HERBICIDE
CLASSIFICATION
Repeated use of herbicides with the same site of action can result
in the development of herbicide-resistant weed populations.
by MODE OF
ACTION
(effect on plant growth)
by PREMIX
This chart groups herbicides by their modes of action to assist you in selecting
herbicides 1) to maintain greater diversity in herbicide use and 2) to rotate
among effective herbicides with different sites of action to delay the development
of herbicide resistance.
SITE-OF-ACTION
GROUP
NUMBER OF RESISTANT
WEED SPECIES IN U.S.
CHEMICAL
FAMILY
SITE OF ACTION
COMPONENT
ACTIVE
PRODUCT
INGREDIENT EXAMPLES
(TRADE NAME®)
1
ACCASE INHIBITORS
(acetyl CoA carboxylase)
15
Cyclohexanedione (dims)
Phenylpyrazolin
clodinafop
Discover NG
cyhalofop
fenoxaprop
fluazifop
quizalofop
clethodim
sethoxydim
pinoxaden
Clincher
Ricestar, Tecoma, others
Fusilade DX
Assure II, Targa
Select Max, others
Poast, Poast Plus
Axial XL
AMINO ACID SYNTHESIS INHIBITORS
Imidazolinone
Pyrimidinylthiobenzoic acid
Sulfonylaminocarbonyltriazolinones
2
ALS INHIBITORS
(acetolactate synthase)
47
Sulfonylurea
Triazolopyrimidine
9
EPSP SYNTHASE INHIBITOR
(5-enolpyruvyl-shikimate3-phosphate)
15
Organophosphorus
imazamox
Raptor, Beyond, Clearmax
imazapic
imazaquin
imazethapyr
bispyribac
pyrithiobac
flucarbazone
propoxycarbazone
thiencarbazone
bensulfuron
chlorimuron
chlorsulfuron
halosulfuron
iodosulfuron
mesosulfuron
metsulfuron
nicosulfuron
orthosulfamuron
primisulfuron
prosulfuron
rimsulfuron
sulfosulfuron
thifensulfuron
triasulfuron
tribenuron
trifloxysulfuron
triflusulfuron
cloransulam
florasulam
flumetsulam
penoxsulam
pyroxsulam
Plateau
Scepter
Pursuit, Newpath
Regiment
Staple
Everest, Pre-Pare, Sierra
Olympus
Varro
Londax
Classic
Glean
Permit
Autumn
Osprey
Ally
Accent Q, Zest
Strada
Beacon
Peak
Resolve, Matrix
Maverick
Harmony
Amber
Express
Envoke
UpBeet
FirstRate
component of Orion
Python, Accolade
Grasp
PowerFlex HL
glyphosate
Roundup, Touchdown,
several
PREMIX
ACURON
Acuron Flexi
AFFINITY BROADSPEC
(Affinity Tankmix)
AFFORIA
AGILITY SG
ALLY EXTRA
ANTHEM ATZ
ANTHEM FLEX
ANTHEM MAXX
ARMEZON PRO
AUTHORITY ASSIST
AUTHORITY ELITE
AUTHORITY FIRST
AUTHORITY MTZ
AUTHORITY XL
(Authority Maxx)
AUTUMN SUPER
AXIAL STAR
AXIOM
BASIS BLEND
BETAMIX
GROWTH REGULATORS
4
T1R1 AUXIN RECEPTORS
(synthetic auxins)
8
Arylpicolinate
halauxifen
Arylex*, Elevore*
Benzoic acid
dicamba
Banvel, Clarity, DiFlexx, Engenia,
FeXapan*, XtendiMax, others
Carboxylic acid
Phenoxy
19
AUXIN TRANSPORT INHIBITOR
0
Semicarbazone
aminopyralid
clopyralid
Milestone
Stinger
fluroxypyr
triclopyr
quinclorac
2,4-D
MCPA
Starane
Grandstand
Facet
2,4-D, others
MCPA, others
diflufenzopyr
component of Status
Phenylcarbamate
5
PHOTOSYSTEM II INHIBITORS
(different binding than 6 & 7)
7
PHOTOSYSTEM II INHIBITORS
(different binding than 5 & 7)
PHOTOSYSTEM II INHIBITORS
(different binding than 5 & 6)
26
1
9
desmedipham
Betenex
GLUTAMINE SYNTHETASE
INHIBITOR
1
Benzothiadiazole
Nitrile
