Isoxaben (Trellis SC, Gallery SC)
WSSA Group 21: cell wall synthesis inhibitor
A pre-emergence applied herbicide for the control of many annual broadleaf weeds.
Available for non-bearing (Gallery) and bearing (Trellis) vineyards, but do not apply to newly transplanted vines until the soil has settled and is free of cracks. Do not apply Trellis within 165 days of harvest. Must be incorporated within 21 days and before weeds emerge. Activate with 0.5 inch of water or shallow cultivation before weeds emerge. Most effective when applied to soil that is debris free. For bearing vineyards, do not make more than 2 applications per year up to a max use rate of 1 lb of active ingredient per acre per year. Select application rates based on weeds present as listed on the label.
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 isoxaben on Grapes
Post-Plant
| Target | Rate of application | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Annual Broadleaf Weeds | 16-31 fl oz | 12 | 165 | 21 | Do not allow spray contact with new leaves. Trellis may be used on bearing vineyards, but not within 165 days of harvest. |
Pre-Emergence (Weeds)
| Target | Rate of application | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Annual Broadleaf Weeds | 16-31 fl oz | 12 | 165 | 21 | Do not allow spray contact with new leaves. Trellis may be used on bearing vineyards, but not within 165 days of harvest. |