INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE

PROSTRATE PIGWEED (Amaranthus blitoides)

with GROUP B/2 resistance: (INHIBITION OF ACETOLACTATE SYNTHASE )
Inhibition of Acetolactate Synthase
MUTATION: PROLINE 197 to SERINE







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Chemical FamilyExample HerbicideResistance Level
ImidazolinonesImazethapyr Susceptible
Pyrimidinyl benzoates Bispyribac-Na Intermediate Resistance < 10 fold
SulfonylureasChlorsulfuron Resistant > 10 fold
Triazolopyrimidine - Type 1 Chloransulam-methyl Intermediate Resistance < 10 fold
Triazolinones Flucarbazone-Na Not Determined

NOTE
With the exception of SU-resistance determination, cross resistance to the other classes was either not determined or determined from a single selective herbicide dose for a representative chemical of that class (and thus the level of resistance was not precisely determined).

REFERENCES

This case was entered by Terry Wright Email: trwright@dow.com

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Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Thursday, December 12, 2024 .  Available  www.weedscience.org Copyright © 1993- 2024 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.