bentazon
bromoxynil
Basagran, others
Buctril, others
CAPRENO
Amide
propanil
diuron
fluometuron
linuron
SuperWham
Direx, Karmex
Cotoran
Lorox, Linex
Urea
Organophosphorus
1
Isoxazolidinone
glufosinate
Liberty, Cheetah
fluridone
Sonar
Isoxazole
Pyrazole
Pyrazolone
clomazone
isoxaflutole
pyrasulfotole
topramezone
mesotrione
tembotrione
bicyclopyrone
Command
Balance Flexx
component of Huskie
Armezon, Impact
Callisto
Laudis
component of Acuron
CELL MEMBRANE DISRUPTERS
sulfentrazone
Aryl triazinone
Diphenylether
N-phenylphthalimide
Pyrimidinedione
PHOTOSYSTEM I
ELECTRON DIVERTER
5
CHEETAH MAX
COLT + SWORD
Triketone
22
CARNIVORE
COLT + SALVO
(Trump Card)
DOXP SYNTHASE INHIBITOR
3
CANOPY EX
CLEARPATH
13
PPO INHIBITORS
CALLISTO XTRA
CINCH ATZ
(Cinch ATZ Lite)
none recognized
2
CALLISTO GT
Uracil
1
14
BROADHEAD
CANOPY
PHYTOENE DESATURASE
(PDS) INHIBITOR
HPPD INHIBITORS
BROADAXE XC
Princep
Velpar
Metribuzin, others
Sinbar
12
27
BREAKFREE NXT ATZ
(Breakfree NXT Lite)
simazine
hexazinone
metribuzin
terbacil
Triazine
PIGMENT INHIBITORS
(1-DEOXY-D-XYULOSE 5-PHOSPHATE)
BRAKE F2
component of Betamix
AAtrex, others
Caparol
NITROGEN METABOLISM INHIBITOR
10
BOUNDARY
phenmedipham
atrazine
prometryn
Triazinone
6
BICEP II MAGNUM
(Bicep Lite II Magnum)
BRONATE
PHOTOSYNTHESIS INHIBITORS
Bipyridylium
carfentrazone
fluthiacet
acifluorfen
fomesafen
lactofen
flumiclorac
flumioxazin
saflufenacil
diquat
paraquat
Spartan
Aim
Cadet
Ultra Blazer
Flexstar, Reflex, others
Cobra, Phoenix
Resource
Valor, Rowel
Sharpen
Reglone
Gramoxone SL
CORVUS
CURTAIL
CURTAIL M
DEGREE XTRA
DIFLEXX DUO
DILIGENT*
ENLIST DUO
ENLITE
ENVIVE
SEEDLING ROOT GROWTH INHIBITORS
3
MICROTUBULE INHIBITORS
6
Benzamide
pronamide
Kerb
Dinitroaniline
ethalfluralin
pendimethalin
trifluralin
Sonalan
Prowl H2O, others
Treflan, others
8
15
16
LIPID SYNTHESIS INHIBITOR
(not ACCase)
LONG-CHAIN FATTY ACID
INHIBITORS
SPECIFIC SITE UNKNOWN
5
Thiocarbamate
butylate
Sutan +
cycloate
EPTC
thiobencarb
triallate
Ro-Neet
Eradicane, Eptam
Bolero
Far-Go
acetochlor
Degree, Harness, Surpass NXT,
Topnotch, Warrant, others
Oxyacetamide
Pyrazole
alachlor
s-metolachlor
dimethenamid-P
flufenacet
pyroxasulfone
Intrro, Micro-Tech
Dual Magnum, others
Outlook
Define
Zidua
Benzofurane
ethofumesate
Nortron
Chloroacetamide
1
0
NUCLEIC ACID INHIBITOR
EXTREME
FIERCE
FIERCE XLT
FINESSE
FINESSE GRASS
AND BROADLEAF
FLEXSTAR GT
FOREFRONT HL
FOXFIRE
UNDEFINED
17
EXPERT
FIELD MASTER
SEEDLING SHOOT GROWTH INHIBITORS
1
Arsenical
MSMA
MSMA
For more information and links to additional resources,
visit TakeActionOnWeeds.com
TAKE ACTION IS ENDORSED BY THE FOLLOWING ORGANIZATIONS:
COMPONENT
SITE-OF-ACTION
GROUP
LIPID SYNTHESIS INHIBITORS
Aryloxyphenoxypropionate (fops)
This chart lists premix herbicides alphabetically by their trade names
so you can identify the premix’s component herbicides and their respective
site-of-action groups. Refer to the Site-of-Action chart on the left
for more information.
