WNC Orchard Insect Populations for April 10, 2018
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Collapse ▲April 10, 2018
The weekly insect pest update is now hosted at the new Southern Appalachian Apples Portal, which includes information on all aspects of apple production in the region. Every Tuesday, an email containing links to updates (including the insect pest update) will be sent to everyone on our email list. To be added to the list, click the “Subscribe” button on this page or send an email to sara_villani@ncsu.edu.
Summaries of local insect activity will begin later in April. For now, trap updates appear below, and here’s an article on early season insecticide options.
Learn more about southeastern apple insect pests at the Apple Insect Management page.
2018 Average Weekly Trap Captures*
| HENDERSON COUNTY | |||
| Insects per trap | |||
|
Mar 26 |
Apr 2 |
Apr 9 |
|
| Codling Moth | 0.0 | 0.0 | 0.0 |
| Oriental Fruit Moth | 0.0 | 40.0 | 60.0 |
| Tufted Apple Bud Moth | 0.0 | 0.0 | 0.0 |
| Redbanded Leafroller | 0.0 | 4.0 | 5.0 |
| Obliquebanded Leafroller | – | 0.0 | 0.0 |
| Lesser Appleworm | – | – | – |
| Apple Maggot | – | – | – |
| Brown Marmorated Stink Bug (commercial – mountains) | 0.0 | 0.0 | 0.0 |
| Brown Marmorated Stink Bug (commercial – upper piedmont) | 0.0 | 0.0 | 0.0 |
| Brown Marmorated Stink Bug (research – unsprayed) | 0.0 | 0.0 | 0.0 |
| Spotted Tentiform Leafminer | <h5>0.0 | 5.0 | 0.0 |
| Dogwood Borer | – | – | – |
| Peachtree Borer | 0.0 | 0.0 | 0.0 |
| Lesser Peachtree Borer | 0.0 | 0.0 | 0.0 |
| San Jose Scale | – | – | 0.0 |
*Note that averages presented here are intended only to illustrate the timing of insect emergence and fluctuations in population activity, and not as general indicators of population levels. Some orchards included in these averages have significantly higher or lower populations than most commercial orchards in the area, resulting in averages that are sometimes skewed from what is typical. The only way to have an accurate assessment of an individual orchard’s populations is to set up traps in that orchard.
2018 Accumulated Degree Days
| Henderson County | ||||
| Biofix |
– |
– |
– |
|
| Codling Moth | – | – | – | – |
| Oriental Fruit Moth | – | – | – | – |
| Tufted Apple Bud Moth | – | – | – | – |
| About degree-day models: The degree day (DD) models predict adult emergence and egg hatch of each generation. They do not predict the intensity of populations, which can be assessed by using pheromone traps. Hence, the models should be used to help gauge the time period when control is most likely needed, and pheromone traps provide information on the need for and frequency of insecticide applications. For full details, read “IPM Practices for Selected Pests” in the Orchard Management Guide. |
CODLING MOTH:
|
ORIENTAL FRUIT MOTH:
|
TUFTED APPLE BUD MOTH:
|