The World of Herbicides

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The World of Herbicides
According to HRAC classification on mode of action 2010
HERBICIDES AFFECTING: Light Processes Cell Metabolism Growth/Cell Division
C2
C3
C1 C Inhibition ofphotosynthesis at PS II
B Inhibition of ALS (branched)chain amino acid synth.)
K1
Inhibition of
microtubule assembly K2
Inhibition of
microtubule organisation
M Uncoupler (membrane disruption)
E Inhibition ofprotoporphyrinogen oxidase
D PS-I-electron diversion
F Inhibition of pigmentsynthesis (bleaching)
N Lipid synthesis inhibition(not ACCase)
A Lipid synthesis inhibition(inhibition of ACCase)
K3
Inhibition of cell division
(inhibition of VLCFAs)
L Inhibition ofcellulose synthesis
F1 Inhibition of PDS 
F4
Inhibition of 
DOXP synthase
F3 Unknown target 
F2 Inhibition of4-HPPD
 
I DHP-inhibition 
Z Unknown modeof action
O Synthetic Auxins
 
P Auxin transportinhibition
H Glutamine synthetase inhibition
 
G Inhibition ofEPSP synthase
 
Phenyl-pyridazines
Diphenyl ethers
Thiadiazoles
Diphenylether
Pyrimidinediones
Cyclohexanediones (DIMs)
Chlorocarb. acids
Others
Glycines
Others
Others
Ureas
Uracils
Amides
Triazolinone
Triazines
Phenylpyrazoles
Imidazolinones
Triazolopyrimidines
Chloroacetamides
Pyridine-carboxylic acids
Benzoic acids
Phenoxy-carboxylic acids
Tetrazolinones
Acetamides
Semicarbazone
Phthalamate
Benzamide
Alkylazines
Nitriles
Pyridines
Phosphoroamidates
Dinitrophenols
Bipyridyliums
Phosphorodithioate
Benzofuranes
Quinolinecarboxylic acids
Phosphinic acids
Carbamate
Sulfonylamino-carbonyl
-triazolinones
Sulfonylureas
Pyrimidinyl (thio) benzoates
Oxadiazoles
Triazinones
Triazolinones
Pyridazinone
Nitriles
Phenylcarbamates
N-Phenyl-phthalimides
Oxazolidinedione
Benzothiadiazinone
Benzoic acid
Carbamates
Dinitroanilines
Benzamides
Oxyacetamides
Aryloxyphenoxy-
propionates (FOPs)
www.hracglobal.com
Thiocarbamates
Phenylpyrazoline (DEN)
Arylaminopropionic acid
Triazolocarboxamide
O
O
N
H
Cl
Cl
Clomeprop
O
OH
O
Cl
Cl
Dichlorprop=2,4-DP
O
OH
O
Cl
Cl
2,4-D
O
OH
OCl
MCPA
O
Cl
Cl
OH
O
2,4-DB
OCl
OH
O
MCPB
OCl
OH
O
Mecoprop = MCPP = CMPP
FF
N
N
N
O
NH2
Cl
O
F
F
F
Flupoxam
NCl
Cl Cl
O
OH
O
Triclopyr
NCl
Cl
O
OH
Clopyralid
NF
Cl Cl
O
OH
O
NH2
Fluroxypyr
NCl
Cl Cl
NH2
O
OH
Picloram
NCl
Cl
NH2
O
OH
Aminopyralid
N
H
NO
O
O
O
Isoxaben
Cl
Cl NH2
OHO
Chloramben
OHO
