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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

	#	Species	Common Name	Country	State Name	First Year	CountryID	Site of Action	ResistID
	State: Alberta
	1	Stellaria media	Common Chickweed	Canada	Alberta	1988	7	Inhibition of Acetolactate Synthase (B/2)	481
	2	Kochia scoparia	Kochia	Canada	Alberta	1989	7	Inhibition of Acetolactate Synthase (B/2)	65
	3	Avena fatua	Wild Oat	Canada	Alberta	1989	7	Multiple Resistance: 2 Sites of Action Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15) Cell elongation inhibitors (Z/8)	66
	4	Setaria viridis	Green Foxtail	Canada	Alberta	1989	7	Inhibition of Microtubule Assembly (K1/3)	5071
	5	Avena fatua	Wild Oat	Canada	Alberta	1991	7	Inhibition of Acetyl CoA Carboxylase (A/1)	67
	6	Sinapis arvensis	Wild Mustard	Canada	Alberta	1993	7	Inhibition of Acetolactate Synthase (B/2)	5036
	7	Galium spurium	False Cleavers	Canada	Alberta	1996	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Auxin Mimics (O/4)	508
	8	Sonchus asper	Spiny Sowthistle	Canada	Alberta	1996	7	Inhibition of Acetolactate Synthase (B/2)	1153
	9	Setaria viridis	Green Foxtail	Canada	Alberta	1996	7	Inhibition of Acetyl CoA Carboxylase (A/1)	5039
	10	Galeopsis tetrahit	Common Hempnettle	Canada	Alberta	1998	7	Auxin Mimics (O/4)	1154
	11	Neslia paniculata	Ball Mustard	Canada	Alberta	1998	7	Inhibition of Acetolactate Synthase (B/2)	1155
	12	Avena fatua	Wild Oat	Canada	Alberta	1998	7	Inhibition of Acetolactate Synthase (B/2)	5075
	13	Avena fatua	Wild Oat	Canada	Alberta	1998	7	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/15)	5076
	14	Thlaspi arvense	Field Pennycress	Canada	Alberta	2001	7	Inhibition of Acetolactate Synthase (B/2)	5097
	15	Galeopsis tetrahit	Common Hempnettle	Canada	Alberta	2006	7	Inhibition of Acetolactate Synthase (B/2)	5320
	16	Polygonum convolvulus (=Fallopia convolvulus)	Wild Buckwheat	Canada	Alberta	2007	7	Inhibition of Acetolactate Synthase (B/2)	5379
	17	Salsola tragus	Russian-thistle	Canada	Alberta	2007	7	Inhibition of Acetolactate Synthase (B/2)	7831
	18	Lolium persicum	Persian Darnel	Canada	Alberta	2009	7	Inhibition of Acetyl CoA Carboxylase (A/1)	7832
	19	Crepis tectorum	Narrowleaf Hawksbeard	Canada	Alberta	2011	7	Inhibition of Acetolactate Synthase (B/2)	5606
	20	Capsella bursa-pastoris	Shepherd's-purse	Canada	Alberta	2011	7	Inhibition of Acetolactate Synthase (B/2)	5623
	21	Kochia scoparia	Kochia	Canada	Alberta	2012	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5592
	22	Vaccaria hispanica	Cowcockle	Canada	Alberta	2012	7	Inhibition of Acetolactate Synthase (B/2)	5616
	23	Polygonum lapathifolium	Pale Smartweed	Canada	Alberta	2014	7	Inhibition of Acetolactate Synthase (B/2)	11002
	24	Kochia scoparia	Kochia	Canada	Alberta	2017	7	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
	25	Bromus tectorum	Downy Brome (Cheatgrass)	Canada	Alberta	2021	7	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	21234
	26	Hordeum jubatum	Foxtail Barley	Canada	Alberta	2022	7	Inhibition of Acetyl CoA Carboxylase (A/1)	25263
	State: British Columbia
	27	Centaurea stoebe ssp. micranthos	Spotted knapweed	Canada	British Columbia	2013	7	Auxin Mimics (O/4)	15061
	State: Manitoba
	28	Setaria viridis	Green Foxtail	Canada	Manitoba	1988	7	Inhibition of Microtubule Assembly (K1/3)	52
	29	Kochia scoparia	Kochia	Canada	Manitoba	1988	7	Inhibition of Acetolactate Synthase (B/2)	57
	30	Avena fatua	Wild Oat	Canada	Manitoba	1990	7	Inhibition of Acetyl CoA Carboxylase (A/1)	50
	31	Sinapis arvensis	Wild Mustard	Canada	Manitoba	1990	7	Auxin Mimics (O/4)	55
	32	Setaria viridis	Green Foxtail	Canada	Manitoba	1991	7	Inhibition of Acetyl CoA Carboxylase (A/1)	53
