INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Narrowleaf Hawksbeard Globally
(Crepis tectorum)
Herbicide Resistant Narrowleaf Hawksbeard Globally
(Crepis tectorum)
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Herbicide Resistant Narrowleaf Hawksbeard Globally
(Crepis tectorum)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Canada (Alberta) CanadaAlberta2011 Grass seed metsulfuron-methyl 7 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		271Crepis tectorumNarrowleaf Hawksbeard5606
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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