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 June 15, 2024Oryza sativa var. sylvaticaArgentinaArgentina 201848 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
242Red Rice27289
2 June 8, 2024Conyza bonariensisUruguayUruguay 202273 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)
60Hairy Fleabane27291
3 June 6, 2024Cyperus difformisPortugalPortugal 202334 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Histidine 215 Binders HRAC Group 6 (Legacy C3)
71Smallflower Umbrella Sedge28270
4 May 24, 2024Bidens pilosaBrazilBrazil 20225 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
32Hairy Beggarticks27288
5 May 24, 2024Digitaria sanguinalisSwitzerlandSwitzerland 202141 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
77Large Crabgrass27290
6 May 24, 2024Amaranthus hybridus (syn: quitensis)South AfricaSouth Africa 202437 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
12Smooth Pigweed27287
7 May 19, 2024Glebionis segetumGreeceGreece 202119 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
2358Corn Marigold28272
8 May 4, 2024Echinochloa phyllopogon (=E. oryzicola)PortugalPortugal 202034 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)
178Late Watergrass28269
9 April 20, 2024Echinochloa phyllopogon (=E. oryzicola)PortugalPortugal 202034 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
178Late Watergrass28268
10 April 9, 2024Papaver rhoeasPortugalPortugal 201834 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Auxin Mimics HRAC Group 4 (Legacy O)
123Corn Poppy28267
11 March 25, 2024Chloris truncataSpainSpain 202338 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
262Windmill Grass27293
12 March 18, 2024Conyza canadensisUnited States (Oregon) United StatesOregon202345 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
61Horseweed27286
13 March 18, 2024Conyza bonariensisUnited States (Oregon) United StatesOregon202345 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
60Hairy Fleabane27285
14 March 18, 2024Amaranthus palmeriUnited States (Iowa) United StatesIowa202245 Multiple Resistance: 4 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 Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
14Palmer Amaranth27284
15 March 5, 2024Papaver rhoeasPortugalPortugal 201834 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
123Corn Poppy28271
16 March 3, 2024Lolium perenne ssp. multiflorumPortugalPortugal 201934 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
110Italian Ryegrass28266
17 February 24, 2024Echinochloa crus-galli var. crus-galliPortugalPortugal 201834 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
79Barnyardgrass28265
18 February 20, 2024Echinochloa crus-galli var. crus-galliPortugalPortugal 201534 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
79Barnyardgrass28264
19 February 20, 2024Amaranthus palmeriSpainSpain 202338 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 Amaranth27292
20 February 18, 2024Echinochloa phyllopogon (=E. oryzicola)PortugalPortugal 201534 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
178Late Watergrass27294
21 January 21, 2024Bromus diandrusNew ZealandNew Zealand 202430 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
197Ripgut Brome27283
22 November 19, 2023Avena sterilisSpainSpain 202338 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
29Sterile Oat27282
23 November 9, 2023Amaranthus tuberculatus (=A. rudis)United States (Idaho) United StatesIdaho202345 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
219Tall Waterhemp27264
24 November 3, 2023Amaranthus hybridus (syn: quitensis)ItalyItaly 201824 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
12Smooth Pigweed27281
25 October 30, 2023Amaranthus tuberculatus (=A. rudis)United States (Iowa) United StatesIowa202145 Auxin Mimics HRAC Group 4 (Legacy O)
219Tall Waterhemp27263
26 October 26, 2023Conyza bonariensisJordanJordan 202255 Multiple Resistance: 2 Sites of Action
PS I Electron Diversion HRAC Group 22 (Legacy D)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
60Hairy Fleabane27269
27 October 25, 2023Echinochloa crus-galli var. crus-galliThailandThailand 202147 Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
79Barnyardgrass27275
28 October 18, 2023Poa annuaIrelandIreland 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)
130Annual Bluegrass27262
29 September 26, 2023Monochoria vaginalisIndonesiaIndonesia 202222 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
202Arrowleafed Monochoria27274
30 September 14, 2023Ambrosia artemisiifoliaUkraineUkraine 2023230 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
18Common Ragweed26266