	33	Sinapis arvensis	Wild Mustard	Canada	Manitoba	1992	7	Inhibition of Acetolactate Synthase (B/2)	54
	34	Setaria viridis	Green Foxtail	Canada	Manitoba	1992	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Microtubule Assembly (K1/3)	5037
	35	Avena fatua	Wild Oat	Canada	Manitoba	1994	7	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
	36	Sinapis arvensis	Wild Mustard	Canada	Manitoba	1994	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	56
	37	Galeopsis tetrahit	Common Hempnettle	Canada	Manitoba	1995	7	Inhibition of Acetolactate Synthase (B/2)	476
	38	Avena fatua	Wild Oat	Canada	Manitoba	1997	7	Inhibition of Acetolactate Synthase (B/2)	5077
	39	Avena fatua	Wild Oat	Canada	Manitoba	1997	7	Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	5078
	40	Avena fatua	Wild Oat	Canada	Manitoba	1997	7	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/15) Antimicrotubule mitotic disrupter (Z/25)	5079
	41	Setaria viridis	Green Foxtail	Canada	Manitoba	2002	7	Inhibition of Acetolactate Synthase (B/2)	5221
	42	Amaranthus retroflexus	Redroot Pigweed	Canada	Manitoba	2002	7	Inhibition of Acetolactate Synthase (B/2)	5222
	43	Thlaspi arvense	Field Pennycress	Canada	Manitoba	2008	7	Inhibition of Acetolactate Synthase (B/2)	5624
	44	Galium spurium	False Cleavers	Canada	Manitoba	2008	7	Inhibition of Acetolactate Synthase (B/2)	5629
	45	Stellaria media	Common Chickweed	Canada	Manitoba	2008	7	Inhibition of Acetolactate Synthase (B/2)	5630
	46	Amaranthus powellii	Powell Amaranth	Canada	Manitoba	2008	7	Inhibition of Acetolactate Synthase (B/2)	5631
	47	Polygonum lapathifolium	Pale Smartweed	Canada	Manitoba	2009	7	Inhibition of Acetolactate Synthase (B/2)	5625
	48	Kochia scoparia	Kochia	Canada	Manitoba	2014	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	9942
	49	Avena fatua	Wild Oat	Canada	Manitoba	2015	7	Multiple Resistance: 4 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)	11033
	State: Nova Scotia
	50	Rumex acetosella	Sheep Sorrel	Canada	Nova Scotia	2011	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	17122
	State: Ontario
	51	Daucus carota	Wild Carrot	Canada	Ontario	1957	7	Auxin Mimics (O/4)	307
	52	Chenopodium album	Common Lambsquarters	Canada	Ontario	1973	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	58
	53	Ambrosia artemisiifolia	Common Ragweed	Canada	Ontario	1976	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	59
	54	Chenopodium album var. striatum (=C. strictum var. glaucophyllum)	Lateflowering Goosefoot	Canada	Ontario	1976	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	60
	55	Amaranthus powellii	Powell Amaranth	Canada	Ontario	1977	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	1158
	56	Senecio vulgaris	Common Groundsel	Canada	Ontario	1977	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	5066
	57	Amaranthus retroflexus	Redroot Pigweed	Canada	Ontario	1980	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	61
	58	Echinochloa crus-galli var. crus-galli	Barnyardgrass	Canada	Ontario	1981	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	62
	59	Panicum capillare	Witchgrass	Canada	Ontario	1981	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	63
	60	Setaria pumila (=S. glauca)	Yellow Foxtail	Canada	Ontario	1981	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	64
	61	Sinapis arvensis	Wild Mustard	Canada	Ontario	1983	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	5065
	62	Conyza canadensis	Horseweed	Canada	Ontario	1993	7	PS I Electron Diversion (D/22)	48
	63	Lepidium virginicum	Virginia Pepperweed	Canada	Ontario	1993	7	PS I Electron Diversion (D/22)	49
	64	Amaranthus powellii	Powell Amaranth	Canada	Ontario	1998	7	Inhibition of Acetolactate Synthase (B/2)	1159
