International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Weeds in Alberta, Canada.
#YearSpeciesSite of ActionActivesContacts
1 481Common Chickweed1988Stellaria media
Common Chickweed
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) chlorsulfuron, ethametsulfuron-methyl, imazamethabenz-methyl, metsulfuron-methyl, sulfometuron-methyl, thifensulfuron-methyl Linda Hall, Malcolm Devine
2 65Kochia1989Kochia scoparia
Kochia
Canada
(Alberta)
AlbertaAlberta Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) chlorsulfuron, metsulfuron-methyl, thifensulfuron-methyl, tribenuron-methyl Linda Hall
3 66Wild Oat1989Avena fatua
Wild Oat
Canada
(Alberta)
AlbertaAlberta Cell elongation inhibitors (Z/8), Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8) Multiple Resistance: 2 Sites of Action
Cell elongation inhibitors (Z/8)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
difenzoquat, tri-allate John O'Donovan, Robert Blackshaw, Hugh Beckie
4 5071Green Foxtail1989Setaria viridis
Green Foxtail
Canada
(Alberta)
Alberta  Inhibition of Microtubule Assembly 2 (K1/3) Inhibition of Microtubule Assembly 2 (K1/3) ethalfluralin, trifluralin Hugh Beckie
5 67Wild Oat1991Avena fatua
Wild Oat
Canada
(Alberta)
AlbertaAlberta Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetyl CoA Carboxylase (A/1) diclofop-methyl, fenoxaprop-ethyl, quizalofop-ethyl, tralkoxydim Robert Blackshaw
6 5036Wild Mustard1993Sinapis arvensis
Wild Mustard
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) ethametsulfuron-methyl, metsulfuron-methyl John O'Donovan, Lyle Friesen
7 5039Green Foxtail1996Setaria viridis
Green Foxtail
Canada
(Alberta)
Alberta  Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetyl CoA Carboxylase (A/1) diclofop-methyl, fenoxaprop-ethyl, sethoxydim John O'Donovan, Hugh Beckie
8 508False Cleavers1996Galium spurium
False Cleavers
Canada
(Alberta)
Alberta  Auxin Mimics (O/4), Inhibition of Acetolactate Synthase (B/2) Multiple Resistance: 2 Sites of Action
Auxin Mimics (O/4)
Inhibition of Acetolactate Synthase (B/2)
imazethapyr, metsulfuron-methyl, quinclorac, sulfometuron-methyl, thifensulfuron-methyl, triasulfuron, tribenuron-methyl Linda Hall
9 1153Spiny Sowthistle1996Sonchus asper
Spiny Sowthistle
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) chlorsulfuron, metsulfuron-methyl, thifensulfuron-methyl, tribenuron-methyl John O'Donovan
10 1154Common Hempnettle1998Galeopsis tetrahit
Common Hempnettle
Canada
(Alberta)
AlbertaAlberta Auxin Mimics (O/4) Auxin Mimics (O/4) dicamba, fluroxypyr, MCPA John O'Donovan, Chris Hall, Lyle Friesen, Tsafrir Weinberg
11 1155Ball Mustard1998Neslia paniculata
Ball Mustard
Canada
(Alberta)
AlbertaAlberta Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) metsulfuron-methyl John O'Donovan, Rene Van Acker, Lyle Friesen
12 5075Wild Oat1998Avena fatua
Wild Oat
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) imazamethabenz-methyl Hugh Beckie
13 5076Wild Oat1998Avena fatua
Wild Oat
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2), Inhibition of Acetyl CoA Carboxylase (A/1), Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8) Multiple Resistance: 3 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Acetyl CoA Carboxylase (A/1)
Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/8)
fenoxaprop-ethyl, imazamethabenz-methyl, tri-allate Hugh Beckie
14 5097Field Pennycress2001Thlaspi arvense
Field Pennycress
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) ethametsulfuron-methyl, imazethapyr, metsulfuron-methyl, thifensulfuron-methyl Hugh Beckie
15 5320Common Hempnettle2006Galeopsis tetrahit
Common Hempnettle
Canada
(Alberta)
AlbertaAlberta Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) thifensulfuron-methyl, tribenuron-methyl Hugh Beckie
16 5379Wild Buckwheat2007Polygonum convolvulus (=Fallopia convolvulus)
Wild Buckwheat
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) florasulam, thifensulfuron-methyl, tribenuron-methyl Hugh Beckie
17 7831Russian-thistle2007Salsola tragus
Russian-thistle
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) thifensulfuron-methyl, tribenuron-methyl Hugh Beckie
18 7832Persian Darnel2009Lolium persicum
Persian Darnel
Canada
(Alberta)
Alberta  Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetyl CoA Carboxylase (A/1) fenoxaprop-ethyl, pinoxaden, tralkoxydim Hugh Beckie
19 5606Narrowleaf Hawksbeard2011Crepis tectorum
Narrowleaf Hawksbeard
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) metsulfuron-methyl Hugh Beckie
20 5623Shepherd's-purse2011Capsella bursa-pastoris
Shepherd's-purse
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) thifensulfuron-methyl, tribenuron-methyl Hugh Beckie
21 5616Cowcockle2012Vaccaria hispanica
Cowcockle
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) metsulfuron-methyl, thifensulfuron-methyl, tribenuron-methyl Hugh Beckie
22 5592Kochia2012Kochia scoparia
Kochia
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2), Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
glyphosate, thifensulfuron-methyl, tribenuron-methyl Linda Hall, Robert Blackshaw, Hugh Beckie
23 11002Pale Smartweed2014Polygonum lapathifolium
Pale Smartweed
Canada
(Alberta)
Alberta  Inhibition of Acetolactate Synthase (B/2) Inhibition of Acetolactate Synthase (B/2) imazethapyr Hugh Beckie
24 17147Kochia2017Kochia scoparia
Kochia
Canada
(Alberta)
Alberta  Auxin Mimics (O/4), Inhibition of Acetolactate Synthase (B/2), Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) Multiple Resistance: 3 Sites of Action
Auxin Mimics (O/4)
Inhibition of Acetolactate Synthase (B/2)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
dicamba, glyphosate, thifensulfuron-methyl, tribenuron-methyl Hugh Beckie
25 21234Downy Brome (Cheatgrass)2021Bromus tectorum
Downy Brome (Cheatgrass)
Canada
(Alberta)
Alberta  Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) glyphosate Charles Geddes
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Thursday, December 2, 2021 .  Available  www.weedscience.org
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