Chemical treatments used to compare herbicide effectiveness with manual cutting for control of Ailanthus in Shenandoah National Park, Virginia.
| Treatment code | Carrier system | Herbicide* | Herbicide rate (% v/v) |
|---|---|---|---|
| 1 | HY-Grade EC | Garlon 4 | 20 |
| 2 | HY-Grade EC | Garlon 4 | 20 |
| Stalker | 1 | ||
| 3 | HY-Grade EC | Garlon 4 | 15 |
| Stalker | 3 | ||
| 4 | HY-Grade EC | Garlon 4 | 20 |
| Stalker | 3 | ||
| 5 | Aqumix RTU | Garlon 4 | 20 |
| Tordon K | 5 | ||
| 6 | Eco-Pak RTU | Garlon 4 | 20 |
| Tordon K | 5 | ||
| 7 | Arborchem RTU | Garlon 4 | 20 |
| Tordon K | 5 | ||
| 8 | HY-Grade EC | Stalker | 9 |
| 9 | Manual cutting 7-15 cm above ground |
↵*Garlon 4 (triclopyr @ 480 gae/L); Stalker (imazapyr @ 240 gae/L); Tordon K (picloram @ 240 gae/L).