INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
Most Recent Cases of Herbicide Resistant Weeds Entered into the Database
(click on a column header to sort or click on a country for details)
#Date Last UpdatedSpeciesCountryFirst YearSite of Action
1 May 9, 2023Echinochloa oryzoidesArgentinaArgentina 201648 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		261Early Watergrass25261
2 May 9, 2023Poa annuaUnited States (Georgia) United StatesGeorgia202245 Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
 		130Annual Bluegrass25260
3 April 25, 2023Kochia scopariaCanada (Saskatchewan) CanadaSaskatchewan20217 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
 		101Kochia25259
4 April 24, 2023Bromus commutatusUnited KingdomUnited Kingdom 202044 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		357Meadow Brome25258
5 April 23, 2023Bromus sterilisUnited KingdomUnited Kingdom 202044 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		289Poverty Brome25257
6 April 23, 2023Bromus diandrusUnited KingdomUnited Kingdom 202044 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		197Ripgut Brome25256
7 March 28, 2023Amaranthus palmeriUnited States (Kansas) United StatesKansas202145 Multiple Resistance: 6 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
PSII inhibitors - Histidine 215 Binders HRAC Group 6 (Legacy C3)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		14Palmer Amaranth24257
8 March 15, 2023Amaranthus retroflexusUnited States (North Carolina) United StatesNorth Carolina202245 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
 		16Redroot Pigweed24259
9 March 15, 2023Amaranthus retroflexusUnited States (North Carolina) United StatesNorth Carolina202245 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		16Redroot Pigweed24258
10 March 15, 2023Amaranthus retroflexusUnited States (North Carolina) United StatesNorth Carolina202045 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
 		16Redroot Pigweed22235
11 March 8, 2023Cyperus esculentusItalyItaly 201724 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		290Yellow Nutsedge24256
12 February 16, 2023Stellaria mediaUnited States (California) United StatesCalifornia202245 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		168Common Chickweed24253
13 January 31, 2023Amaranthus palmeriUruguayUruguay 202273 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		14Palmer Amaranth24254
14 January 31, 2023Amaranthus hybridus (syn: quitensis)UruguayUruguay 202273 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		12Smooth Pigweed24255
15 December 20, 2022Lolium perenne ssp. multiflorumUnited States (North Carolina) United StatesNorth Carolina202245 Multiple Resistance: 4 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
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)
 		110Italian Ryegrass24251
16 December 4, 2022Amaranthus hybridus (syn: quitensis)ParaguayParaguay 202246 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)
 		12Smooth Pigweed24252
17 November 22, 2022Chenopodium albumUkraineUkraine 2022230 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		47Common Lambsquarters24250
18 November 3, 2022Alopecurus myosuroidesSwitzerlandSwitzerland 201941 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)
 		6Blackgrass20228
19 November 3, 2022Lolium perenne ssp. multiflorumSwitzerlandSwitzerland 202041 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)
 		110Italian Ryegrass24249
20 November 3, 2022Conyza canadensisSwitzerlandSwitzerland 202141 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		61Horseweed24248
21 November 3, 2022Conyza bonariensisSwitzerlandSwitzerland 202041 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		60Hairy Fleabane24247
22 October 24, 2022Panicum dichotomiflorumUnited States (Illinois) United StatesIllinois201945 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		122Fall Panicum24246
23 October 24, 2022Amaranthus tuberculatus (=A. rudis)UruguayUruguay 202273 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		219Tall Waterhemp24245
24 October 24, 2022Amaranthus palmeriUnited States (North Carolina) United StatesNorth Carolina202245 Inhibition of Glutamine Synthetase HRAC Group 10 (Legacy H)
 		14Palmer Amaranth24244
25 October 6, 2022Amaranthus powelliiCanada (Ontario) CanadaOntario20197 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Auxin Mimics HRAC Group 4 (Legacy O)
 		15Powell Amaranth24243
26 October 6, 2022Amaranthus tuberculatus (=A. rudis)Canada (Ontario) CanadaOntario20217 Multiple Resistance: 5 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		219Tall Waterhemp24242
27 July 26, 2022Amaranthus palmeriSouth AfricaSouth Africa 201837 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)
 		14Palmer Amaranth23244
28 July 11, 2022Amaranthus hybridus (syn: quitensis)ArgentinaArgentina 202148 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
 		12Smooth Pigweed23243
29 July 6, 2022Echinochloa crus-galli var. crus-galliViet NamViet Nam 201774 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
 		79Barnyardgrass23242
30 June 13, 2022Amaranthus palmeriUnited States (North Carolina) United StatesNorth Carolina202245 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		14Palmer Amaranth23241
31 June 12, 2022Anthriscus caucalisGermanyGermany 201718 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		356Bur Chervil23240
