Moderate resistance risk
Globally herbicide resistance to (the Group J herbicide mode of action) has been confirmed and documented in more than 10 weed species across more than 6 countries.
Group J resistance exists in Australia in 3 weed species including 2 populations of serrated tussock, 6 populations of giant Parramatta grass and more than 50 populations of annual ryegrass that are confirmed resistant to Group J herbicides.
To assist in delaying the onset of resistance, where possible rotate or tank mix Group J herbicides with herbicides from other modes of action.
Use Group J herbicides at robust rates eg the maximum label rates to ensure high levels of weed control particularly when targeting annual ryegrass.
The above recommendations should be incorporated into an Integrated Weed Management (IWM) program. In all cases try to ensure surviving weeds from any treatment do not set and shed viable seed. Keep to integrated strategies mentioned in this brochure including rotation of mode of action groups. Make sure you rotate between products from different mode of action groups. Always consult the product label prior to use.
GROUP J Inhibitors of lipid synthesis (Not ACCase inhibitors)
Benzofurans: ethofumesate (Tramat®)
Chlorocarbonic acids: 2,2–DPA (Dalapon®, Yates Onceyear Pathweeder®*), flupropanate (Frenock®)
Phosphorodithioates: bensulide (Prefar®)
Thiocarbamates: EPTC (Eptam®), molinate (Ordram®), pebulate (Tillam®), prosulfocarb (Arcade®, Boxer® Gold*, Diablo Duo®*), thiobencarb (Saturn®), triallate (Avadex®, Diablo Duo®*, Jetti Duo®*), vernolate (Vernam®)
* This product contains more than one active constituent
List of chemical families, approved active constituents and, in parenthesis, the trade name of the first registered product or successor. Refer to the APVMA website (www.apvma.gov.au) to obtain a complete list of registered products from the PUBCRIS database.
Content last updated: June 28, 2019