* Herbicide labels may have geographic, crop and buffer restrictions specific to Wisconsin. References to pesticide products in this publication are not an endorsement or criticism of one * (SEE OTHER SIDE FOR WISCONSIN HERBICIDE MODE OF ACTION CHART COMBINATION PRODUCTS) product over other similar products. You are responsible for using pesticides according to the manufacturer’s current label directions. Failure to do so violates the law. 03/2020 Chart data adopted from Weed Science Society of America Herbicide Site of Action (WSSA) classification list and current product labels.

Mode of Mode of action Group number & Herbicide site of action Chemical family Active ingredient Product trade name® example action Group number & Herbicide site of action Chemical family Active ingredient Product trade name® example desmedipham Alphanex Phenyl-carbamate fenoxaprop-P Fusion, others phenmedipham Component of Betamix Aryloxyphenoxy-propionate atrazine AAtrex, others ‘FOPs’ fluazifop-P Fusilade DX quizalofop-P Assure II, Targa Photosystem II Inhibitors Triazine prometryn Caparol 5 1 ACCase Inhibitors Cyclohexanedione clethodim Select Max, others (different binding than 6 & 7) simazine Princep ‘DIMs’ sethoxydim Poast, Poast Plus hexazinone Component of Velpar AlfaMax Triazinone Phenylpyrazoline metribuzin Mauler, Tricor, others pinoxaden Axial XL

Lipid Synthesis Inhibitors Lipid Synthesis ‘DENs’ Uracil terbacil Sinbar Photosystem II Inhibitors Benzothiadiazole bentazon Basagran, others

Photosynthesis Inhibitors Photosynthesis 6 imazamox Raptor, Beyond (different binding than 5 & 7) Nitrile bromoxynil Brox, others imazapic Plateau Photosystem II Inhibitors diuron Diuron Imidazolinone 7 Urea imazaquin Scepter (different binding than 5 & 6) linuron Linex, Lorox

imazethapyr Pursuit Pyrimidinyl (thio) benzoate bispyribac-sodium Tradewind flucarbazone-sodium Everest, Sierra 10 Glutamine Synthetase Inhibitor Organophosphorus glufosinate Liberty, Scout Inhibitor Sulfonylaminocarbonyl-triazolinone propoxycarbazone-sodium Component of Rimfire Max Nitrogen Metabolism thiencarbazone-methyl Component of Corvus, others chlorimuron-ethyl Classic 13 Diterpene Synthesis Inhibitor Isoxazolidinone clomazone Command 3ME chlorsulfuron Glean XP Isoxazole isoxaflutole Balance Flexx foramsulfuron Component of Derigo Pyrazole pyrasulfotole Component of Huskie halosulfuron-methyl Permit 27 Pyrazolone topramezone Armezon, Impact HPPD Inhibitors iodosulfuron-methyl Component of Derigo mesotrione Callisto 2 ALS Inhibitors mesosulfuron Component of Rimfire Max Pigment Inhibitors Triketone tembotrione Laudis metsulfuron-methyl Ally XP bicyclopyrone Component of Acuron Sulfonylurea nicosulfuron Accent Q primisulfuron-methyl Beacon sulfentrazone Spartan prosulfuron Peak Triazolinone carfentrazone-ethyl Aim Amino Acid Synthesis Inhibitors Synthesis Amino Acid rimsulfuron Resolve fluthiacet-methyl Cadet thifensulfuron-methyl Harmony acifluorfen Ultra Blazer fomesafen Flexstar, Reflex, others tribenuron-methyl Express, Express XP 14 PPO Inhibitors Diphenylether triflusulfuron-methyl UpBeet lactofen Cobra, Phoenix cloransulam-methyl FirstRate oxyfluorfen Component of Pindar GT, others