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Safety - page 25 • First aid - page 33 • Resistance management - page 41
Herbicides
Herbicide Group Classification by Mode of Action
Mode of Action
Chemical family
Active ingredients
Found in*
Group 10
Inhibitors of glutamine
synthetase.
None
glufosinate ammonium Liberty 150 SN
Group 11
These chemicals
inhibit the carotenoids
biosynthesis.
Triazole
amitrole
Amitrol 240
Group 14
Inhibits an enzyme of
chlorophyll and heme
biosynthesis
Aryl triazone
carfentrazone
Cleanstart, Aim, Authority Charge
sulfentrazone
Authority, Authority Charge
saflufenacil
Heat
flumioxazin
Payload
Group 15
Inhibitors of cell
growth and division.
Chloroacetamides
metolachlor
propyzamide
Dual II Magnum, Primextra II Magnum
Kerb 50W
Group 16
Unknown.
Benzofuranyl
alkylsulfonate
ethofumesate
Ethos SC, Nortron
Group 19
Auxin transport
inhibitor allowing
buildup in the
meristem area
Semicarbazone
diflufenzopyr
Distinct
Group 20
Inhibits actively
dividing merestems
in roots and shoots
as well as seed
gemination
Nitriles
dichlobenil
Casoron
Group 22
Cell membrane
disrupters. Chemicals
that disrupt the
internal cell membrane
and prevent the cells
from manufacturing
food.
Bipyridyliums
diquat
paraquat
Reglone Desiccant, Reward
Gramoxone
Group 27
Pyrazole
pyrasulfotole
Axial iPak, Infinity, Tundra, Velocity m3
Inhibits plant pigment
biosynthesis and
photosynthesis
*
A herbicide may appear in more than one group if it contains more than one active ingredient.