INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Herbicide Resistant Rigid Brome Globally
(Bromus diandrus ssp. rigidus (=B. rigidus))
Herbicide Resistant Rigid Brome Globally
(Bromus diandrus ssp. rigidus (=B. rigidus))
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Herbicide Resistant Rigid Brome Globally
(Bromus diandrus ssp. rigidus (=B. rigidus))
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (Western Australia) AustraliaWestern Australia2005 Canola, and Lupins quizalofop-ethyl 1 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		38Bromus diandrus ssp. rigidus (=B. rigidus)Rigid Brome5253
2 Australia (South Australia) AustraliaSouth Australia2007 Beans clethodim, fluazifop-butyl, haloxyfop-methyl, quizalofop-ethyl, and tepraloxydim 1 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		38Bromus diandrus ssp. rigidus (=B. rigidus)Rigid Brome5298
3 Australia (Western Australia) AustraliaWestern Australia2011 Wheat mesosulfuron-methyl, and pyroxsulam 1 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		38Bromus diandrus ssp. rigidus (=B. rigidus)Rigid Brome5578
4 Australia (South Australia) AustraliaSouth Australia2011 Wheat mesosulfuron-methyl, and pyroxsulam 1 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		38Bromus diandrus ssp. rigidus (=B. rigidus)Rigid Brome5579
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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