flumiclorac Resource florasulam Component of Orion, others N-phenylphthalimide Triazolopyrimidine flumetsulam Python flumioxazin Valor EZ, Valor SX Cell Membrane Disrupters Cell penoxsulam Component of Pindar GT, others Pyrimidinedione saflufenacil Sharpen diquat Reglone pyroxsulam PowerFlex HL 22 Photosystem I Electron Diverter Bipyridylium 9 EPSP Synthase Inhibitor Glycine glyphosate Abundit Edge, Roundup, others paraquat Gramoxone SL Benzamide pronamide Kerb Arylpicolinate halauxifen-methyl Elevore, Component of Quelex ethalfluralin Sonalan Banvel, Clarity, DiFlexx, Engenia, Xtendi- 3 Microtubule Inhibitors Benzoic acid dicamba Dinitroaniline pendimethalin Prowl H2O, others Seedling Max, others Inhibitors Root Growth Growth Root trifluralin Treflan, others aminopyralid Milestone clopyralid Stinger Lipid Synthesis Inhibitors cycloate Ro-Neet 4 Synthetic Auxin Pyridine carboxylic acid 8 Thiocarbamate fluroxypyr Starane Ultra (not ACCase) EPTC Eptam 7E triclopyr Trycera Breakfree NXT, Degree, Harness, Surpass,

Growth Regulators Growth acetochlor Quinoline carboxylic acid quinclorac Facet L Warrant, others 15 Long-chain Fatty Acid Inhibitors Chloroacetamide 2,4-D 2,4-D, Enlist One S-metolachlor Dual II Magnum, EverpreX, others

Phenoxy-carboxylic-acid Inhibitors MCPA MCPA, others dimethenamid-P Outlook 19 Auxin Transport Semicarbazone diflufenzopyr Component of Status, Distinct Oxyacetamide flufenacet Component of Axiom Seedling Shoot Growth Isoxazoline pyroxasulfone Zidua This publication is available from the Nutrient and Pest Management Program. For copies, please contact us at: email ([email protected]), phone (608) 265-2660 or download at ipcm.wisc.edu 16 Specific Site Unknown Benzofurane ethofumesate Nortron * (SEE OTHER SIDE FOR * Herbicide labels may have geographic, crop and buffer restrictions specific to Wisconsin. References to pesticide products in this publication are not an endorsement or WISCONSIN HERBICIDE COMBINATION PRODUCTS MODE OF ACTION KEY ) criticism of one product over other similar products. You are responsible for using pesticides according to the manufacturer’s current label directions. Failure to do so 03/2020 violates the law. Chart data adopted from Weed Science Society of America Herbicide Site of Action (WSSA) classification list and current product labels. Active Product trade Site of Active Product trade Site of Multiple products included in this chart have the formulation abbreviation included in the name, which are not included on this chart [abbreviations: solution concentrate Premix trade name® ingredient name® example action Premix trade name® ingredient name® example action (SC), emulsifiable concentrate (EC), flowable concentrate (L or AS), wettable powders (W or WP), granular (G), water soluble (S,SP), wettable powders, water dispersible bicyclopyrone -- 27 thiencarbazone -methyl -- 2 CAPRENO granules, or dry flowables (WP or WDG or DF)]. mesotrione Callisto 27 tembotrione Laudis 27 ACURON atrazine AAtrex 5 CINCH ATZ/ S-metolachlor Dual lI Magnum 15 S-metolachlor Dual lI Magnum 15 CINCH LITE ATZ atrazine AAtrex 5 Active Product trade Site of Active Product trade Site of bicyclopyrone -- 27 2,4-D 