INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Pennsylvania Smartweed Globally
(Polygonum pensylvanicum)
Herbicide Resistant Pennsylvania Smartweed Globally
(Polygonum pensylvanicum)
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Herbicide Resistant Pennsylvania Smartweed Globally
(Polygonum pensylvanicum)
#CountryFirstYearSituationActive IngredientsSite of Action
1 United States (Iowa) United StatesIowa1990 Corn (maize) atrazine 45 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
135Polygonum pensylvanicumPennsylvania Smartweed240
2 United States (Arkansas) United StatesArkansas2020 Rice bispyribac-sodium, halosulfuron-methyl, and prosulfuron 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
135Polygonum pensylvanicumPennsylvania Smartweed20230

HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Thursday, September 24, 2026.  Available at  www.weedscience.org

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