International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Weeds in Canada
Herbicide Resistant Weeds in Canada
Herbicide Resistant Weeds in Canada
State  
Herbicide Resistant Weeds in Canada
 #SpeciesCommon NameState NameFirst YearSite of Action

State: Alberta

  1 Stellaria mediaCommon ChickweedCanadaAlberta19887 Inhibition of Acetolactate Synthase (B/2)
481
  2 Kochia scopariaKochiaCanadaAlberta19897 Inhibition of Acetolactate Synthase (B/2)
65
  3 Avena fatuaWild OatCanadaAlberta19897 Multiple Resistance: 2 Sites of Action
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
Cell elongation inhibitors (Z/8)
66
  4 Setaria viridisGreen FoxtailCanadaAlberta19897 Inhibition of Microtubule Assembly 2 (K1/3)
5071
  5 Avena fatuaWild OatCanadaAlberta19917 Inhibition of Acetyl CoA Carboxylase (A/1)
67
  6 Sinapis arvensisWild MustardCanadaAlberta19937 Inhibition of Acetolactate Synthase (B/2)
5036
  7 Galium spuriumFalse CleaversCanadaAlberta19967 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Auxin Mimics (O/4)
508
  8 Sonchus asperSpiny SowthistleCanadaAlberta19967 Inhibition of Acetolactate Synthase (B/2)
1153
  9 Setaria viridisGreen FoxtailCanadaAlberta19967 Inhibition of Acetyl CoA Carboxylase (A/1)
5039
  10 Galeopsis tetrahitCommon HempnettleCanadaAlberta19987 Auxin Mimics (O/4)
1154
  11 Neslia paniculataBall MustardCanadaAlberta19987 Inhibition of Acetolactate Synthase (B/2)
1155
  12 Avena fatuaWild OatCanadaAlberta19987 Inhibition of Acetolactate Synthase (B/2)
5075
  13 Avena fatuaWild OatCanadaAlberta19987 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Acetolactate Synthase (B/2)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
5076
  14 Thlaspi arvenseField PennycressCanadaAlberta20017 Inhibition of Acetolactate Synthase (B/2)
5097
  15 Galeopsis tetrahitCommon HempnettleCanadaAlberta20067 Inhibition of Acetolactate Synthase (B/2)
5320
  16 Polygonum convolvulus (=Fallopia convolvulus)Wild BuckwheatCanadaAlberta20077 Inhibition of Acetolactate Synthase (B/2)
5379
  17 Salsola tragusRussian-thistleCanadaAlberta20077 Inhibition of Acetolactate Synthase (B/2)
7831
  18 Lolium persicumPersian DarnelCanadaAlberta20097 Inhibition of Acetyl CoA Carboxylase (A/1)
7832
  19 Crepis tectorumNarrowleaf HawksbeardCanadaAlberta20117 Inhibition of Acetolactate Synthase (B/2)
5606
  20 Capsella bursa-pastorisShepherd's-purseCanadaAlberta20117 Inhibition of Acetolactate Synthase (B/2)
5623
  21 Kochia scopariaKochiaCanadaAlberta20127 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
5592
  22 Vaccaria hispanicaCowcockleCanadaAlberta20127 Inhibition of Acetolactate Synthase (B/2)
5616
  23 Polygonum lapathifoliumPale SmartweedCanadaAlberta20147 Inhibition of Acetolactate Synthase (B/2)
11002
  24 Kochia scopariaKochiaCanadaAlberta20177 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
Auxin Mimics (O/4)
17147

