INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Hood Canarygrass Globally
(Phalaris paradoxa)
Herbicide Resistant Hood Canarygrass Globally
(Phalaris paradoxa)
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Herbicide Resistant Hood Canarygrass Globally
(Phalaris paradoxa)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (New South Wales ) AustraliaNew South Wales 1997 Wheat, and Winter pulses fenoxaprop-ethyl, and sethoxydim 1 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		128Phalaris paradoxaHood Canarygrass1137
2 Australia (New South Wales ) AustraliaNew South Wales 2012 Spring Barley, and Wheat clodinafop-propargyl, and mesosulfuron-methyl 1 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)
 		128Phalaris paradoxaHood Canarygrass7840
3 IranIran 2007 Winter wheat diclofop-methyl 79 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		128Phalaris paradoxaHood Canarygrass5342
4 IsraelIsrael 1979 Railways, and Roadsides atrazine 23 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		128Phalaris paradoxaHood Canarygrass96
5 IsraelIsrael 2004 Peas, and Wheat clethodim, clodinafop-propargyl, cycloxydim, diclofop-methyl, fenoxaprop-ethyl, fluazifop-butyl, haloxyfop-methyl, and tralkoxydim 23 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		128Phalaris paradoxaHood Canarygrass5299
6 ItalyItaly 1998 Wheat clodinafop-propargyl, diclofop-methyl, pinoxaden, and sethoxydim 24 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		128Phalaris paradoxaHood Canarygrass5108
7 MexicoMexico 1996 Wheat clodinafop-propargyl, fenoxaprop-ethyl, pinoxaden, and tralkoxydim 29 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		128Phalaris paradoxaHood Canarygrass5479
8 SyriaSyria 2015 Faba beans, Potatoes, and Wheat clodinafop-propargyl, and fenoxaprop-ethyl 69 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		128Phalaris paradoxaHood Canarygrass15059
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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