O
Cl
Cl
Dicamba
OHO
Cl
Cl
Cl
TBA
Cl Cl
CN
Dichlobenil
Cl Cl
SNH2
Chlorthiamid
N
H
O
OH
O
Naptalam
N
OOH
Cl
Quinmerac
N
Cl
OOH
Cl
Quinclorac
O
O
N
NN
H
N
H
O
F
F
Na
Diflufenzopyr-sodium
N
S
O
Cl
O
O
Benazolin-ethyl
+
N
N
N
NH2
F
N
H
O
Triaziflam
Indaziflam
N N
N
NH2
F
CH3
CH3
N
H CH3
N
N
N
NH N
H
S
Desmetryne N
N
N
Cl
N
H
N
H
Propazine
N
N
N
NH
N
H
S
Ametryne
N
N
N
N
H
N
H
Cl
Atrazine
N
N
N
NH
S N
H
Dimethametryn
N
N
N
N
H
N
H
Cl
Simazine
N
N
N
N
H
N
H
Cl
Terbuthylazine
N
N
N
N
H
N
H
S
Terbutryne
N
N
N
N
H
N
H
S
SimetryneN
N
N
N
H
N
H
O
PrometonN
N
N
N
H
N
H
Cl
CN
Cyanazine N
N
N
N
H
N
H
S
Prometryne N
N
N
N
H
N
H
O
Terbumeton
N
N
N
N NH
Cl
Trietazine
N
H
N
O
Fenuron
S
N
N
N
HO
Methabenzthiazuron
N
H
Cl
N
O
Chlorotoluron
N
H
O
N
O
Cl
Chloroxuron
N
H
N
O
F
F
F
Fluometuron (also F3)
Cl
Cl
N
H
N
O
Neburon
N
H
N
Cl
N
O
O
N
O
Dimefuron
N
H
N
O
Isoproturon O
Cl
N
H
O
N
Metoxuron
N
H
N
H
O
Siduron
N
H
Cl
Cl
N
O
Diuron
N
O
N
H N
O
Isouron
Cl
N
H
N
O
O
Monolinuron
N N
S N
O
N
H
Tebuthiuron
Br
Cl
N
H
N
O
O
Chlorobromuron
S
NN
NS
O
O
N
H
O
Ethidimuron
Cl
Cl
N
H
N
O O
Linuron
N
S
N
H
O
O
O
Bentazone
N
N
H
O
Br
O
Bromacil
N
N
H
O
O
Lenacil
N
N
H
O
Cl
O
Terbacil
N
H
O
N
H
O
O
O
Phenmedipham
N
NCl
O
O
S
Pyridate
N N
OH
Cl
Pyridafol
N
N
OCl
NH2
Chloridazon/Pyrazon
N N
NN
O
O
Hexazinone
N
NN
O NH2
Metamitron
N N
N
O
NH2
S
Metribuzin
N
N
N
O
NH2
O
N
H
Amicarbazone
N
+
N
+
Br Br
N
+
N
+
Cl Cl
Diquat
Paraquat
Cl
Cl
N
H
O
Propanil
Cl
N
H
O
Pentanochlor
Br
OH
Br
N O
NO2
O2N
Bromofenoxim (also M)
I
OH
I
CN
Ioxynil (also M)
Br
OH
Br
CN
Bromoxynil (also M)
O
N
HO
O
N
H
O
Desmedipham
Br
N
H
O
N
O
Metobromuron
O N
NH
O
F
F
F
F
Picolinafen
N
O
F
F
F
Fluridone
N
N
OCl
N
H
F
F
F
NorflurazonN
O
Cl
Cl
F
F
F
Flurochloridone
O
ClNH2
O2N
Aclonifen
N
H
N
O
F
F
F
Fluometuron
(also C)
NO
Cl
O
Clomazone
O
N
O
Cl
S
O
O
Isoxachlortole
N
N
OO Cl
Cl
O
Pyrazoxyfen
N
N
OOH S
F
F
F
O
O
Pyrasulfotole
O
O
O Cl
S
O
O
O O
Tefuryltrione
O
N
H
O
F
F
F
Flurtamone
ON
O
N
H
F F
F
F
F
Diflufenican
Beflubutamid
F
F F
F
O
O
N
H
Isoxaflutole
O
N
O
F
F
F
S
O
O
Benzofenap
N
N O O
O
Cl
Cl
Pyrazolynate
N
N O
S
O
O
Cl
Cl
O
Sulcotrione
ClOO
O
O
S
O O
Mesotrione
O O
O
N+
O O
S
O O
Benzobicyclon
S O Cl
S
O O
Tembotrione
O
O
O Cl
O
F
F
F
S
O O
Topramezone
O
N
N
OH
ON
S
OO
O
OH O
N
F
F
F
O
O
Bicyclopyrone
Amitrole 
(Inh. of lycopene cyclase)
N
H
N
N
NH
2
N
H
O
N
H
Dymron = Daimuron
