INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Sumatran Fleabane Globally
(Conyza sumatrensis)
Herbicide Resistant Sumatran Fleabane Globally
(Conyza sumatrensis)
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Herbicide Resistant Sumatran Fleabane Globally
(Conyza sumatrensis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (Queensland) AustraliaQueensland2018 Fallow, and Wheat paraquat 1 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		65Conyza sumatrensisSumatran Fleabane17148
2 Australia (Queensland) AustraliaQueensland2018 Fallow glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane18161
3 BrazilBrazil 2010 Corn (maize), and Soybean glyphosate 5 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane5577
4 BrazilBrazil 2011 Soybean chlorimuron-ethyl 5 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		65Conyza sumatrensisSumatran Fleabane5647
5 BrazilBrazil 2011 Corn (maize), and Soybean chlorimuron-ethyl, and glyphosate 5 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane5648
6 BrazilBrazil 2016 Soybean paraquat 5 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		65Conyza sumatrensisSumatran Fleabane16082
7 BrazilBrazil 2017 Soybean saflufenacil 5 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
 		65Conyza sumatrensisSumatran Fleabane17099
8 BrazilBrazil 2017 Soybean chlorimuron-ethyl, glyphosate, and paraquat 5 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PS I Electron Diversion HRAC Group 22 (Legacy D)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane17102
9 BrazilBrazil 2017 Soybean 2,4-D, diuron, glyphosate, paraquat, and saflufenacil 5 Multiple Resistance: 5 Sites of Action
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
PS I Electron Diversion HRAC Group 22 (Legacy D)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
Auxin Mimics HRAC Group 4 (Legacy O)
 		65Conyza sumatrensisSumatran Fleabane17135
10 FranceFrance 2010 Grapes glyphosate 17 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane9932
11 FranceFrance 2016 Grapes flazasulfuron, iodosulfuron-methyl-Na, mesosulfuron-methyl, and penoxsulam 17 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		65Conyza sumatrensisSumatran Fleabane17114
12 FranceFrance 2016 Grapes flazasulfuron, glyphosate, iodosulfuron-methyl-Na, mesosulfuron-methyl, and penoxsulam 17 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane17115
13 GreeceGreece 2012 Grapes, Olive, and Orchards glyphosate 19 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane5691
14 JapanJapan 1986 Mulberry, Orchards, and Roadsides diquat, and paraquat 25 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		65Conyza sumatrensisSumatran Fleabane126
15 MalaysiaMalaysia 1990 Vegetables paraquat 28 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		65Conyza sumatrensisSumatran Fleabane138
16 ParaguayParaguay 2017 Soybean chlorimuron-ethyl, glyphosate, and paraquat 46 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PS I Electron Diversion HRAC Group 22 (Legacy D)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane18153
17 SpainSpain 2009 Orchards glyphosate 38 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane5481
18 Sri LankaSri Lanka 1998 Tea paraquat 39 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		65Conyza sumatrensisSumatran Fleabane1184
19 TaiwanTaiwan 1980 Cropland, Railways, and Roadsides paraquat 42 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		65Conyza sumatrensisSumatran Fleabane214
20 TurkeyTurkey 2019 Peaches glyphosate 71 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		65Conyza sumatrensisSumatran Fleabane18164
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