31 September 5, 2023Echinochloa crus-galli var. crus-galliBrazilBrazil 20185 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
Auxin Mimics HRAC Group 4 (Legacy O)
79Barnyardgrass26265
32 September 5, 2023Bidens subalternansBrazilBrazil 20235 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
194Greater Beggarticks26263
33 September 5, 2023Sagittaria montevidensisBrazilBrazil 20235 Auxin Mimics HRAC Group 4 (Legacy O)
146California Arrowhead26264
34 August 28, 2023Bromus diandrusAustralia (Western Australia) AustraliaWestern Australia20201 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
197Ripgut Brome26262
35 August 5, 2023Panicum miliaceum var. ruderale Kitag.ChinaChina 20239 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
1359Wild Panicgrass27273
36 July 23, 2023Steinchisma laxumMexicoMexico 202329 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
1358Lax Panicgrass27271
37 July 13, 2023Echinochloa crus-galli var. crus-galliIndiaIndia 201721 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
79Barnyardgrass25264
38 July 11, 2023Amaranthus palmeriUnited States (Colorado) United StatesColorado202145 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
14Palmer Amaranth25265
39 July 11, 2023Amaranthus 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
40 July 6, 2023Digitaria sanguinalisNew ZealandNew Zealand 202230 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
77Large Crabgrass25262
41 June 29, 2023Hordeum jubatumCanada (Alberta) CanadaAlberta20227 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
358Foxtail Barley25263
42 June 23, 2023Ammannia multifloraChinaChina 20229 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
1360Many Flowered Ammannia27279
43 June 8, 2023Galium spuriumGreeceGreece 202219 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
93False Cleavers27278
44 June 5, 2023Plantago lanceolataSouth AfricaSouth Africa 202237 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)
220Buckhorn Plantain27276
45 June 3, 2023Ambrosia artemisiifoliaUnited States (Michigan) United StatesMichigan202245 Auxin Mimics HRAC Group 4 (Legacy O)
18Common Ragweed27277
46 May 9, 2023Echinochloa oryzoidesArgentinaArgentina 201648 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
261Early Watergrass25261
47 May 9, 2023Poa annuaUnited States (Georgia) United StatesGeorgia202245 Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
130Annual Bluegrass25260
48 April 25, 2023Kochia scopariaCanada (Saskatchewan) CanadaSaskatchewan20217 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
101Kochia25259
49 April 24, 2023Bromus commutatusUnited KingdomUnited Kingdom 202044 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
357Meadow Brome25258
50 April 23, 2023Bromus sterilisUnited KingdomUnited Kingdom 202044 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
289Poverty Brome25257
51 April 23, 2023Bromus diandrusUnited KingdomUnited Kingdom 202044 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
197Ripgut Brome25256
52 April 4, 2023Lolium perenne ssp. multiflorumChinaChina 20229 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 Ryegrass27266
53 March 30, 2023Digitaria ciliarisChinaChina 20219 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
225Southern Crabgrass27272
54 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
55 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
56 March 15, 2023Amaranthus retroflexusUnited States (North Carolina) United StatesNorth Carolina202245 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
16Redroot Pigweed24258
57 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
58 March 12, 2023Echinochloa phyllopogon (=E. oryzicola)ChinaChina 20239 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
178Late Watergrass27267
59 March 11, 2023Ammannia auriculataChinaChina 20239 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
183Eared Redstem27280
60 March 8, 2023Cyperus esculentusItalyItaly 201724 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
290Yellow Nutsedge24256
61 February 16, 2023Stellaria mediaUnited States (California) United StatesCalifornia202245 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
168Common Chickweed24253
62 February 2, 2023Leptochloa chinensisChinaChina 20239 Inhibition of Hydroxyphenyl Pyruvate Dioxygenase HRAC Group 27 (Legacy F2)
223Chinese Sprangletop27268
63 January 31, 2023Amaranthus palmeriUruguayUruguay 202273 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
14Palmer Amaranth24254
64 January 31, 2023Amaranthus hybridus (syn: quitensis)UruguayUruguay 202273 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
