations remain low in most orchards, so be sure to scout orchards for these pests to determine the need for an insecticide.
Learn more about southeastern apple insect pests at the Apple Insect Management page.
2020 Average Weekly Trap Captures
| HENDERSON COUNTY | |||
| Insects per trap | |||
| Jun 8 | Jun 15 | Jun 22 | |
| Codling moth | 0.4 | 0.3 | 0.0 |
| Oriental fruit moth | 1.1 | 2.6 | 1.6 |
| Tufted apple bud moth | 27.0 | 23.0 | 2.0 |
| Redbanded leafroller | 0.0 | 0.0 | 0.0 |
| Obliquebanded leafroller | 20.0 | 14.0 | 2.0 |
| Lesser appleworm | 8.0 | 0.0 | 0.0 |
| Apple maggot (abandoned and research orchards) | 0.0 | 0.0 | 0.0 |
| Brown marmorated stink bug (commercial) | 1.5 | 1.1 | 0.8 |
| Brown marmorated stink bug (unsprayed) | 5.0 | 4.3 | 1.5 |
| Spotted tentiform leafminer | 10.0 | 0.0 | 24.0 |
| Dogwood borer | 58.0 | 36.0 | 9.0 |
| Peachtree borer | 0.0 | 3.0 | 5.0 |
| Lesser peachtree borer | 68.0 | 54.0 | 41.0 |
| San Jose scale | 0.0 | 0.0 | 0.0 |
*Note that these averages illustrate only the timing of insect emergence and fluctuations in populations, and are not representative of population levels in any given orchard. The only way to have an accurate assessment of an individual orchard’s populations is to set up traps in that orchard.
2020 Accumulated Degree Days
| HENDERSON COUNTY | ||||
| Jun 8 | Jun 15 | Jun 22 | ||
| Codling moth (Biofix 4/20) | 541 DD | 678 DD | 778 DD | |
| Oriental fruit moth (Biofix 3/30) | 938 DD | 1111 DD | 1246 DD | |
| Tufted apple bud moth (Biofix 4/27) | 680 DD | 853 DD | 988 DD | |
2020 Pest Trends
Visit WNC Orchard Insect Populations for archived posts.