Oxyfluorfen (Galigan 2E, GoalTender)
WSSA Group 14: proto-porphyrinogen oxidase (PPO) inhibitor
Provides both pre-emergent and early post-emergent control of broadleaf weeds in dormant grapes. It is most effective post-emergence when the seedling weeds have less than four leaves. Post-emergence weed control can be improved by tank-mixing with appropriate partners and adjuvants.
Direct the spray toward the base of vines in late winter or spring, avoiding direct plant contact; apply to bare soil. Apply after harvest, but before bud-swell in spring. The closer grapes are to bud swell at time of application, the greater the chance of crop injury. Do not apply to grapes established less than 3 years unless they have been staked or trellised 3 feet above the ground. Do not apply to grapes that are not staked or trellised unless they are free-standing. Apply only to healthy vines. Overhead moisture within 3 to 4 weeks will enhance herbicidal activity. The maximum use rate is 2.0 pounds active ingredient per acre per season except for GoalTender. Maximum use of GoalTender with banded applications, is 4 pints per acre and 3 pints per acre per use season on a broadcast basis The lower rate is for control of susceptible broadleaf seedling weeds; the higher rate should be used for larger weeds or for preemergence control.
No weed species are resistant to this mode of action documented to occur in ID, OR, or WA; data from Heap, I.
The International Survey of Herbicide Resistant Weeds. Available at www.weedscience.org
Usage for oxyfluorfen on Grapes
Pre-Emergence (Weeds)
| Target | Rate of application | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Annual Broadleaf Weeds | 1-4 pt | 24 | - | 14 | For vineyards established at least 3 years. Check label for pre-emergence vs. post-emergence rates. | |
| Annual Grasses | 1.0-4.0 pt | 24 | - | 14 | For vineyards established at least 3 years. See label for specific pre-emergent and post-emergent application rates. Post-emergent applications for weeds smaller than 3-leaf stage. | |
| Annual Grasses | 1.0-4.0 pt | 24 | - | 14 | For vineyards established at least 3 years. Check label for pre-emergence vs. post-emergence rates. |
Post-Emergence (Weeds)
| Target | Rate of application | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Annual Broadleaf Weeds | 1-4 pt | 24 | - | 14 | For vineyards established at least 3 years. Check label for pre-emergence vs. post-emergence rates. | |
| Annual Grasses | 1.0-4.0 pt | 24 | - | 14 | For vineyards established at least 3 years. See label for specific pre-emergent and post-emergent application rates. Post-emergent applications for weeds smaller than 3-leaf stage. | |
| Annual Grasses | 1.0-4.0 pt | 24 | - | 14 | For vineyards established at least 3 years. Check label for pre-emergence vs. post-emergence rates. |