spacingspacing Herbicide Classification Guide Search Group 1 – Acetyl CoA carboxylase (ACCase) inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesaryloxyphenoxy-propanoatesclodinafopDiscover NGdiclofopHoelonfenoxapropPuma, AcclaimfluazifopFusilade DXquizalofopAssure II, TargacyclohexanedionesclethodimSelect Max, Envoy, several otherssethoxydimPoast, several otherstralkoxydimAchievephenylpyrazolinepinoxadenAxial Group 2 – Acetolactate synthase (ALS) inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesimidazolinonesimazamoxRaptor, Beyond, Clearmax (Beyond + MCPA)imazapicPlateau, othersimazapyrArsenal, Chopper, several othersimazethapyrPursuit, otherssulfonylaminocarbonyltriazolinonesflucarbazoneEverest, otherspropoxycarbazoneOlympussulfonylureaschlorsulfuronGlean, TelarhalosulfuronSandea, othersmesosulfuronOspreymesosulfuron/propoxycarbazoneOlympus FlexmetsulfuronAlly, Escort, Cimarron, othersnicosulfuronAccent, othersprimisulfuronBeacon, othersprosulfuronPeak, SpiritrimsulfuronMatrix, otherssulfometuronOust, Spyder, otherssulfosulfuronMaverick, Outrider, CertaintythifensulfuronHarmony, othersthifensulfuron/tribenuronHarmony Extra, AffinitytriasulfuronAmber, otherstribenuronExpress, otherstriflusulfuronUpBeettriazolopyrimidinesflorasulamOrion (contains MCPA), otherspyroxsulamGoldSky (contains florasulam & fluroxypyr), PowerFlex Group 3 – Microtubule assembly inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesbenzamidespronamideKerbdinitroanalinesbenefinBalan, othersethalfluralinSonalan, othersoryzalinSurflan, otherspendimethalinProwl H2O, Pendulum, several othersprodiamineBarricade, Endurance, several otherstrifluralinTreflan, others Group 4 – Synthetic auxinsHerbicide chemical familyHerbicide common nameHerbicide trade namesbenzoic acidsdicambaBanvel, Clarity, several othersphenoxy acetic acids2,4-Dseveral2,4-DBseveralMCPseveralmecoprop (MCPP)severalpyridinesaminopyralidMilestone, several othersclopyralidStinger, othersfluroxypyrStarane, otherspicloramTordon K, Tordon 22KtriclopyrGarlon, Remedy, Renovatequinoline carboxylic acidsquincloracParamount, Drive, others Group 5 – Photosystem II inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesas-triazines hexazinoneVelpar, othersmetribuzinSencor, otherstriazinesatrazineAAtrex, otherssimazinePrincep, SimazineuracilsbromacilHyvar X, othersterbacilSinbar Group 6 – Photosystem II inhibitors (same site as groups 5 and 7 but different binding behavior)Herbicide chemical familyHerbicide common nameHerbicide trade namesbenzothiadiazolesbentazonBasagrannitrilesbromoxynilBuctril, Bromox, Bronate (contains MCPA), several others Group 7 – Photosystem II inhibitors (same site as groups 5 and 6 but different binding behavior)Herbicide chemical familyHerbicide common nameHerbicide trade namesureasdiuronKarmex, Direx, otherslinuronLorox, Linex, Layby Pro (Contains Diuron)tebuthiuronSpike, others Group 8 – Lipid synthesis inhibitors but not ACCase inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesthiocarbamatescycloateRo-NeetEPTC Eptam, ImperiumEPTC + safener EradicanetriallateFar-Go, Avadex, Buckle Group 9 – EPSP synthase inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesglycinesglyphosateRoundup, several others Group 10 – Glutamine synthase inhibitorsHerbicide chemical familyHerbicide common nameHerbicide trade namesphosphinic acidsglufosinateIgnite, Rely, Liberty, several others Group 12 – Bleaching: Inhibition of carotenoid biosynthesis at the phytoene desaturase step (PDS)Herbicide chemical familyHerbicide common nameHerbicide trade namespyridazinonenorflurazonSolicampyridinecarboxamidediflufenican, picolinafenotherbeflubutamid, fluridone, flurochloridone, flurtamoneSonar, others Group 14 – Inhibitors of protoporphyrinogen oxidase (Protox)Herbicide chemical familyHerbicide common nameHerbicide trade namesaryl-triazones carfentrazoneAim, several otherssulfentrazoneSpartan, othersdiphenylethersoxyfluorfenGoal, several othersacifluorfenBlazer, Status, TacklefomesafenReflex, Flexstar, FlexlactofenCobraN-phenylphthalimides flumicloracResourceflumioxazinChateau, Valor, otherspyrazolespyraflufenET, EdictpyrimidinedionesaflufenacilSharpenthiadiazolefluthiacetCadet Group 15 – Inhibitors of very-long chain fatty acid synthesisHerbicide chemical familyHerbicide common nameHerbicide trade namesacetamidesnapropamideDevrinolchloroacetamidesacetochlorHarness, Surpass, several othersalachlorMicroTech, several othersdimethenamid(-p) Outlook, othersmetolachlorStalwart, Dual, othersIsoxazolinepyroxasulfoneAnthem (contains fluthiacet), Fierce (contains flumioxazin, ZiduaoxyacetamidesflufenacetDefine, Axiom (contains metribuzin) Group 16 – UnknownHerbicide chemical familyHerbicide common nameHerbicide trade namesbenzofuranesethofumesateNortron, several others Group 17 – UnknownHerbicide chemical familyHerbicide common nameHerbicide trade namesorganoarsenicalsMSMAseveral Group 20 – Inhibitors of cell wall synthesis site AHerbicide chemical familyHerbicide common nameHerbicide trade namesnitrilesdichlobenilCasoron, others Group 22 – Photosystem I electron divertersHerbicide chemical familyHerbicide common nameHerbicide trade namesbipyridiliumsdiquatReglone, othersparaquatGramoxone Inteon, several others Group 26 – UnknownHerbicide chemical familyHerbicide common nameHerbicide trade namesbipyridiliumsdiquatReglone, othersparaquatGramoxone Inteon, several others Group 27 – Inhibitors of 4-HPPD* *hydroxyphenylpyruvatedioxygenaseHerbicide chemical familyHerbicide common nameHerbicide trade namesbipyridiliumsdiquatReglone, othersparaquatGramoxone Inteon, several others
