INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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select
Herbicide Resistant Tall Buttercup Globally
(Ranunculus acris)
Herbicide Resistant Tall Buttercup Globally
(Ranunculus acris)
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Herbicide Resistant Tall Buttercup Globally
(Ranunculus acris)
#CountryFirstYearSituationActive IngredientsSite of Action
1 New ZealandNew Zealand 1988 Pastures MCPA 30 Auxin Mimics HRAC Group 4 (Legacy O)
 		140Ranunculus acrisTall Buttercup159
2 New ZealandNew Zealand 2010 Pastures flumetsulam, and thifensulfuron-methyl 30 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		140Ranunculus acrisTall Buttercup5732
3 New ZealandNew Zealand 2010 Pastures flumetsulam, MCPA, and thifensulfuron-methyl 30 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Auxin Mimics HRAC Group 4 (Legacy O)
 		140Ranunculus acrisTall Buttercup14057
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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