FULTIME NXT
FUSION
GANGSTER
GOLDSKY
HALEX GT
SITE-OF-ACTION
GROUP
PREMIX
ACTIVE
INGREDIENT
TRADE
NAME®
bicyclopyrone
mesotrione
atrazine
s-metolachlor
bicyclopyrone
mesotrione
s-metolachlor
thifensulfuron
tribenuron
thifensulfuron
tribenuron
flumioxazin
dicamba
thifensulfuron
tribenuron
metsulfuron
thifensulfuron
tribenuron
metsulfuron
pyroxasulfone
fluthiacet
atrazine
pyroxasulfone
carfentrazone
pyroxasulfone
fluthiacet
tropramezone
dimethenamid-P
sulfentrazone
imazethapyr
sulfentrazone
s-metolachlor
sulfentrazone
cloransulam
sulfentrazone
metribuzin
sulfentrazone
chlorimuron
iodosulfuron
thiencarbazone
pinoxaden
fluroxypyr
flufenacet
metribuzin
–––––
Callisto
AAtrex
Dual II Magnum
–––––
Callisto
Dual II Magnum
Harmony
Express
Harmony
Express
Valor
Clarity
Harmony
Express
Ally
Harmony
Express
Ally
Zidua
Cadet
AAtrex
Zidua
Aim
Zidua
Cadet
Armezon
Outlook
Spartan
Pursuit
Spartan
Dual Magnum
Spartan
FirstRate
Spartan
Metribuzin
Spartan
Classic
Autumn
Varro
Axial XL
Starane
Define
Metribuzin
rimsulfuron
thifensulfuron
desmedipham
phenmedipham
s-metolachlor
atrazine
s-metolachlor
metribuzin
fomesafen
fluridone
acetochlor
atrazine
s-metolachlor
sulfentrazone
carfentrazone
quinclorac
bromoxynil
MCPA
mesotrione
glyphosate
mesotrione
atrazine
chlorimuron
metribuzin
chlorimuron
tribenuron
thiencarbazone
tembotrione
MCPA
clopyralid
bromoxynil
Resolve
Harmony
Betenex
–––––
Dual II Magnum
AAtrex
Dual Magnum
Metribuzin
Flexstar
Sonar
Breakfree NXT
AAtrex
Dual Magnum
Spartan
Aim
Facet
Buctril
MCPA
Callisto
glyphosate
Callisto
AAtrex
Classic
Metribuzin
Classic
Express
Varro
Laudis
MCPA
Stinger
Buctril
glufosinate
Cheetah
10
fomesafen
s-metolachlor
atrazine
quinclorac
imazethapyr
2,4-D
fluroxypyr
MCPA
fluroxypyr
thiencarbazone
isoxaflutole
clopyralid
2,4-D
clopyralid
MCPA
acetochlor
atrazine
dicamba
tembotrione
chlorimuron
rimsulfuron
flumioxazin
2,4-D
glyphosate
chlorimuron
thifensulfuron
flumioxazin
chlorimuron
thifensulfuron
flumioxazin
s-metolachlor
atrazine
glyphosate
imazethapyr
glyphosate
acetochlor
atrazine
glyphosate
flumioxazin
pyroxasulfone
flumioxazin
pyroxasulfone
chlorimuron
chlorsulfuron
metsulfuron
chlorsulfuron
flucarbazone
fomesafen
glyphosate
aminopyralid
2,4-D
fenoxaprop
pinoxaden
acetochlor
atrazine
fluazifop
fenoxaprop
flumioxazin
cloransulam
pyroxsulam
florasulam
fluroxypyr
s-metolachlor
mesotrione
glyphosate
Reflex
Dual II Magnum
AAtrex
Facet
Newpath
2,4-D
Starane
MCPA
Starane
Varro
Balance Flexx
Stinger
2,4-D
Stinger
MCPA
Degree
AAtrex
DiFlexx
Laudis
Classic
Resolve
Valor
2,4-D
glyphosate
Classic
Harmony
Valor
Classic
Harmony
Valor
Dual Magnum
