WNC Orchard Insect Pest Populations – May 31, 2022
go.ncsu.edu/readext?867732
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 ▲
Codling moth degree-day accumulations range from about 550 in Henderson County to 755 in Cleveland County, which equates to completion of about 30% and 60% first generation egg hatch. First generation codling moth can continue to be a threat through about 900 DD after biofix, so the next two weeks is an important time for management in Henderson County and at similar or higher elevations. In lower elevation orchards such as Cleveland County, first generation egg hatch will be nearly complete in the next week. In the absence of pheromone trapping, one should assume a threat exists.
Tufted apple bud moth DD accumulations range from 740 in Henderson County to 967 in Cleveland County. Excellent control can be achieved with a single insecticide application made any time between 800 and 1200 DD. Hence, we are essentially in that window of opportunity now. Insecticides recommended for codling moth are also effective against TABM, with Altacor, Exirel, Verdepryn, Delegate and Intrepid most effective.
Learn more about southeastern apple insect pests at the Apple Insect Management page.
2022 Average Weekly Trap Captures
| HENDERSON COUNTY | |||
| Insects per trap | |||
| May 16 | May 23 | May 31 | |
| Codling moth | 2.0 | 1.0 | 0.5 |
| Oriental fruit moth | 3.0 | 4.5 | 3.5 |
| Tufted apple bud moth | 18.0 | 42.0 | 24.0 |
| Redbanded leafroller | 0.0 | 0.0 | 0.0 |
| Obliquebanded leafroller | 0.0 | 6.0 | 4.0 |
| Lesser appleworm | 10.0 | 5.0 | 0.0 |
| Apple maggot (abandoned and research orchards) | – | – | – |
| Brown marmorated stink bug (commercial) | – | – | – |
| Brown marmorated stink bug (unsprayed) | 0.0 | 1.0 | 0.5 |
| Spotted tentiform leafminer | 0.0 | 0.0 | 0.0 |
| Dogwood borer | 38.0 | 80.0 | 82.0 |
| Peachtree borer | 0.0 | 0.0 | 2.0 |
| Lesser peachtree borer | 18.0 | 28.0 | 9.0 |
| San Jose scale | 0.0 | 0.0 | 0.0 |
| Ambrosia beetle (all species) | 2.0 | 6.3 | . |
*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.
2022 Accumulated Degree Days
| HENDERSON COUNTY | ||||
| May 16 | May 23 | May 31 | ||
| Codling moth (Biofix: April 22) | 296 | 429 | 555 | |
| Oriental fruit moth (Biofix: April 12) | 519 | 686 | 852 | |
| Tufted apple bud moth (Biofix: April 27) | 321 | 488 | 655 | |
2022 Pest Trends (click to enlarge)