N
H N
O
Methyldymron
N
H
N
H
OCl
Cumyluron
OH
O
Pelargonic acid
N N
S S
Dazomet
(CH2)7CO2H
(CH2)7CH3
Oleic Acid
O
N
Cl
Cl
O
Oxaziclomefone
NH
2
P
O
O
O
OH
Fosamine
Cl
Cl
N
H
O
OO
Etobenzanid
O
O
Cinmethylin
N NO
S
O
Pyributicarb
DSMA
As
O
O
O
Na+
Na+
MSMA
As
O
OH
O Na
+Metam
S
S
N
H
Na
+
Bromobutide
N
H
O
Br
Difenzoquat
Metilsulfate
N
N
+CH3SO
-
4
Indanofan
O
O
O
Cl
Chlorflurenol
OH OH
O
Cl
N
N
O
O
N
H
N
H
OS O
O
N
S O
O
Amidosulfuron
N
N
O
O
N
H
N
H
OS O
O
N N
N
NN
N
Azimsulfuron
N
N
O
O
N
H
N
H
OS O
O
O
O
Bensulfuron-methyl
N
N
O
N
H
N
H
OS O
O
O
O
Cl
Chlorimuron-ethyl
N
N
N
O
N
H
N
H
OS O
O
Cl
Chlorsulfuron
N
N
N
O
O
N
H
N
H
OS O
O
O
O
Cinosulfuron
N
N
O
O
N
H
N
OS O
O
N
O
F
F
F
Na+
Trifloxysulfuron-sodium
N
N
O
O
N
H
N
H
OS O
O
N
HO
Cyclosulfamuron
N
N
N
O
N
H
N
H
N
H
OS O
O
O
O
Ethametsulfuron-methyl
N
N
O
O
N
H
N
H
OS O
O
O
O
Ethoxysulfuron
N
N
O
O
N
H
N
H
OS O
O
N
F
F
F
Flazasulfuron
N
N
O
O
N
H
N
OS O
O
N
O
O
F
F
F
Na+
Flupyrsulfuron
-methyl-sodium
N
N
O
O
N
H
N
H
OS O
O
N N
Cl
OO
Halosulfuron-methyl
N
N
N
O
O
N
H
N
H
OS O
O
N
Cl
Imazosulfuron
N
N
N
O
N
H
N
OS O
O
I
O
O
Na+
Iodosulfuron
-methyl-sodium
N
N
N
O
N
H
N
H
OS O
O
O
O
Metsulfuron-methyl
N
N
O
O
N
H
N
H
OS O
O
N
H
O
N
O
H
Foramsulfuron
N
N
O
O
N
H
N
H
OS O
O
N
O
N
Nicosulfuron
N
N
N
H
N
H
OS O
O
O
OO
Oxasulfuron
N
N
O
O
N
H
N
H
OS O
O
O
F
F
F
F
O
Primisulfuron-methyl
N
N
N
O
N
H
N
H
OS O
O
F
F
F
Prosulfuron
N
N
O
O
N
H
N
H
OS O
O
O
O
N
H
S
O O
Mesosulfuron-methyl
N
N
O
O
N
H
N
H
OS O
O
N N
OO
Pyrazosulfuron-ethyl
N
N
O
O
N
H
N
H
OS O
O
N
S O
O
Rimsulfuron
N
N
N
H
N
H
OS O
O
O
O
Sulfometuron-methyl
N
N
O
O
N
H
N
H
OS O
O
N
N
S
O
O
Sulfosulfuron
N
N
N
O
N
H
N
H
OS O
O
F
F
F
F
F
F
Tritosulfuron
N
N
N
O
N
H
N
H
OS O
O
S
O
O
Thifensulfuron-methyl
N
N
N
O
N
H
N
H
OS O
O
O
Cl
Triasulfuron
N
N
N
O
N
N
H
OS O
O
O
O
Tribenuron-methyl
N
N
N
O
N
H
N
H
OS O
O
O
N
O
FF
F
Triflusulfuron-methyl
N
N
O
O
N
H
N
H
OS O
O
O
O
N
O
F
Flucetosulfuron
N
N
O
O
N
H
N
H
OS O
O
N
HN O
Orthosulfamuron
N
H
N
O
N
OOH
Imazapic
N
H
N
O
N
OOH
Imazapyr
N
H
N
O
OO
N
H
N
O
OO
+
Imazamethabenz-methyl
N
H
N
O
N
OOH
Imazaquin
N
H
N
O
N
OOH
O
Imazamox
N
H
N
O
N
OOH
Imazethapyr
OH
NO2
NO2
DNOC
OH
NO2
NO2
Dinoterb
OH
NO2
NO2
Dinoseb
O ON
N N
N
O
O
O
O
O O Na
+
Bispyribac-sodium
O ON
N N
N
O
O
O
O
O O
N
Pyribenzoxim
S
N
N
O
O
O O
Cl
Na+
Pyrithiobac-sodium
S
N
N
O
O
O OPyriftalid