32 April 27, 2022Digitaria sanguinalisArgentinaArgentina 201948 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		77Large Crabgrass23239
33 April 8, 2022Raphanus raphanistrumAustralia (Western Australia) AustraliaWestern Australia20201 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
Auxin Mimics HRAC Group 4 (Legacy O)
 		141Wild Radish19219
34 March 18, 2022Sorghum halepenseUnited States (Missouri) United StatesMissouri201945 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Johnsongrass23238
35 March 14, 2022Cyperus difformisIndiaIndia 201721 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		71Smallflower Umbrella Sedge23236
36 March 11, 2022Poa annuaUnited States (Tennessee) United StatesTennessee201745 Multiple Resistance: 7 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
Inhibition of Glutamine Synthetase HRAC Group 10 (Legacy H)
Inhibition of Microtubule Assembly 2HRAC Group 3 (Legacy K1)
Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
 		130Annual Bluegrass23237
37 February 8, 2022Lolium perenne ssp. multiflorumCanada (Ontario) CanadaOntario20217 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		110Italian Ryegrass22236
38 December 14, 2021Lolium perenne ssp. multiflorumIrelandIreland 202181 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)
 		110Italian Ryegrass21237
39 December 14, 2021Alopecurus myosuroidesIrelandIreland 202181 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)
 		6Blackgrass21236
40 November 23, 2021Tripleurospermum perforatum (=T. inodorum)Czech RepublicCzech Republic 202112 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		116Scentless Chamomile21235
41 October 25, 2021Bromus tectorumCanada (Alberta) CanadaAlberta20217 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		40Downy Brome (Cheatgrass)21234
42 October 8, 2021Zea mays ssp. mexicanaFranceFrance 202017 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		354Mexican teosinte21231
43 October 8, 2021Ambrosia artemisiifoliaFranceFrance 201317 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		18Common Ragweed21230
44 September 27, 2021Aster squamatusMexicoMexico 202129 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		353Saltmarsh Aster21229
45 September 9, 2021Arabidopsis thalianaUnited States (Virginia) United StatesVirginia201545 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		292Mouse-ear Cress21232
46 August 30, 2021Amaranthus retroflexusUkraineUkraine 2020230 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		16Redroot Pigweed20231
47 August 30, 2021Polygonum pensylvanicumUnited States (Arkansas) United StatesArkansas202045 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		135Pennsylvania Smartweed20230
48 August 30, 2021Amaranthus palmeriUnited States (Arkansas) United StatesArkansas202045 Inhibition of Glutamine Synthetase HRAC Group 10 (Legacy H)
 		14Palmer Amaranth20229
49 August 16, 2021Digitaria insularisParaguayParaguay 202046 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		239Sourgrass20223
50 August 11, 2021Lolium perenne ssp. multiflorumSwitzerlandSwitzerland 201841 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)
 		110Italian Ryegrass20226
51 August 11, 2021Lolium perenne ssp. multiflorumSwitzerlandSwitzerland 201841 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		110Italian Ryegrass20227
52 August 11, 2021Sorghum halepenseSerbiaSerbia 2018245 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)
 		166Johnsongrass20225
53 August 11, 2021Ambrosia artemisiifoliaSerbiaSerbia 2019245 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		18Common Ragweed20224
54 July 11, 2021Leptochloa fusca spp. fasicularisUnited States (California) United StatesCalifornia202045 Inhibition of Microtubule Assembly HRAC Group 13 (Legacy F4)
 		355Bearded Sprangletop21233
55 May 5, 2021Chloris radiataColombiaColombia 201910 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)
 		340Radiate Fingergrass19224
56 May 3, 2021Raphanus raphanistrumAustralia (Western Australia) AustraliaWestern Australia20151 Multiple Resistance: 5 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Phytoene Desaturase inhibitorsHRAC Group 12 (Legacy F1)
Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
Auxin Mimics HRAC Group 4 (Legacy O)
 		141Wild Radish19223
57 April 29, 2021Amaranthus tuberculatus (=A. rudis)United States (North Carolina) United StatesNorth Carolina202045 Multiple Resistance: 5 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		219Tall Waterhemp19222
58 March 13, 2021Amaranthus palmeriUnited States (Tennessee) United StatesTennessee202045 Multiple Resistance: 2 Sites of Action
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
Auxin Mimics HRAC Group 4 (Legacy O)
 		14Palmer Amaranth19221
59 March 10, 2021Salsola tragusArgentinaArgentina 201948 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		147Russian-thistle19218
60 March 9, 2021Oryza sativa var. sylvaticaTurkeyTurkey 202071 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		242Red Rice19217
61 February 26, 2021Arctotheca calendulaAustralia (Western Australia) AustraliaWestern Australia20201 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Phytoene Desaturase inhibitorsHRAC Group 12 (Legacy F1)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		21Capeweed19216
62 February 23, 2021Rapistrum rugosumAustralia (New South Wales ) AustraliaNew South Wales 20211 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		142Turnipweed19215