State: British Columbia

  25 Centaurea stoebe ssp. micranthosSpotted knapweedCanadaBritish Columbia20137 Auxin Mimics (O/4)
15061

State: Manitoba

  26 Setaria viridisGreen FoxtailCanadaManitoba19887 Inhibition of Microtubule Assembly 2 (K1/3)
52
  27 Kochia scopariaKochiaCanadaManitoba19887 Inhibition of Acetolactate Synthase (B/2)
57
  28 Avena fatuaWild OatCanadaManitoba19907 Inhibition of Acetyl CoA Carboxylase (A/1)
50
  29 Sinapis arvensisWild MustardCanadaManitoba19907 Auxin Mimics (O/4)
55
  30 Setaria viridisGreen FoxtailCanadaManitoba19917 Inhibition of Acetyl CoA Carboxylase (A/1)
53
  31 Sinapis arvensisWild MustardCanadaManitoba19927 Inhibition of Acetolactate Synthase (B/2)
54
  32 Setaria viridisGreen FoxtailCanadaManitoba19927 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Microtubule Assembly 2 (K1/3)
5037
  33 Avena fatuaWild OatCanadaManitoba19947 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Acetolactate Synthase (B/2)
Antimicrotubule mitotic disrupter (Z/25)
51
  34 Sinapis arvensisWild MustardCanadaManitoba19947 PSII inhibitors - Serine 264 Binders (C1 C2/5)
56
  35 Galeopsis tetrahitCommon HempnettleCanadaManitoba19957 Inhibition of Acetolactate Synthase (B/2)
476
  36 Avena fatuaWild OatCanadaManitoba19977 Inhibition of Acetolactate Synthase (B/2)
5077
  37 Avena fatuaWild OatCanadaManitoba19977 Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
5078
  38 Avena fatuaWild OatCanadaManitoba19977 Multiple Resistance: 4 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Acetolactate Synthase (B/2)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
Antimicrotubule mitotic disrupter (Z/25)
5079
  39 Setaria viridisGreen FoxtailCanadaManitoba20027 Inhibition of Acetolactate Synthase (B/2)
5221
  40 Amaranthus retroflexusRedroot PigweedCanadaManitoba20027 Inhibition of Acetolactate Synthase (B/2)
5222
  41 Thlaspi arvenseField PennycressCanadaManitoba20087 Inhibition of Acetolactate Synthase (B/2)
5624
  42 Galium spuriumFalse CleaversCanadaManitoba20087 Inhibition of Acetolactate Synthase (B/2)
5629
  43 Stellaria mediaCommon ChickweedCanadaManitoba20087 Inhibition of Acetolactate Synthase (B/2)
5630
  44 Amaranthus powelliiPowell AmaranthCanadaManitoba20087 Inhibition of Acetolactate Synthase (B/2)
5631
  45 Polygonum lapathifoliumPale SmartweedCanadaManitoba20097 Inhibition of Acetolactate Synthase (B/2)
5625
  46 Kochia scopariaKochiaCanadaManitoba20147 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
9942
  47 Avena fatuaWild OatCanadaManitoba20157 Multiple Resistance: 5 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Protoporphyrinogen Oxidase (E/14)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
11033

