INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Herbicide Resistant Greater Beggarticks Globally
(Bidens subalternans)
Herbicide Resistant Greater Beggarticks Globally
(Bidens subalternans)
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Herbicide Resistant Greater Beggarticks Globally
(Bidens subalternans)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 1996 Soybean chlorimuron-ethyl, imazethapyr, and nicosulfuron 5 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		194Bidens subalternansGreater Beggarticks1195
2 BrazilBrazil 2006 Corn (maize) atrazine, foramsulfuron, and iodosulfuron-methyl-Na 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)
 		194Bidens subalternansGreater Beggarticks5382
3 BrazilBrazil 2023 Corn (maize), and Soybean glyphosate 5 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		194Bidens subalternansGreater Beggarticks26263
4 ParaguayParaguay 2018 Soybean glyphosate 46 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		194Bidens subalternansGreater Beggarticks17150
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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