63 February 23, 2021Echinochloa crus-galli var. crus-galliAustralia (New South Wales ) AustraliaNew South Wales 20211 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		79Barnyardgrass19214
64 February 4, 2021Euphorbia heterophyllaBrazilBrazil 20195 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		87Wild Poinsettia19213
65 February 4, 2021Digitaria insularisBrazilBrazil 20205 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		239Sourgrass19212
66 February 1, 2021Echinochloa crus-galli var. crus-galliBrazilBrazil 20205 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		79Barnyardgrass19211
67 January 25, 2021Bromus sterilisCzech RepublicCzech Republic 201712 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		289Poverty Brome18211
68 December 16, 2020Bromus rubensSpainSpain 201838 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		324Red Brome18210
69 November 26, 2020Bromus madritensisSpainSpain 201838 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		352Compact Brome18209
70 November 13, 2020Eleusine indicaItalyItaly 201924 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		81Goosegrass18208
71 October 20, 2020Amaranthus tuberculatus (=A. rudis)IsraelIsrael 201923 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		219Tall Waterhemp18207
72 October 7, 2020Amaranthus palmeriUnited States (Connecticut) United StatesConnecticut201945 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)
 		14Palmer Amaranth18206
73 October 7, 2020Xanthium strumariumKazakhstanKazakhstan 2015157 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		174Common cocklebur18205
74 October 1, 2020Apera spica-ventiBelgiumBelgium 20193 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Silky Windgrass18199
75 September 23, 2020Amaranthus palmeriSpainSpain 201638 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		14Palmer Amaranth18204
76 September 21, 2020Poa annuaNew ZealandNew Zealand 202030 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		130Annual Bluegrass18203
77 September 21, 2020Lolium perenne ssp. multiflorumNew ZealandNew Zealand 201430 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		110Italian Ryegrass18202
78 September 21, 2020Lolium perenneNew ZealandNew Zealand 201430 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		111Perennial Ryegrass18201
79 September 10, 2020Avena fatuaIrelandIreland 201981 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		28Wild Oat18200
80 July 3, 2020Conyza canadensisFranceFrance 201917 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		61Horseweed18198
81 June 22, 2020Eleusine indicaMexicoMexico 201629 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		81Goosegrass18194
82 June 22, 2020Chloris barbata = (C. inflate)MexicoMexico 201829 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		53Swollen Fingergrass18197
83 June 22, 2020Parthenium hysterophorusMexicoMexico 201729 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		124Ragweed Parthenium18196
84 June 22, 2020Amaranthus palmeriMexicoMexico 201629 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		14Palmer Amaranth18195
85 June 22, 2020Sorghum halepenseAustralia (Queensland) AustraliaQueensland20191 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Johnsongrass18193
86 June 22, 2020Hordeum murinum ssp. leporinumSpainSpain 201838 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		98Hare Barley18192
87 May 20, 2020Eleusine indicaUnited States (Alabama) United StatesAlabama201945 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		81Goosegrass18191
88 January 22, 2020Poa annuaAustralia (Victoria) AustraliaVictoria20171 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		130Annual Bluegrass18190
89 January 22, 2020Poa annuaAustralia (New South Wales ) AustraliaNew South Wales 20171 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		130Annual Bluegrass18189
90 January 22, 2020Avena fatuaAustralia (Queensland) AustraliaQueensland20181 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		28Wild Oat18187
91 November 28, 2019Amaranthus hybridus (syn: quitensis)BrazilBrazil 20185 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)
 		12Smooth Pigweed18184
92 November 28, 2019Amaranthus palmeriUnited States (North Carolina) United StatesNorth Carolina201645 Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
 		14Palmer Amaranth18188
93 November 28, 2019Secale cerealeUnited States (Colorado) United StatesColorado201845 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		351Feral Rye18182
94 November 28, 2019Echinochloa crus-galli var. crus-galliArgentinaArgentina 201948 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		79Barnyardgrass18183
95 November 22, 2019Avena sterilis ssp. ludovicianaAustralia (New South Wales ) AustraliaNew South Wales 20181 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		30Sterile oat18186
96 November 22, 2019Sonchus asperUnited KingdomUnited Kingdom 201644 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		163Spiny Sowthistle18185
97 November 19, 2019Poa annuaFranceFrance 201517 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		130Annual Bluegrass18180
98 November 19, 2019Poa trivialisFranceFrance 201217 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		350Roughstalk Bluegrass18179
99 November 19, 2019Rumex obtusifoliusFranceFrance 201717 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		349Broad-Leaved Dock18178
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