INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Hairy Fleabane Globally
(Conyza bonariensis)
Herbicide Resistant Hairy Fleabane Globally
(Conyza bonariensis)
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Herbicide Resistant Hairy Fleabane Globally
(Conyza bonariensis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ArgentinaArgentina 2012 Soybean glyphosate 48 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane17100
2 Australia (New South Wales ) AustraliaNew South Wales 2010 Industrial sites, and Roadsides glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5512
3 Australia (Queensland) AustraliaQueensland2011 Roadsides glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5604
4 Australia (South Australia) AustraliaSouth Australia2011 Roadsides glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5605
5 Australia (New South Wales ) AustraliaNew South Wales 2016 Grapes paraquat 1 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		60Conyza bonariensisHairy Fleabane13045
6 BrazilBrazil 2005 Corn (maize), Fruit, Soybean, and Wheat glyphosate 5 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5264
7 ColombiaColombia 2006 Coffee glyphosate 10 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5295
8 EgyptEgypt 1989 Unspecified paraquat 15 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		60Conyza bonariensisHairy Fleabane383
9 GreeceGreece 2010 Grapes, Olive, and Orchards glyphosate 19 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5590
10 IsraelIsrael 1993 Forests, and Industrial sites atrazine, and simazine 23 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		60Conyza bonariensisHairy Fleabane102
11 IsraelIsrael 1993 Forests, and Industrial sites chlorsulfuron 23 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		60Conyza bonariensisHairy Fleabane103
12 IsraelIsrael 2005 Roadsides glyphosate 23 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5464
13 JapanJapan 1989 Roadsides diquat, and paraquat 25 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		60Conyza bonariensisHairy Fleabane128
14 JordanJordan 2022 Palm oil oxadiazon, oxyfluorfen, and paraquat 55 Multiple Resistance: 2 Sites of Action
PS I Electron Diversion HRAC Group 22 (Legacy D)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
 		60Conyza bonariensisHairy Fleabane27269
15 PortugalPortugal 2010 Orchards glyphosate 34 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5539
16 South AfricaSouth Africa 2003 Grapes, and Orchards paraquat 37 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		60Conyza bonariensisHairy Fleabane5191
17 South AfricaSouth Africa 2003 Grapes, and Orchards glyphosate 37 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5192
18 SpainSpain 1987 Orchards simazine 38 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		60Conyza bonariensisHairy Fleabane181
19 SpainSpain 2004 Orchards glyphosate 38 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5223
20 SwitzerlandSwitzerland 2020 Grapes glyphosate 41 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane24247
21 United States (California) United StatesCalifornia2007 Roadsides glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5310
22 United States (California) United StatesCalifornia2009 Corn (maize), Grapes, Orchards, and Roadsides glyphosate, and paraquat 45 Multiple Resistance: 2 Sites of Action
PS I Electron Diversion HRAC Group 22 (Legacy D)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane5390
23 United States (Oregon) United StatesOregon2023 Fallow, and Wheat glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Conyza bonariensisHairy Fleabane27285
24 UruguayUruguay 2022 Corn (maize), and Soybean chlorimuron-ethyl, diclosulam, and glyphosate 73 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)
 		60Conyza bonariensisHairy Fleabane27291
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