INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Mayweed Chamomile Globally
(Anthemis cotula)
Herbicide Resistant Mayweed Chamomile Globally
(Anthemis cotula)
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Herbicide Resistant Mayweed Chamomile Globally
(Anthemis cotula)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ChileChile 2010 Wheat iodosulfuron-methyl-Na, metsulfuron-methyl, and pyroxsulam 8 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		19Anthemis cotulaMayweed Chamomile5584
2 United States (Idaho) United StatesIdaho1997 Canola, Cereals, Chickpea, Lentils, Peas, and Wheat chlorsulfuron, imazethapyr, thifensulfuron-methyl, and tribenuron-methyl 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		19Anthemis cotulaMayweed Chamomile524
3 United States (Washington) United StatesWashington2010 Spring Barley, and Wheat cloransulam-methyl, imazethapyr, thifensulfuron-methyl, and tribenuron-methyl 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		19Anthemis cotulaMayweed Chamomile10987
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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