2,4-D 4 Premix trade name® ingredient name® example action Premix trade name® ingredient name® example action COLT + SALVO ACURON FLEXI mesotrione Callisto 27 fluroxypyr Starane 4 clopyralid Stinger 4 sulfentrazone Spartan 14 S-metolachlor Dual lI Magnum 15 MCPA MCPA 4 HORNET SPARTAN ELITE COLT + SWORD flumetsulam Python 2 S-metolachlor Dual lI Magnum 15 thifensulfuron-methyl Harmony 2 fluroxypyr Starane 4 AFFINITY BROADSPEC pyrasulfotole -- 27 prosulfuron Peak 2 tribenuron-methyl Express 2 thiencarbazone-methyl -- 2 HUSKIE SPIRIT CORVUS bromoxynil Brox 6 primisulfuron-methyl Beacon 2 thifensulfuron-methyl Harmony 2 isoxaflutole Balance Flexx 27 pyrasulfotole -- 27 clopyralid Stinger 4 AFFORIA tribenuron-methyl Express 2 clopyralid Stinger 4 STANZA CURTAIL HUSKIE COMPLETE bromoxynil Brox 6 flumetsulam Python 2 flumioxazin Valor 14 2,4-D 2,4-D 4 thiencarbazone-methyl -- 2 florasulam -- 2 STARANE FLEX pyroxasulfone Zidua 15 clopyralid Stinger 4 rimsulfuron Resolve, Matrix 2 fluroxypyr Starane Ultra 4 CURTAIL M INSTIGATE ANTHEM ATZ fluthiacet-methyl Cadet 14 MCPA MCPA 4 mesotrione Callisto 27 diflufenzopyr -- 19 atrazine AAtrex 5 acetochlor Degree 15 STATUS DEGREE XTRA KEYSTONE/ acetochlor Surpass NXT 15 dicamba Clarity 4 pyroxasulfone Zidua 15 atrazine AAtrex 5 ANTHEM FLEX KEYSTONE NXT atrazine AAtrex 5 STEADFAST/ nicosulfuron Accent Q 2 carfentrazone-ethyl Aim 14 dicamba DiFlexx 4 DIFLEXX DUO mesotrione Callisto 27 STEADFAST Q rimsulfuron Resolve 2 pyroxasulfone Zidua 15 tembotrione Laudis 27 ANTHEM MAXX LEXAR EZ S-metolachlor Dual lI Magnum 15 bentazon Basagran 6 fluthiacet-methyl Cadet 14 2,4-D 2,4-D 4 STORM ENLIST DUO atrazine AAtrex 5 acifluorfen Ultra Blazer 14 topramezone Armezon 27 glyphosate glyphosate 9 mesotrione Callisto 27 acetochlor Surpass NXT 15 ARMEZON PRO SURESTART/ dimethenamid-P Outlook 15 chlorimuron-ethyl Classic 2 LUMAX EZ S-metolachlor Dual lI Magnum 15 clopyralid Stinger 4 sulfentrazone Spartan 14 ENLITE thifensulfuron-methyl Harmony 2 SURESTART II AUTHORITY ASSIST atrazine AAtrex 5 flumetsulam Python 2 imazethapyr Pursuit 2 flumioxazin Valor 14 fluthiacet-methyl Cadet 14 flumioxazin Valor 14 sulfentrazone Spartan 14 chlorimuron-ethyl Classic 2 MARVEL SURVEIL AUTHORITY ELITE fomesafen Flexstar 14 cloransulam-methyl FirstRate 2 S-metolachlor Dual lI Magnum 15 ENVIVE thifensulfuron-methyl Harmony 2 saflufenacil Sharpen 14 chlorimuron-ethyl Classic 2 sulfentrazone Spartan 14 flumioxazin Valor 14 OPTILL SYNCHRONY XP AUTHORITY FIRST imazethapyr Pursuit 2 thifensulfuron-methyl Harmony 2 cloransulam-methyl FirstRate 2 S-metolachlor Dual lI Magnum 15 florasulam -- 2 bromoxynil Brox 6 sulfentrazone Spartan 14 EXPERT atrazine AAtrex 5 ORION TALINOR AUTHORITY MTZ MCPA MCPA 4 bicyclopyrone -- 27 metribuzin Tricor 5 glyphosate glyphosate 9 thifensulfuron-methyl Harmony 2 dicamba XtendiMax 4 PANOFLEX TAVIUM AUTHORITY MAX/ sulfentrazone Spartan 14 EXTREME, imazethapyr Pursuit 2 tribenuron-methyl Express 2 S-metolachlor Dual lI Magnum 15 AUTHORITY XL chlorimuron-ethyl Classic 2 THUNDERMASTER glyphosate glyphosate 9 penoxsulam -- 2 acetochlor Harness 15 AUTHORITY EDGE\ sulfentrazone Spartan 14 flumioxazin Valor 14 PINDAR GT FIERCE/FIERCE