Glufosinate (Rely 280)
WSSA Group 10: glutamine synthase inhibitor
Foliage applied, contact herbicide used to control annual broadleaf and grass weeds and to suppress perennial weeds. Apply when weeds are small and actively growing. Use as a directed spray. Avoid contact of spray or mist on new foliage or green shoots as severe vine injury may result. Use directed spray and shield young vines. Thorough coverage of target weeds is essential for control. No additional surfactant is needed. May be tank mixed with labeled residual herbicides to control later germinating weeds. Apply in a minimum of 20 gallons of water per acre. Apply only to grapevines established at least 1 year.
At least one weed species 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 glufosinate on Grapes
Sucker Management
| Target | Rate of application | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Sucker Management | See product-specific label See Label | 12 | 14 | 10 | Suckers must be young, green and uncallused and less than 12 inches long. Split applications 4 weeks apart are typically necessary. See product-specific labels for sucker control details. |
Post-Emergence (Weeds)
| Target | Rate of application | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Annual Broadleaf Weeds | See product-specific label See Label | 12 | 14 | 10 | Do not apply to vines established less than 1 year unless protected by non-porous wraps, grow tubes, or waxed containers. | |
| Annual Grasses | See product-specific label See Label | 12 | 14 | 10 | Do not apply to vines established less than 1 year unless protected by non-porous wraps, grow tubes, or waxed containers. | |
| Perennial Grasses | See product-specific label See Label | 12 | 14 | 10 | Do not apply to vines established less than 1 year unless protected by non-porous wraps, grow tubes, or waxed containers. |