Herbicide Mode of Action Table

Herbicide Mode of Action Groups

List of approved active constituents in each “Group” and, for ease of identification, 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.

High Resistance Risk

GROUP A Inhibitors of acetyl co-enzyme A carboxylase (Inhibitors of fat synthesis/ACC’ase inhibitors)
clodinafop (Topik®), cyhalofop (Barnstorm®), diclofop (Cheetah® Gold*, Decision®*, Hoegrass®), fenoxaprop (Cheetah® Gold* , Wildcat®), fluazifop (Fusilade®), haloxyfop (Verdict®), propaquizafop (Shogun®), quizalofop (Targa®)
butroxydim (Factor®), clethodim (Select®), profoxydim (Aura®), sethoxydim (Cheetah® Gold*, Decision®*), tralkoxydim (Achieve®)
pinoxaden (Axial®)
GROUP BInhibitors of acetolactate synthase (ALS inhibitors), acetohydroxyacid synthase (AHAS)
imazamox (Intervix®*, Raptor®,), imazapic (Bobcat I-Maxx®*, Flame®, Midas®*, OnDuty®*), imazapyr (Arsenal Xpress®*, Intervix®*, Lightning®*, Midas®*, OnDuty®*), imazethapyr (Lightning®*, Spinnaker®)
Pyrimidinylthiobenzoates:bispyribac (Nominee®), pyrithiobac (Staple®)
azimsulfuron (Gulliver®), bensulfuron (Londax®), chlorsulfuron (Glean®), ethoxysulfuron (Hero®), foramsulfuron (Tribute®), halosulfuron (Sempra®), iodosulfuron (Hussar®), mesosulfuron (Atlantis®), metsulfuron (Ally®, Harmony®* M, Stinger®*, Trounce®*, Ultimate Brushweed®* Herbicide), prosulfuron (Casper®*), rimsulfuron (Titus®), sulfometuron (Oust®, Eucmix Pre Plant®*, Trimac Plus®*), sulfosulfuron (Monza®), thifensulfuron (Harmony®* M), triasulfuron, (Logran®, Logran® B Power®*), tribenuron (Express®), trifloxysulfuron (Envoke®, Krismat®*)
florasulam (Gangster®*, Paradigm®*, Vortex®*, X-Pand®*), flumetsulam (Broadstrike®), metosulam (Eclipse®), pyroxsulam (Crusader®, Rexade®*)