	65	Amaranthus retroflexus	Redroot Pigweed	Canada	Ontario	1998	7	Inhibition of Acetolactate Synthase (B/2)	1161
	66	Amaranthus powellii	Powell Amaranth	Canada	Ontario	1998	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) PSII inhibitors - Serine 264 Binders (C1 C2/5)	5049
	67	Amaranthus powellii	Powell Amaranth	Canada	Ontario	1999	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	5048
	68	Solanum ptycanthum	Eastern Black Nightshade	Canada	Ontario	2000	7	Inhibition of Acetolactate Synthase (B/2)	5211
	69	Ambrosia artemisiifolia	Common Ragweed	Canada	Ontario	2000	7	Inhibition of Acetolactate Synthase (B/2)	5471
	70	Chenopodium album	Common Lambsquarters	Canada	Ontario	2001	7	Inhibition of Acetolactate Synthase (B/2)	5123
	71	Setaria viridis	Green Foxtail	Canada	Ontario	2001	7	Inhibition of Acetolactate Synthase (B/2)	5124
	72	Amaranthus retroflexus	Redroot Pigweed	Canada	Ontario	2001	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	5125
	73	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2002	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) PSII inhibitors - Serine 264 Binders (C1 C2/5)	5212
	74	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2002	7	Inhibition of Acetolactate Synthase (B/2)	5213
	75	Setaria faberi	Giant Foxtail	Canada	Ontario	2003	7	Inhibition of Acetolactate Synthase (B/2)	5210
	76	Amaranthus hybridus (syn: quitensis)	Smooth Pigweed	Canada	Ontario	2004	7	PSII inhibitors - Histidine 215 Binders (C3/6)	5472
	77	Amaranthus retroflexus	Redroot Pigweed	Canada	Ontario	2005	7	PSII inhibitors - Histidine 215 Binders (C3/6)	5473
	78	Ambrosia trifida	Giant Ragweed	Canada	Ontario	2008	7	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5483
	79	Solanum ptycanthum	Eastern Black Nightshade	Canada	Ontario	2009	7	PS I Electron Diversion (D/22)	5493
	80	Conyza canadensis	Horseweed	Canada	Ontario	2010	7	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5665
	81	Conyza canadensis	Horseweed	Canada	Ontario	2011	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5666
	82	Digitaria sanguinalis	Large Crabgrass	Canada	Ontario	2011	7	Inhibition of Acetyl CoA Carboxylase (A/1)	5678
	83	Ambrosia trifida	Giant Ragweed	Canada	Ontario	2011	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	7833
	84	Ambrosia artemisiifolia	Common Ragweed	Canada	Ontario	2012	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5713
	85	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2014	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	9940
	86	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2017	7	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
	87	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2017	7	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
	88	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2017	7	Multiple Resistance: 2 Sites of Action PSII inhibitors - Serine 264 Binders (C1 C2/5) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	17142
	89	Amaranthus powellii	Powell Amaranth	Canada	Ontario	2019	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Auxin Mimics (O/4)	24243
	90	Lolium perenne ssp. multiflorum	Italian Ryegrass	Canada	Ontario	2021	7	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	22236
	91	Amaranthus tuberculatus (=A. rudis)	Tall Waterhemp	Canada	Ontario	2021	7	Multiple Resistance: 5 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 Hydroxyphenyl Pyruvate Dioxygenase (F2/27) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	24242
	State: Quebec
	92	Brassica rapa (=B. campestris)	Birdsrape Mustard	Canada	Quebec	1977	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	433