O
N
N
O
O
O O
N
O
Pyriminobac-methyl
NH
N
N
O
O
OH
O
S
OO
F
F
Pyrimisulfan
S NO
O
O
N
N
N
O
O
O
O
Na+
O S NO
O
O
N
N
N
O
O
F
F
F
Na+
Flucarbazone-sodium
Propoxycarbazone-sodium
S
S N
H
N
O
N
N
O
O
O
O
O O
Thiencarbazone-methyl
N
N
NN
S
N
H
Cl
O
O
O
O
F
O
Cloransulam-methyl
N
N
NN
S
N
H
Cl
Cl
O
O
F
O
Diclosulam
N
N
NN
S
N
H
F
F
O
O
O
F
Florasulam
N N
NN
S
N
H
F
F
O
O
Flumetsulam
N N
NN
S
N
H
Cl
Cl
O
O
O
O
Metosulam
N
N
NN
N
H
S
O
O
O
O
O
F
F
F
F
F
Penoxsulam
N N
NN
N
H
S
N
O
O
O
O O
F
F
F
Pyroxsulam
OH
P N
H
OH
O O
OH
Glyphosate
OH
P N
H
OH
O O
O
(CH3)3 S+
Sulfosate
P
OH
O
O
NH2
O
NH4
+
Glufosinate-ammonium
NH2 S
N
H
O
O
O
O
Asulam
Propyrisulfuron
N
N
S N
H
N
HO
N
NN
Cl O
OO
O
Bialaphos
CH3 P
O
OH NH2
H
N
H
O CH3
H
N
H
O
CH3
H O
OH
S
N
H
S
P
O O
S
OO
Bensulide
S N
O
Tiocarbazil
S N
O
Cl
Thiobencarb = Benthiocarb
S N
O
Esprocarb
S N
O
Cycloate S N
O
EPTCNS
O
Dimepiperate
N S
O
Molinate
S N
OCl
Orbencarb
S N
O
Pebulate
S N
O
Prosulfocarb
S N
O
Vernolate
S N
O
Cl
Cl
Cl
Tri-allate
OH
O
Cl
Cl Cl
TCA
OH
O
ClCl
Dalapon
OH
O
FF
F
F
Flupropanate
O
O
O O
N
O
Alloxydim
O
O
O
N O
Butroxydim
Clethodim
O
OS
N O Cl Cycloxydim
O
O
N
O
S
Sethoxydim
O
O
N
O
S
Profoxydim
S
O
O
N O O
Cl
Tepraloxydim
O
O
O
N O Cl
Pinoxaden
O N
N
O
O
O
Tralkoxydim
O
O
N
O
Cyhalofop-butyl
O
F
N O
O
O
CH3
H
Diclofop-methyl
Cl Cl
O
O
O
O
Fluazifop-P-butyl
N
F
F
F
O
O
O
O
CH3
H
Fenoxaprop-P-ethyl
Cl O
N O
O
O
O
CH3H
Metamifop
O
N
Cl
O
O
O
N
FCH3
Haloxyfop-P-methyl
N
F
F
F Cl
O
O
O
O
CH3
Propaquizafop
N
N
O
Cl O
CH3
O
OO
N
Quizalofop-P-methyl
N
N
O
Cl O O
O
CH3
Quizalofop-P-tefuryl
N
N
O
Cl O
O
CH3OO
Ethofumesate
O
O
O
S
O OBenfuresate
O
OS
O O
Butylate
S N
O
Clodinafop-propargyl
N
Cl F
O
O
O
O
CH3
N
Cl
O
Cl
N
O
O
Oxadiazon
O
Cl
Cl
N
ON
O
Oxadiargyl
N
N
O
O
O
O
O
O
F
F
F
Benzfendizone
Cl
O N
F
O
O
O
Pentoxazone
N
N
F
H O
O
F
Cl
N
H
S
Cl
O
O
Profluazol
N
N O
F
O
Cl
O
O
F
F
F
Flufenpyr-ethyl
S
N
N
N
O
N
O
F
Thidiazimin
N
ClF
O
Cl
ON
N
O
F
F
Carfentrazone-ethyl
N
N
N
O Cl
Cl
O
Azafenidin N
Cl
O
O
Cl
O
O
Cinidon-ethyl N
O
Cl
O
O
F
O
O
Flumiclorac-pentyl
N
O
O
F
N
O
O
Flumioxazin
O
Cl
F
F
F
OO
N+
O
ONa+
Acifluorfen-sodium
O
Cl
Cl
OO
N
+
O
O
Bifenox
O
Cl
F
F
F
N
+
O
O
OO
O
O
Fluoroglycofen-ethyl
O
Cl
Cl
O
N
+
O
O
Chlomethoxyfen
O
F
F
F
O
N+
O
O
N
H
S
O O
Cl
Fomesafen
O
F
F
F
F Cl
N
H
O
S
O O
N+ O
O
Halosafen
O
Cl
F
F
F
N
+
O
O
OO
O
O
Lactofen
O
Cl
F
F
F
