INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Downy Brome (Cheatgrass) Globally
(Bromus tectorum)
Herbicide Resistant Downy Brome (Cheatgrass) Globally
(Bromus tectorum)
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Herbicide Resistant Downy Brome (Cheatgrass) Globally
(Bromus tectorum)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Canada (Alberta) CanadaAlberta2021 Canola glyphosate 7 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
40Bromus tectorumDowny Brome (Cheatgrass)21234
2 FranceFrance 1981 Corn (maize) atrazine 17 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
40Bromus tectorumDowny Brome (Cheatgrass)457
3 SpainSpain 1990 Wheat chlorotoluron 38 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
40Bromus tectorumDowny Brome (Cheatgrass)190
4 SpainSpain 1990 Orchards simazine 38 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
40Bromus tectorumDowny Brome (Cheatgrass)191
5 United States (Oregon) United StatesOregon1997 Kentucky bluegrass imazamox, primisulfuron-methyl, and sulfosulfuron 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
40Bromus tectorumDowny Brome (Cheatgrass)1112
6 United States (Oregon) United StatesOregon2005 Grass seed clethodim, fluazifop-butyl, quizalofop-ethyl, and sethoxydim 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
40Bromus tectorumDowny Brome (Cheatgrass)5375
7 United States (Montana) United StatesMontana2016 Wheat imazamox, procarbazone-Na, and pyroxsulam 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
40Bromus tectorumDowny Brome (Cheatgrass)15071

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