Table 16.4 Main chemical families of herbicides and examples of widely used compounds
Amide
Metolachlor
N
H 3 C
CH 3
O
CH 3
Cl
O
CH 3
Anilide
Arylalanine
Sulfonanilide
Sulfonamide
Thioamide
Chlorthiamid
Cl
Cl
NH 2
S
Aromatic acid
Benzoic acid
2,3,6-TBA
Cl
Cl
Cl
OH
O
Picolinic acid
Picloram
N
OH
O
Cl
NH 2
Cl
Cl
Benzoyl cyclohexanedione
Sulcotrione
O
O
O
C l
S
O
O
CH 3
Benzothiazole
Methabenzthiazuron
N
S
N
CH 3
NH 2
O
CH 3
Carbamate
Dinitroaniline
Trifluralin
NO 2
NO 2
C
N
F
F
F
CH 2
CH 2
CH 2
CH 2
CH 3
CH 3
Dinitrophenol
DNOC
OH
NO 2
NO 2
O 2 N
Diphenyl ether
Halogenated aliphatic acid
TCA
Cl
Cl Cl
OH
O
Dithiocarbamate
Imidazolinone
Nitrile
Ioxynil
I
HO
I
C
N
Organophosphonates
Glyphosate
HO
O
N
H
P
OH
OH
O
Oxadiazolone
Phenoxyalcanoic acid
2,4-D
O
Cl
Cl
OH
O
Pyrazole
Pyridazine
Pyridazinone
Pyridine
Triclopyr
N
O
Cl
Cl
Cl
O
OH
Pyrimidinediamine
Quaternary ammonium
Diquat
N
+
N
+
(continued)
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