State: Nova Scotia

  48 Rumex acetosellaSheep SorrelCanadaNova Scotia20117 PSII inhibitors - Serine 264 Binders (C1 C2/5)
17122

State: Ontario

  49 Daucus carotaWild CarrotCanadaOntario19577 Auxin Mimics (O/4)
307
  50 Chenopodium albumCommon LambsquartersCanadaOntario19737 PSII inhibitors - Serine 264 Binders (C1 C2/5)
58
  51 Ambrosia artemisiifoliaCommon RagweedCanadaOntario19767 PSII inhibitors - Serine 264 Binders (C1 C2/5)
59
  52 Chenopodium album var. striatum (=C. strictum var. glaucophyllum)Lateflowering GoosefootCanadaOntario19767 PSII inhibitors - Serine 264 Binders (C1 C2/5)
60
  53 Amaranthus powelliiPowell AmaranthCanadaOntario19777 PSII inhibitors - Serine 264 Binders (C1 C2/5)
1158
  54 Senecio vulgarisCommon GroundselCanadaOntario19777 PSII inhibitors - Serine 264 Binders (C1 C2/5)
5066
  55 Amaranthus retroflexusRedroot PigweedCanadaOntario19807 PSII inhibitors - Serine 264 Binders (C1 C2/5)
61
  56 Echinochloa crus-galli var. crus-galliBarnyardgrassCanadaOntario19817 PSII inhibitors - Serine 264 Binders (C1 C2/5)
62
  57 Panicum capillareWitchgrassCanadaOntario19817 PSII inhibitors - Serine 264 Binders (C1 C2/5)
63
  58 Setaria pumila (=S. glauca)Yellow FoxtailCanadaOntario19817 PSII inhibitors - Serine 264 Binders (C1 C2/5)
64
  59 Sinapis arvensisWild MustardCanadaOntario19837 PSII inhibitors - Serine 264 Binders (C1 C2/5)
5065
  60 Conyza canadensisHorseweedCanadaOntario19937 PS I Electron Diversion (D/22)
48
  61 Lepidium virginicumVirginia PepperweedCanadaOntario19937 PS I Electron Diversion (D/22)
49
  62 Amaranthus powelliiPowell AmaranthCanadaOntario19987 Inhibition of Acetolactate Synthase (B/2)
1159
  63 Amaranthus retroflexusRedroot PigweedCanadaOntario19987 Inhibition of Acetolactate Synthase (B/2)
1161
  64 Amaranthus powelliiPowell AmaranthCanadaOntario19987 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
5049
  65 Amaranthus powelliiPowell AmaranthCanadaOntario19997 Multiple Resistance: 2 Sites of Action
PSII inhibitors - Serine 264 Binders (C1 C2/5)
PSII inhibitors - Serine 264 Binders (C1 C2/7)
5048
  66 Solanum ptycanthumEastern Black NightshadeCanadaOntario20007 Inhibition of Acetolactate Synthase (B/2)
5211
  67 Ambrosia artemisiifoliaCommon RagweedCanadaOntario20007 Inhibition of Acetolactate Synthase (B/2)
5471
  68 Chenopodium albumCommon LambsquartersCanadaOntario20017 Inhibition of Acetolactate Synthase (B/2)
5123
  69 Setaria viridisGreen FoxtailCanadaOntario20017 Inhibition of Acetolactate Synthase (B/2)
5124
  70 Amaranthus retroflexusRedroot PigweedCanadaOntario20017 PSII inhibitors - Serine 264 Binders (C1 C2/7)
5125
  71 Amaranthus tuberculatus (=A. rudis)Tall WaterhempCanadaOntario20027 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
5212
  72 Amaranthus tuberculatus (=A. rudis)Tall WaterhempCanadaOntario20027 Inhibition of Acetolactate Synthase (B/2)
5213
  73 Setaria faberiGiant FoxtailCanadaOntario20037 Inhibition of Acetolactate Synthase (B/2)
5210
  74 Amaranthus hybridus (syn: quitensis)Smooth PigweedCanadaOntario20047 PSII inhibitors - Histidine 215 Binders (C3/6)
5472
  75 Amaranthus retroflexusRedroot PigweedCanadaOntario20057 PSII inhibitors - Histidine 215 Binders (C3/6)
5473
  76 Ambrosia trifidaGiant RagweedCanadaOntario20087 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
5483
  77 Solanum ptycanthumEastern Black NightshadeCanadaOntario20097 PS I Electron Diversion (D/22)
5493
  78 Conyza canadensisHorseweedCanadaOntario20107 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
5665
  79 Conyza canadensisHorseweedCanadaOntario20117 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
5666
  80 Digitaria sanguinalisLarge CrabgrassCanadaOntario20117 Inhibition of Acetyl CoA Carboxylase (A/1)
5678
  81 Ambrosia trifidaGiant RagweedCanadaOntario20117 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
7833
  82 Ambrosia artemisiifoliaCommon RagweedCanadaOntario20127 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
5713
  83 Amaranthus tuberculatus (=A. rudis)Tall WaterhempCanadaOntario20147 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
9940
  84 Amaranthus tuberculatus (=A. rudis)Tall WaterhempCanadaOntario20177 Multiple Resistance: 4 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
Inhibition of Protoporphyrinogen Oxidase (E/14)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
17140
  85 Amaranthus tuberculatus (=A. rudis)Tall WaterhempCanadaOntario20177 Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
17141
  86 Amaranthus tuberculatus (=A. rudis)Tall WaterhempCanadaOntario20177 Multiple Resistance: 2 Sites of Action
PSII inhibitors - Serine 264 Binders (C1 C2/5)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
17142

