WNC Orchard Insect Pest Populations – October 13, 2020
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October 13, 2020
The last full pest report was September 8, but traps will continue to be checked and the numbers updated until insect populations approach zero. Most pests are continuing to decline in number.
The full September 8 pest report can be seen on our website. All previous 2020 pest reports can be found by scrolling down this page.
Learn more about southeastern apple insect pests at the Apple Insect Management page.
2020 Average Weekly Trap Captures
| HENDERSON COUNTY | |||
| Insects per trap | |||
| Sep 28 | Oct 5 | Oct 12 | |
| Codling moth | 0.0 | 0.2 | 0.0 |
| Oriental fruit moth | 2.1 | 1.6 | 0.5 |
| Tufted apple bud moth | 0.0 | 0.0 | 0.0 |
| Redbanded leafroller | 0.0 | 0.0 | 0.0 |
| Obliquebanded leafroller | 0.0 | 0.0 | 2.0 |
| Lesser appleworm | 0.0 | 0.0 | 0.0 |
| Apple maggot (abandoned and research orchards) | 0.0 | 0.0 | 0.0 |
| Brown marmorated stink bug (commercial) | 3.5 | 3.8 | 3.1 |
| Brown marmorated stink bug (unsprayed) | 6.5 | 5.8 | 4.5 |
| Spotted tentiform leafminer | 0.0 | 0.0 | 0.0 |
| Dogwood borer | 0.0 | 1.0 | 0.0 |
| Peachtree borer | 1.0 | 3.0 | 2.0 |
| Lesser peachtree borer | 0.0 | 0.0 | 1.0 |
| San Jose scale | 10.0 | 0.0 | 2.5 |
*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 | ||||
| Sep 28 | Oct 5 | Oct 12 | ||
| Codling moth (Biofix 4/20) | 2880 DD | 2940 DD | 3023 DD | |
| Oriental fruit moth (Biofix 3/30) | 3831 DD | 3917 DD | 4033 DD | |
| Tufted apple bud moth (Biofix 4/27) | 3573 DD | 3659 DD | 3775 DD | |
2020 Pest Trends (click to enlarge)
Visit WNC Orchard Insect Populations for archived posts.