AAtrex
glyphosate
Pursuit
glyphosate
Harness
AAtrex
glyphosate
Valor
Zidua
Valor
Zidua
Classic
Glean
Ally
Glean
Everest
Flexstar
glyphosate
Milestone
2,4-D
Tecoma
Axial XL
TopNotch
AAtrex
Fusilade DX
Puma
Valor
FirstRate
PowerFlex HL
–––––
Starane
Dual Magnum
Callisto
glyphosate
14
27
27
5
15
27
27
HARNESS XTRA
HORNET
HUSKIE
15
2
HUSKIE COMPLETE
2
2
2
14
4
INSTIGATE
KEYSTONE NXT
(Keystone LA NXT)
2
2
KOCHIAVORE
2
2
2
LEADOFF
2
15
LEXAR EZ
14
5
15
LUMAX EZ
14
15
14
27
15
14
2
MARVEL
OBEY
OPTILL
14
15
OPTILL PRO
14
2
14
5
14
2
2
2
1
4
15
ORION
PANOFLEX
PERMIT PLUS
PREFIX
PREQUEL
5
2
PROGRESS
2
5
5
15
5
15
5
14
12
15
5
15
14
PULSAR
QUELEX
RAVE
RAZE
REALM Q
REBELEX
14
4
RESICORE
6
4
27
9
27
5
2
5
2
2
2
27
4
4
6
15
5
4
2
4
4
4
4
2
27
4
4
4
4
15
5
RESOLVE Q
REVULIN Q
RIMFIRE MAX
ROUNDUP XTEND*
ROWEL FX
SENTRALLAS
SEQUENCE
SOLSTICE
SONIC
SPARTAN CHARGE
STANZA
STARANE FLEX
STARANE NXT
STATUS
STEADFAST Q
STORM
4
27
SUPREMACY
2
2
14
SUPREND
4
9
SURESTART II
2
2
14
2
2
14
15
SURVEIL
SYNCHRONY
TALINOR
5
9
TRAVALLAS
2
9
15
TRIPLEFLEX II
5
9
14
TRIVENCE
15
14
15
2
2
2
2
2
14
9
4
4
1
1
15
5
VALOR XLT
VARISTO
VELPAR ALFAMAX
VERDICT
WARRANT ULTRA
WELD
(FULL DECK)
WIDEMATCH
1
1
WOLVERINE
14
2
2
2
4
YUKON
ZEMAX
15
27
9
ZIDUA PRO
ACTIVE
INGREDIENT
TRADE
NAME®
acetochlor
atrazine
clopyralid
flumetsulam
pyrasulfotole
bromoxynil
pyrasulfotole
bromoxynil
thiencarbazone
rimsulfuron
mesotrione
acetochlor
atrazine
2,4-D
fluroxypyr
bromoxynil
rimsulfuron
thifensulfuron
mesotrione
s-metolachlor
atrazine
mesotrione
s-metolachlor
atrazine
fluthiacet
fomesafen
clomazone
quinclorac
saflufenacil
imazethapyr
saflufenacil
imazethapyr
dimethenamid-P
florasulam
MCPA
thifensulfuron
tribenuron
thifensulfuron
halosulfuron
s-metolachlor
fomesafen
rimsulfuron
isoxaflutole
desmedipham
phenmedipham
ethofumesate
dicamba
fluroxypyr
halauxifen
florasulam
triasulfuron
dicamba
flucarbazone
fluroxypyr
rimsulfuron
mesotrione
cyhalofop
penoxsulam
clopyralid
acetochlor
mesotrione
rimsulfuron
thifensulfuron
nicosulfuron
mesotrione
propoxycarbazone
mesosulfuron
dicamba
glyphosate
flumioxazin
chlorimuron
thifensulfuron
fluroxypyr
s-metolachlor
glyphosate
mesotrione
fluthiacet
sulfentrazone
cloransulam
sulfentrazone
carfentrazone
clopyralid
flumetsulam
florasulam
fluroxypyr
fluroxypyr
bromoxynil
diflufenzopyr
dicamba
nicosulfuron
rimsulfuron
bentazon
acifluorfen
fluroxypyr
thifensulfuron
tribenuron
prometryn
trifloxysulfuron
acetochlor
clopyralid
flumetsulam
flumioxazin
cloransulam
chlorimuron
thifensulfuron
bromoxynil
bicyclopyrone
metsulfuron
thifensulfuron
fluroxypyr
acetochlor
clopyralid
flumetsulam