EZ oxyfluorfen -- 14 TRIPLEFLEX II clopyralid Stinger 4 AUTHORITY SUPREME pyroxasulfone Zidua 15 pyroxasulfone Zidua 15 pyroxasulfone Zidua 15 flumetsulam Python 2 PERPETUO iodosulfuron Autumn 2 flumioxazin Valor 14 flumiclorac-pentyl Resource 14 chlorimuron-ethyl Classic 2 AUTUMN SUPER FIERCE MTZ thiencarbazone -- 2 pyroxasulfone Zidua 15 halauxifen Elevore 4 TRIVENCE flumioxazin Valor 14 PIXARRO pinoxaden Axial XL 1 metribuzin Tricor 5 fluroxypyr Starane 4 metribuzin Tricor 5 AXIAL BOLD fenoxaprop-P Fusion 1 flumioxazin Valor 14 S-metolachlor Dual lI Magnum 15 flumioxazin Valor 14 PREFIX VALOR XLT pinoxaden Axial XL 1 FIERCE XLT pyroxasulfone Zidua 15 fomesafen Flexstar 14 chlorimuron-ethyl Classic 2 AXIAL STAR fluroxypyr Starane 4 chlorimuron-ethyl Classic 2 halauxifen-methyl Arylex 4 imazamox Raptor 2 QUELEX VARISTO flufenacet -- 15 fomesafen Flexstar 14 florasulam -- 2 bentazon Basagran 6 AXIOM FLEXSTAR GT 3.5 metribuzin Tricor 5 glyphosate glyphosate 9 rimsulfuron Resolve 2 hexazinone Velpar 5 REALM Q VELPAR ALFAMAX rimsulfuron Resolve 2 FOREFRONT HL/ aminopyralid Milestone 4 mesotrione Callisto 27 diuron Diuron 7 BASIS BLEND thifensulfuron-methyl Harmony 2 FOREFRONT R&P 2,4-D 2,4-D 4 clopyralid Stinger 4 saflufenacil Sharpen 14 VERDICT BICEP II MAGNUM / S-metolachlor Dual lI Magnum 15 acetochlor TopNotch 15 FULTIME NXT RESICORE acetochlor Surpass NXT 15 dimethenamid-P Outlook 15 BICEP LITE II MAGNUM atrazine AAtrex 5 atrazine AAtrex 5 mesotrione Callisto 27 fomesafen Reflex 14 WARRANT ULTRA S-metolachlor Dual lI Magnum 15 fluazifop-P Fusilade DX 1 rimsulfuron Resolve 2 acetochlor Warrant 15 BOUNDARY FUSION RESOLVE Q metribuzin Tricor 5 fenoxaprop-P Puma 1 thifensulfuron-methyl Harmony 2 MCPA MCPA 4 BREAKFREE NXT ATZ / acetochlor Breakfree NXT 15 pyroxsulam PowerFlex HL 2 nicosulfuron Accent Q 2 WELD fluroxypyr Starane 4 REVULIN Q BREAKFREE NXT LITE atrazine AAtrex 5 GOLDSKY florasulam -- 2 mesotrione Callisto 27 clopyralid Stinger 4 S-metolachlor Dual lI Magnum 15 fluroxypyr Starane 4 propoxycarbazone-sodium -- 2 clopyralid Stinger 4 BROADAXE XC RIMFIRE MAX WIDEMATCH sulfentrazone Spartan 14 S-metolachlor Dual lI Magnum 15 mesosulfuron -- 2 fluroxypyr Starane 4 mesotrione Callisto 27 HALEX GT mesotrione Callisto 27 S-metolachlor Dual lI Magnum 15 fenoxaprop-P -- 1 CALLISTO GT SEQUENCE WOLVERINE glyphosate glyphosate 9 glyphosate glyphosate 9 glyphosate glyphosate 9 pyrasulfotole -- 27 ADVANCED mesotrione Callisto 27 HARMONY EXTRA/ thifensulfuron-methyl Harmony 2 mesotrione Callisto 27 bromoxynil Brox 6 CALLISTO XTRA SOLSTICE atrazine AAtrex 5 HARMONY EXTRA XP tribenuron-methyl Express 2 fluthiacet-methyl Cadet 14 dicamba Banvel 4 YUKON CANOPY/ chlorimuron-ethyl Classic 2 acetochlor Harness 15 sulfentrazone Spartan 14 halosulfuron-methyl Permit 2 HARNESS MAX SONIC CANOPY BLEND metribuzin Tricor 5 mesotrione Callisto 27 cloransulam-methyl FirstRate 2 imaezthapyr Pursuit 2 chlorimuron-ethyl Classic 2 HARNESS XTRA/ acetochlor Harness 15 sulfentrazone Spartan 14 ZIDUA PRO saflufenacil Sharpen 14 CANOPY EX SPARTAN CHARGE tribenuron-methyl Express 2 HARNESS XTRA 5.6L atrazine AAtrex 5 carfentrazone-ethyl Aim 14 pyroxasulfone Zidua 15