INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Little seed Canary grass Globally
(Phalaris minor)
Herbicide Resistant Little seed Canary grass Globally
(Phalaris minor)
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Herbicide Resistant Little seed Canary grass Globally
(Phalaris minor)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (Victoria) AustraliaVictoria2012 Wheat clodinafop-propargyl 1 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass7838
2 IndiaIndia 1991 Wheat isoproturon 21 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		127Phalaris minorLittle seed Canary grass222
3 IndiaIndia 1994 Wheat diclofop-methyl, and pinoxaden 21 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass7815
4 IndiaIndia 2006 Wheat clodinafop-propargyl, fenoxaprop-ethyl, isoproturon, mesosulfuron-methyl, pinoxaden, pyroxsulam, and sulfosulfuron 21 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		127Phalaris minorLittle seed Canary grass5324
5 IndiaIndia 2013 Wheat iodosulfuron-methyl-Na, and mesosulfuron-methyl 21 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		127Phalaris minorLittle seed Canary grass7816
6 IranIran 2004 Winter wheat clodinafop-propargyl, diclofop-methyl, fenoxaprop-ethyl, pinoxaden, and tralkoxydim 79 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass5377
7 IsraelIsrael 1993 Wheat fenoxaprop-ethyl 23 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass111
8 MexicoMexico 1996 Wheat clodinafop-propargyl, fenoxaprop-ethyl, fluazifop-butyl, pinoxaden, sethoxydim, and tralkoxydim 29 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass478
9 PakistanPakistan 2015 Wheat fenoxaprop-ethyl 86 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass15074
10 South AfricaSouth Africa 1999 Pastures, and Wheat clodinafop-propargyl, diclofop-methyl, fenoxaprop-ethyl, haloxyfop-methyl, iodosulfuron-methyl-Na, mesosulfuron-methyl, propaquizafop, quizalofop-ethyl, and sulfosulfuron 37 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		127Phalaris minorLittle seed Canary grass5194
11 United States (California) United StatesCalifornia2001 Onions clethodim, fenoxaprop-ethyl, fluazifop-butyl, and sethoxydim 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		127Phalaris minorLittle seed Canary grass5163
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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