Trezac™ Arylex™ active Herbicide – new registration for boomspray control of fireweed in ryegrass pasture | Greg Wells
Tracks
| Thursday, August 7, 2025 |
| 1:10 PM - 1:30 PM |
| Miconia Room |
Speaker
Mr Greg Wells
Field Scientist
Corteva Agriscience
Trezac™ Arylex™ active Herbicide – new registration for boomspray control of fireweed in ryegrass pasture | Greg Wells
Abstract
Abstract
Trezac™ Arylex™ active herbicide has previously been registered for control of broadleaf weeds in cereals, fallow and grass pastures and woody weeds in pasture by spot spray. The combination of two active ingredients, aminopyralid and Arylex active (Halauxifen methyl), gives strong control of a wide range of broadleaf and woody weeds.
New work has been conducted on fireweed in grass pasture, which has resulted in registration of Trezac by boom application at 600mL ha-1 plus Starane Advanced at 630mL ha-1. Trezac also has a short grazing withholding period of 7 days and short rainfast period of 1 hour, making it an important treatment as part of a program for management of fireweed in ryegrass pastures and a viable alternative to older treatment chemistries facing stringent regulatory restrictions, such as those containing bromoxynil.
This paper will summarise the research to gain this new registration.
™Trademark of Corteva Agriscience and its affiliated companies.
Trezac™ Arylex™ active herbicide has previously been registered for control of broadleaf weeds in cereals, fallow and grass pastures and woody weeds in pasture by spot spray. The combination of two active ingredients, aminopyralid and Arylex active (Halauxifen methyl), gives strong control of a wide range of broadleaf and woody weeds.
New work has been conducted on fireweed in grass pasture, which has resulted in registration of Trezac by boom application at 600mL ha-1 plus Starane Advanced at 630mL ha-1. Trezac also has a short grazing withholding period of 7 days and short rainfast period of 1 hour, making it an important treatment as part of a program for management of fireweed in ryegrass pastures and a viable alternative to older treatment chemistries facing stringent regulatory restrictions, such as those containing bromoxynil.
This paper will summarise the research to gain this new registration.
™Trademark of Corteva Agriscience and its affiliated companies.
Biography
Greg Wells has worked in field science R&D with Corteva or previous organisations for 35 years and prior to that was a weed scientist with QDPI based in Toowoomba, Qld. In that time Greg has worked on many pasture and woody weed projects from Nth Qld to Vic.