chlorimuron
flumioxazin
metribuzin
flumioxazin
chlorimuron
imazamox
bentazon
hexazinone
diuron
saflufenacil
dimethenamid-P
fomesafen
acetochlor
MCPA
fluroxypyr
clopyralid
clopyralid
fluroxypyr
fenoxaprop
pyrasulfotole
bromoxynil
dicamba
halosulfuron
mesotrione
s-metolachlor
imazethypyr
saflufenacil
pyroxasulfone
Harness
AAtrex
Stinger
Python
–––––
Buctril
–––––
Buctril
Varro
Resolve, Matrix
Callisto
Surpass NXT
AAtrex
2,4-D, others
Starane
Buctril, others
Resolve
Harmony
Callisto
Dual II Magnum
AAtrex
Callisto
Dual II Magnum
AAtrex
Cadet
Flexstar
Command
Facet
Sharpen
Pursuit
Sharpen
Pursuit
Outlook
–––––
MCPA
Harmony
Express
Harmony
Permit
Dual Magnum
Reflex
Resolve
Balance
Betenex
–––––
Nortron
Clarity
Starane
Arylex
–––––
Amber
Clarity
Everest
Starane
Resolve
Callisto
Clincher
Grasp
Stinger
Surpass NXT
Callisto
Resolve
Harmony
Accent Q
Callisto
Olympus
Osprey
XtendiMax
glyphosate
Valor
Classic
Harmony
Starane
Dual Magnum
glyphosate
Callisto
Cadet
Spartan
FirstRate
Spartan
Aim
Stinger
Python
–––––
Starane
Starane
Buctril
–––––
Clarity
Accent Q
Resolve
Basagran
Ultra Blazer
Starane
Harmony
Express
Caparol
Envoke
Surpass NXT
Stinger
Python
Valor
FirstRate
Classic
Harmony
Buctril
–––––
Ally
Harmony
Starane
Harness
Stinger
Python
Classic
Valor
Metribuzin
Valor
Classic
Raptor
Basagran
Velpar
Karmex
Sharpen
Outlook
Reflex
Warrant
MCPA
Starane
Stinger
Stinger
Starane
Tecoma
----Buctril
Banvel
Permit
Callisto
Dual II Magnum
Pursuit
Sharpen
Zidua
*Indicates product is not registered for use at the time of printing.
Check for a label and Material Safety Data Sheet at www.cdms.net to confirm status. This chart contains some Restricted Use Pesticides (RUPs), always consult label prior to use.
Technical editing for this publication was led by Christy Sprague, Ph.D., Michigan State University, in partnership with other universities in the soybean-growing regions of the United States.
This chart was developed with funding from the soy checkoff.
The United Soybean Board and all Take Action partners, including the companies mentioned to the left, neither recommend nor discourage the implementation of any advice contained herein,
and are not liable for the use or misuse of the information provided.
©2017 United Soybean Board. Updated Jan. 1, 2017
15
5
4
2
27
6
27
6
2
2
27
15
5
4
4
6
2
2
27
15
5
27
15
5
14
14
13
4
14
2
14
2
15
2
4
2
2
2
2
15
14
2
27
5
5
16
4
4
4
2
2
4
2
4
2
27
1
2
4
15
27
2
2
2
27
2
2
4
9
14
2
2
4
15
9
27
14
14
2
14
14
4
2
2
4
4
6
19
4
2
2
6
14
4
2
2
5
2
15
4
2
14
2
2
2
6
27
2
2
4
15
4
2
2
14
5
14
2
2
6
5
7
14
15
14
15
4
4
4
4
4
1
27
6
4
2
27
15
2
14
15