12Smooth Pigweed24255
65 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
66 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
67 November 22, 2022Chenopodium albumUkraineUkraine 2022230 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
47Common Lambsquarters24250
68 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
69 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
70 November 3, 2022Conyza canadensisSwitzerlandSwitzerland 202141 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
61Horseweed24248
71 November 3, 2022Conyza bonariensisSwitzerlandSwitzerland 202041 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
60Hairy Fleabane24247
72 October 24, 2022Panicum dichotomiflorumUnited States (Illinois) United StatesIllinois201945 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
122Fall Panicum24246
73 October 24, 2022Amaranthus tuberculatus (=A. rudis)UruguayUruguay 202273 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
219Tall Waterhemp24245
74 October 24, 2022Amaranthus palmeriUnited States (North Carolina) United StatesNorth Carolina202245 Inhibition of Glutamine Synthetase HRAC Group 10 (Legacy H)
14Palmer Amaranth24244
75 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
76 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
77 July 11, 2022Amaranthus hybridus (syn: quitensis)ArgentinaArgentina 202148 Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
12Smooth Pigweed23243
78 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
79 June 13, 2022Amaranthus palmeriUnited States (North Carolina) United StatesNorth Carolina202245 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
14Palmer Amaranth23241
80 June 12, 2022Anthriscus caucalisGermanyGermany 201718 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
356Bur Chervil23240
81 April 27, 2022Digitaria sanguinalisArgentinaArgentina 201948 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
77Large Crabgrass23239
82 April 9, 2022Amaranthus palmeriUnited States (Idaho) United StatesIdaho202345 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
14Palmer Amaranth27265
83 March 18, 2022Sorghum halepenseUnited States (Missouri) United StatesMissouri201945 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
166Johnsongrass23238
84 March 14, 2022Cyperus difformisIndiaIndia 201721 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
71Smallflower Umbrella Sedge23236
85 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 AssemblyHRAC Group 3 (Legacy K1)
Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
130Annual Bluegrass23237
86 February 8, 2022Lolium perenne ssp. multiflorumCanada (Ontario) CanadaOntario20217 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
110Italian Ryegrass22236
87 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
88 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
89 November 23, 2021Tripleurospermum perforatum (=T. inodorum)Czech RepublicCzech Republic 202112 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
116Scentless Chamomile21235
90 October 25, 2021Bromus tectorumCanada (Alberta) CanadaAlberta20217 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
40Downy Brome (Cheatgrass)21234
91 October 8, 2021Zea mays ssp. mexicanaFranceFrance 202017 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
354Mexican teosinte21231
92 October 8, 2021Ambrosia artemisiifoliaFranceFrance 201317 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
18Common Ragweed21230
93 September 27, 2021Aster squamatusMexicoMexico 202129 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
353Saltmarsh Aster21229
94 September 9, 2021Arabidopsis thalianaUnited States (Virginia) United StatesVirginia201545 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
292Mouse-ear Cress21232
95 August 30, 2021Amaranthus retroflexusUkraineUkraine 2020230 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
16Redroot Pigweed20231
96 August 30, 2021Polygonum pensylvanicumUnited States (Arkansas) United StatesArkansas202045 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
135Pennsylvania Smartweed20230
97 August 30, 2021Amaranthus palmeriUnited States (Arkansas) United StatesArkansas202045 Inhibition of Glutamine Synthetase HRAC Group 10 (Legacy H)
14Palmer Amaranth20229
98 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
99 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
100 July 11, 2021Leptochloa fusca spp. fasicularisUnited States (California) United StatesCalifornia202045 Inhibition of Deoxy-D-Xylulose Phosphate SynthaseHRAC Group 13 (Legacy F4)
355Bearded Sprangletop21233

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