O
N
+ O
O
Oxyfluorfen
O
F
F
F Cl
O
O CH3
H
O
OCl
Ethoxyfen-ethyl
N
N
O
O
F
F
F
Cl
O
O
O
O
Butafenacil
NN
N
N
Cl
CN
N
Pyraclonil
N
F
Cl
S
O
O
N
N
S
O
Fluthiacet-methyl
ClCl
N
N
NN
H
S
O
O
O
F
F
Sulfentrazone
N N
FCl
O
O
F
F
F
Br
Fluazolate
N N
FCl
O
O
Cl
F
FO
O
Pyraflufen-ethyl
Bencarbazone
N
N
N
O
F
FF
F
NH
NH2
S
S
O
O
Saflufenacil
N
N
O
OF
F
F
F Cl
O
N
H
S N
O O
N
O Cl
O
Acetochlor
N
O Cl
O
Alachlor
N
O Cl
Propachlor
N
O Cl
O
Butachlor
N
O Cl
O
Dimethachlor
N
O Cl
S
O
Thenylchlor
S
N
O
Cl
O
Dimethenamid
N
O Cl
N
N
Metazachlor
N
O Cl
O
Metolachlor
N
O Cl
O
Pretilachlor N
O Cl
O
Propisochlor
N
O
Cl
O
Pethoxamid
Cl Cl
ClCl
O
OO
O
Chlorthal-dimethyl = DCPA
N
NO2
NO2
SNH2
O
O
N
NO2
NO2
F
F
F
Ethalfluralin
N
H
NO2
NO2
Pendimethalin
N
H
NO2
NO2
Butralin
Oryzalin N
NO2
NO2
F
F
F
Trifluralin
N
NO2
NO2
F
F
F
NH2
Dinitramine
N
H
O
O
Cl
Chlorpropham N
H
O
O
Propham
N
NO2
NO2
F
F
F
Benefin = Benfluralin
S
P
N
H
O
O
NO2
S
P
N
H
O
O
NO2
Amiprofos-methyl
Butamifos
N
H
O
Cl
Cl
Propyzamide = Pronamide
N
O
Tebutam
P
S
OS
O
N
O
Cl
Anilofos
N P
S
OS
O
O
Piperophos
S
O O
N
N
N
N
O
Cafenstrole
O
N
H
O
Naproanilide
N
O
Diphenamid
N
S
O
S
O
F
F
F F
F
Dithiopyr
N
O
O
F
F
F F
F
S
N
Thiazopyr
O
N
NN
S
O F
F
F
F
Flufenacet
O
N
N
S
O
Mefenacet
N N
NN N
OO
Cl
Fentrazamide
Carbetamide
N
H
O
O
N
H
O
H
Napropamide
O
O
N
SN
N
ON
OO
O
FF
FF
F
Pyroxasulfone
Ipfencarbazone
F
F
N
O
O
N N
N
CI CI
Flamprop-m
N
Cl
F
C H3O
H
O
O H
A (1) Lipid synthesis inhibition (inh. of ACCase)
B (2) Inhibition of ALS (branched chain 
amino acid synthesis)
C (5, 6, 7) Inhibition of photosynthesis PS II
D (22) PS I electron diversion
E (14) Inhibition of protoporphyrinogen oxidase
F Inhibition of pigment synthesis (bleaching)
F1 (12) Inhibition of PDS
F2 (27) Inhibition of 4-HPPD
F3 (11, 13) Unknown target
F4 Inhibition of DOXP synthase
G (9) Inhibition of EPSP synthase
H (10) Inhibiton of glutamine synthetase
I (18) Inhibition of DHP
K1 (3) Inhibition of microtubule assembly
K2 (23) Inhibition of microtubule organisation
K3 (15) Inhibition of cell division (VLCFA)
L (20, 21) Inhibition of cellulose synthesis
M (24) Uncoupler of oxidative phosphorylation
N (8, 26) Inhibition of lipid synthesis (not ACCase)
O (4) Synthetic auxin
P (19) Auxin transport inhibition
Z (17, 25,) Unknown mode of action 
( ) WSSA Group 
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