	93	Amaranthus retroflexus	Redroot Pigweed	Canada	Quebec	1980	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	17126
	94	Chenopodium album	Common Lambsquarters	Canada	Quebec	1980	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	17132
	95	Ambrosia artemisiifolia	Common Ragweed	Canada	Quebec	1999	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	5064
	96	Ambrosia artemisiifolia	Common Ragweed	Canada	Quebec	1999	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	17128
	97	Amaranthus retroflexus	Redroot Pigweed	Canada	Quebec	2001	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	5126
	98	Ambrosia artemisiifolia	Common Ragweed	Canada	Quebec	2007	7	Inhibition of Acetolactate Synthase (B/2)	17127
	99	Chenopodium album	Common Lambsquarters	Canada	Quebec	2008	7	Inhibition of Acetolactate Synthase (B/2)	17131
	100	Amaranthus retroflexus	Redroot Pigweed	Canada	Quebec	2009	7	Inhibition of Acetolactate Synthase (B/2)	17125
	101	Amaranthus powellii	Powell Amaranth	Canada	Quebec	2012	7	PSII inhibitors - Serine 264 Binders (C1 C2/5)	17123
	102	Amaranthus powellii	Powell Amaranth	Canada	Quebec	2012	7	Inhibition of Acetolactate Synthase (B/2)	17124
	103	Avena fatua	Wild Oat	Canada	Quebec	2012	7	Inhibition of Acetyl CoA Carboxylase (A/1)	17129
	104	Brassica rapa (=B. campestris)	Birdsrape Mustard	Canada	Quebec	2017	7	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	17130
	State: Saskatchewan
	105	Kochia scoparia	Kochia	Canada	Saskatchewan	1988	7	Inhibition of Acetolactate Synthase (B/2)	5069
	106	Salsola tragus	Russian-thistle	Canada	Saskatchewan	1989	7	Inhibition of Acetolactate Synthase (B/2)	5067
	107	Avena fatua	Wild Oat	Canada	Saskatchewan	1990	7	Inhibition of Acetyl CoA Carboxylase (A/1)	5041
	108	Setaria viridis	Green Foxtail	Canada	Saskatchewan	1991	7	Inhibition of Microtubule Assembly (K1/3)	5040
	109	Setaria viridis	Green Foxtail	Canada	Saskatchewan	1996	7	Inhibition of Acetyl CoA Carboxylase (A/1)	5038
	110	Setaria viridis	Green Foxtail	Canada	Saskatchewan	1996	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Microtubule Assembly (K1/3)	5070
	111	Avena fatua	Wild Oat	Canada	Saskatchewan	1996	7	Inhibition of Acetolactate Synthase (B/2)	5072
	112	Avena fatua	Wild Oat	Canada	Saskatchewan	1996	7	Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	5073
	113	Avena fatua	Wild Oat	Canada	Saskatchewan	1996	7	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/15)	5074
	114	Sinapis arvensis	Wild Mustard	Canada	Saskatchewan	2002	7	Inhibition of Acetolactate Synthase (B/2)	5243
	115	Lolium persicum	Persian Darnel	Canada	Saskatchewan	2004	7	Inhibition of Acetyl CoA Carboxylase (A/1)	5244
	116	Stellaria media	Common Chickweed	Canada	Saskatchewan	2005	7	Inhibition of Acetolactate Synthase (B/2)	5322
	117	Galium spurium	False Cleavers	Canada	Saskatchewan	2006	7	Inhibition of Acetolactate Synthase (B/2)	5321
	118	Capsella bursa-pastoris	Shepherd's-purse	Canada	Saskatchewan	2008	7	Inhibition of Acetolactate Synthase (B/2)	5381
	119	Thlaspi arvense	Field Pennycress	Canada	Saskatchewan	2009	7	Inhibition of Acetolactate Synthase (B/2)	5626
	120	Chenopodium album	Common Lambsquarters	Canada	Saskatchewan	2009	7	Inhibition of Acetolactate Synthase (B/2)	5627
	121	Amaranthus retroflexus	Redroot Pigweed	Canada	Saskatchewan	2010	7	Inhibition of Acetolactate Synthase (B/2)	5628
	122	Kochia scoparia	Kochia	Canada	Saskatchewan	2012	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	7834
	123	Kochia scoparia	Kochia	Canada	Saskatchewan	2015	7	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Auxin Mimics (O/4)	11032
	124	Kochia scoparia	Kochia	Canada	Saskatchewan	2021	7	Inhibition of Protoporphyrinogen Oxidase (E/14)	25259

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