INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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select
Herbicide Resistant Hairy Beggarticks Globally
(Bidens pilosa)
Herbicide Resistant Hairy Beggarticks Globally
(Bidens pilosa)
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Herbicide Resistant Hairy Beggarticks Globally
(Bidens pilosa)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 1993 Soybean chlorimuron-ethyl, imazaquin, imazethapyr, nicosulfuron, and pyrithiobac-sodium 5 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		32Bidens pilosaHairy Beggarticks42
2 BrazilBrazil 2016 Corn (maize), and Soybean atrazine, and imazethapyr 5 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		32Bidens pilosaHairy Beggarticks14053
3 BrazilBrazil 2022 Soybean fomesafen 5 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
 		32Bidens pilosaHairy Beggarticks27288
4 KenyaKenya 1991 Coffee paraquat 26 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		32Bidens pilosaHairy Beggarticks381
5 MexicoMexico 2014 Lime, and sour glyphosate 29 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		32Bidens pilosaHairy Beggarticks9923
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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