International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
BARNYARDGRASS (Echinochloa crus-galli var. crus-galli)

with GROUP B/2 resistance: (ALS INHIBITORS)
Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)
MUTATION: ALANINE 122 to VALINE







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Chemical FamilyExample HerbicideResistance Level
ImidazolinonesImazethapyr Resistant > 10 fold
PyrimidinylthiobenzoatesBispyribac-Na Susceptible
SulfonylureasChlorsulfuron Not Determined
TriazolopyrimidinesChloransulam-methyl Susceptible
SulfonylaminocarbonyltriazolinoneFlucarbazone-Na Not Determined

NOTE
There is evidence (see Riar et al. 2013) that the biotype with this mutation also possesses another resistance mechanisms.

REFERENCES

This case was entered by Patrick Tranel Email: tranel@illinois.edu
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Monday, August 21, 2017 .  Available  www.weedscience.org
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