*              This product contains more than one active constituent

Moderate Resistance Risk

GROUP CInhibitors of photosynthesis at photosystem II (PS II inhibitors)
Amides:propanil (Stam®)
Benzothiadiazinones:bentazone (Basagran®, Basagran® M60*, Lawnweeder plus®*)
Nitriles:bromoxynil (Barrel®*, Buctril®, Buctril® MA*, Buffalo Pro Weedkiller®*, Eliminar C®*, Flight®*, Jaguar®*, Quadrant®*, Talinor®*, Triathlon®*, Velocity®*), ioxynil (Actril DS*, Totril®,)
Phenylcarbamates:phenmedipham (Betanal®)
Pyridazinones:chloridazon (Pyramin®)
Triazines: ametryn (Amigan®*, Gesapax® Combi*, Krismat®, Primatol Z®), atrazine (Gesapax® Combi*, Gesaprim®, Primextra® Gold*), cyanazine (Bladex®), prometryn (Bandit®*, Cotogard®*, Gesagard®), propazine (Agaprop®), simazine (Brunnings RTU Path Weeder®*, Gesatop®,)Yates Onceyear Path Weeder®*), terbuthylazine (Firestorm®*, Palmero TX®*, Terbyne®), terbutryn (Agtryne® MA*, Amigan®*, Igran®)
Triazinones:amicarbazone (Amitron®*), hexazinone (Bobcat I-Maxx®*, Velmac Plus®*, Velpar® K4*, Velpar® L), metribuzin (Aptitude®*, Sencor®)
Uracils:bromacil (Hyvar®, Krovar®*), terbacil (Eucmix Pre Plant®*, Sinbar®, Trimac Plus®*)
Ureas:diuron (Karmex®, Krovar®*, Velpar® K4*), fluometuron (Bandit®* , Cotogard®*, Cotoran®), linuron (Afalon®), methabenzthiazuron (Tribunil®), siduron (Tupersan®), tebuthiuron (Graslan®)
GROUP DInhibitors of microtubule assembly
Benzamides:propyzamide (Kerb®)
Benzoic acids:chlorthal (Dacthal®, Prothal®*)
Dinitroanilines:oryzalin (Rout®*, Surflan®), pendimethalin (Stomp®), prodiamine (Barricade®), trifluralin (Jetti Duo®*, Treflan®)
Pyridines:dithiopyr (Dimension®)
GROUP EInhibitors of mitosis / microtubule polymerisation
Carbamates:carbetamide (Carbetamex®), chlorpropham (Chlorpropham®)
GROUP FBleachers: Inhibitors of carotenoid biosynthesis at the phytoene desaturase step (PDS inhibitors)
Pyridazinones:norflurazon (Solicam®)
Pyridinecarboxamide:diflufenican (Brodal®, Gangster®*, Jaguar®*, Quadrant®*, Spearhead®*, Tigrex®*, Triathlon®*, Yates Pathweeder®*), picolinafen (Eliminar C®*, Flight®*, Paragon®*, Quadrant®*, Sniper®)
GROUP GInhibitors of protoporphyrinogen oxidase (PPOs)
Diphenylethers:acifluorfen (Blazer®), oxyfluorfen (Firestorm®*, Goal®, Rout®*, Yates Pathweeder®*)
N-phenylphthalimides:flumioxazin (Valor®)
Oxadiazoles:oxadiargyl® (Raft), oxadiazon (Ronstar®)
Phenylpyrazole:pyraflufen (Ecopar®, Pyresta®*)
Pyrimidindiones:butafenacil (B-Power®, Logran® B-Power®*, Resolva®*), saflufenacil (Sharpen®)
Triazolinones:carfentrazone (Affinity®, Aptitude®*, Broadway®*, Buffalo Pro Weedkiller®*, Silverado®*)
GROUP HBleachers: Inhibitors of 4-hydroxyphenyl-pyruvate dioxygenase (HPPDs)
Isoxazoles:isoxaflutole (Balance®, Palmero TX®*

benzofenap (Taipan ®), pyrasulfotole (Precept®*,Velocity®*)
Triketone::bicyclopyrone (Talinor®*)
GROUP IDisruptors of plant cell growth (Synthetic Auxins)
Arylpicolinate:florpyrauxifen (Ubeniq®), halauxifen (ForageMax®*, Paradigm®*, Pixxaro®*, Rexade®*)
Benzoic acids::dicamba (Banvel®, Banvel M®*, Barrel®*, Casper®*, Lawnweeder plus®*, Mecoban®, Methar Tri-Kombi®*, Nuturf Millennium®*)
Phenoxycarboxylic acids:

2,4-D (Actril DS®*, Amicide®, Fallow Boss Tordon®*, Methar Tri-Kombi®*, Pyresta®*, Vortex®*), 2,4-DB (Trifolamine®), dichlorprop (Lantana 600®), MCPA (Agtryne® MA*, Banvel M®*, Barrel®*, Basagran® M60*, Buctril® MA*, Flight®*, Lawnweeder plus®*, MCPA (Buffalo Pro Weedkiller®*, Midas®*, Paragon®*, Precept®*, Quadrant®*, Silverado®*, Spearhead®*, Tigrex®*, Tordon 242®*, Triathlon®*), MCPB (Legumine®), mecoprop (Mecoban®, Mecopropamine®, Methar Tri Kombi®*, Multiweed®*)
Pyridine carboxylic acids:

aminopyralid (Fallow Boss Tordon®*, ForageMax®*, Grazon Extra®*, Hotshot®*, Stinger®*, Vigilant II®*), clopyralid (Lontrel®, Nuturf Millennium®*, Spearhead®*, Trimac Plus®*, Velmac Plus®*), fluroxypyr (Crest®*, Hotshot®*, Pixxaro®*, Starane®), picloram (Fallow Boss Tordon®*, Grazon Extra®*, Tordon®, Tordon 242®*, Tordon Regrowth Master®*, Trinoc®*, Vigilant II®*), triclopyr (Garlon®, Grazon Extra®*, Tordon Regrowth Master®*, Tough Roundup® Weedkiller*, Ultimate Brushweed®* Herbicide)
Quinoline carboxylic acids:quinclorac (Drive®)
GROUP JInhibitors 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®)
GROUP KInhibitors of cell division / Inhibitors of very long chain fatty acids (VLCFA inhibitors)
Acetamides: napropamide (Altiplano®*, Devrinol®)
Chloroacetamides:dimethenamid (Frontier®-P, Outlook ®), metazachlor (Butisan®), metolachlor (Boxer® Gold*, Dual® Gold, Primextra® Gold*), propachlor (Prothal®*, Ramrod®)
Isoxazoline: pyroxasulfone (Sakura®)
GROUP LInhibitors of photosynthesis at photosystem I via electron diversion (PSI inhibitors)
Bipyridyls: diquat (Reglone®, Spray Seed®*), paraquat (Alliance®*, Gramoxone®, Spray Seed®*)
GROUP MInhibitors of 5-enolpyruvyl shikimate-3 phosphate (EPSP) synthase
Glycines: glyphosate (Arsenal Xpress®*, Broadway®*, Firestorm®*, Illico®*, Resolva®*, Roundup®, Tough Roundup® Weedkiller*, Trounce®*, Yates Pathweeder®*)
GROUP NInhibitors of glutamine synthetase
Phosphinic acids: glufosinate (Basta®, Liberty®)
GROUP OInhibitors of cell wall (cellulose) synthesis
Alkylazine:indaziflam (Specticle®)
Benzamides:isoxaben (Gallery®, X-Pand®*)
Nitriles:dichlobenil (Casoron®)
GROUP PInhibitors of auxin transport
Phthalamates:naptalam (Alanap-L®)
GROUP QBleachers: Inhibitors of carotenoid biosynthesis unknown target
Isoxazolidinones:clomazone (Altiplano®*, Command®)
Triazoles:amitrole (Alliance®*, Amitrole®, Brunnings RTU Pathweeder®*, Illico®*, Firestorm®*, Yates Onceyear Pathweeder®*)
GROUP RInhibitors of dihydropteroate synthase (DHP inhibitors)
Carbamates: asulam (Asulox®)
GROUP ZHerbicides with unknown and probably diverse sites of action
Arylaminopropionic acids:flamprop (Mataven L®)
Dicarboxylic acids:endothal (Endothal®)
Organoarsenicals:DSMA (disodium methylarsonate) (Methar®, Trinoc®*), MSMA (monosodium methylarsonate) (Daconate®)

*              This product contains more than one active constituent

URL: https://croplife.org.au/resources/programs/resistance-management/herbicide-moa-table-4/herbicide-moa-table-4-draft-2/
Content last updated: June 28, 2019

CropLife Australia’s Resistance Management Strategies provide a guide for crop protection product rotation through product groups. The strategies are a useful tool that supports farmers’ adoption of resistance management. All crop protection products must be handled and applied strictly as specified on the product label or APVMA permits.

These Resistance Management Strategies do not replace product labels. They are a guide only and do not endorse particular products, groups of products or cultural methods in terms of their performance. It is important to check with the Australian regulator’s (APVMA) product database for contemporary information on products and active constituents. The database can be sourced through www.apvma.gov.au

The information given in this strategy is provided in good faith and without any liability for loss or damage suffered as a result of its application and use. Advice given in this strategy is valid as at 27 June 2019. All previous versions of this strategy are now invalid.