State: Quebec

  87 Brassica rapa (=B. campestris)Birdsrape MustardCanadaQuebec19777 PSII inhibitors - Serine 264 Binders (C1 C2/5)
433
  88 Amaranthus retroflexusRedroot PigweedCanadaQuebec19807 PSII inhibitors - Serine 264 Binders (C1 C2/5)
17126
  89 Chenopodium albumCommon LambsquartersCanadaQuebec19807 PSII inhibitors - Serine 264 Binders (C1 C2/5)
17132
  90 Ambrosia artemisiifoliaCommon RagweedCanadaQuebec19997 PSII inhibitors - Serine 264 Binders (C1 C2/7)
5064
  91 Ambrosia artemisiifoliaCommon RagweedCanadaQuebec19997 Multiple Resistance: 2 Sites of Action
PSII inhibitors - Serine 264 Binders (C1 C2/5)
PSII inhibitors - Serine 264 Binders (C1 C2/7)
17128
  92 Amaranthus retroflexusRedroot PigweedCanadaQuebec20017 PSII inhibitors - Serine 264 Binders (C1 C2/7)
5126
  93 Ambrosia artemisiifoliaCommon RagweedCanadaQuebec20077 Inhibition of Acetolactate Synthase (B/2)
17127
  94 Chenopodium albumCommon LambsquartersCanadaQuebec20087 Inhibition of Acetolactate Synthase (B/2)
17131
  95 Amaranthus retroflexusRedroot PigweedCanadaQuebec20097 Inhibition of Acetolactate Synthase (B/2)
17125
  96 Amaranthus powelliiPowell AmaranthCanadaQuebec20127 PSII inhibitors - Serine 264 Binders (C1 C2/7)
17123
  97 Amaranthus powelliiPowell AmaranthCanadaQuebec20127 Inhibition of Acetolactate Synthase (B/2)
17124
  98 Avena fatuaWild OatCanadaQuebec20127 Inhibition of Acetyl CoA Carboxylase (A/1)
17129
  99 Brassica rapa (=B. campestris)Birdsrape MustardCanadaQuebec20177 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
17130

State: Saskatchewan

  100 Kochia scopariaKochiaCanadaSaskatchewan19887 Inhibition of Acetolactate Synthase (B/2)
5069
  101 Salsola tragusRussian-thistleCanadaSaskatchewan19897 Inhibition of Acetolactate Synthase (B/2)
5067
  102 Avena fatuaWild OatCanadaSaskatchewan19907 Inhibition of Acetyl CoA Carboxylase (A/1)
5041
  103 Setaria viridisGreen FoxtailCanadaSaskatchewan19917 Inhibition of Microtubule Assembly 2 (K1/3)
5040
  104 Setaria viridisGreen FoxtailCanadaSaskatchewan19967 Inhibition of Acetyl CoA Carboxylase (A/1)
5038
  105 Setaria viridisGreen FoxtailCanadaSaskatchewan19967 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Microtubule Assembly 2 (K1/3)
5070
  106 Avena fatuaWild OatCanadaSaskatchewan19967 Inhibition of Acetolactate Synthase (B/2)
5072
  107 Avena fatuaWild OatCanadaSaskatchewan19967 Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
5073
  108 Avena fatuaWild OatCanadaSaskatchewan19967 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Acetolactate Synthase (B/2)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
5074
  109 Sinapis arvensisWild MustardCanadaSaskatchewan20027 Inhibition of Acetolactate Synthase (B/2)
5243
  110 Lolium persicumPersian DarnelCanadaSaskatchewan20047 Inhibition of Acetyl CoA Carboxylase (A/1)
5244
  111 Stellaria mediaCommon ChickweedCanadaSaskatchewan20057 Inhibition of Acetolactate Synthase (B/2)
5322
  112 Galium spuriumFalse CleaversCanadaSaskatchewan20067 Inhibition of Acetolactate Synthase (B/2)
5321
  113 Capsella bursa-pastorisShepherd's-purseCanadaSaskatchewan20087 Inhibition of Acetolactate Synthase (B/2)
5381
  114 Thlaspi arvenseField PennycressCanadaSaskatchewan20097 Inhibition of Acetolactate Synthase (B/2)
5626
  115 Chenopodium albumCommon LambsquartersCanadaSaskatchewan20097 Inhibition of Acetolactate Synthase (B/2)
5627
  116 Amaranthus retroflexusRedroot PigweedCanadaSaskatchewan20107 Inhibition of Acetolactate Synthase (B/2)
5628
  117 Kochia scopariaKochiaCanadaSaskatchewan20127 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
7834
  118 Kochia scopariaKochiaCanadaSaskatchewan20157 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Auxin Mimics (O/4)
11032
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Tuesday, October 19, 2021 .  Available  www.weedscience.org
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