International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Weeds in Quebec, Canada.
#YearSpeciesSite of ActionActivesContacts
1 433Birdsrape Mustard1977Brassica rapa (=B. campestris)
Birdsrape Mustard
Canada
(Quebec)
QuebecQuebec Photosystem II inhibitors (C1/5) Photosystem II inhibitors (C1/5) atrazine Hugh Beckie
2 17126Redroot Pigweed1980Amaranthus retroflexus
Redroot Pigweed
Canada
(Quebec)
Quebec  Photosystem II inhibitors (C1/5) Photosystem II inhibitors (C1/5) atrazine, metribuzin Danielle Bernier
3 17132Common Lambsquarters1980Chenopodium album
Common Lambsquarters
Canada
(Quebec)
Quebec  Photosystem II inhibitors (C1/5) Photosystem II inhibitors (C1/5) atrazine Danielle Bernier
4 17128Common Ragweed1999Ambrosia artemisiifolia
Common Ragweed
Canada
(Quebec)
Quebec  Photosystem II inhibitors (C1/5), PSII inhibitor (Ureas and amides) (C2/7) Multiple Resistance: 2 Sites of Action
Photosystem II inhibitors (C1/5)
PSII inhibitor (Ureas and amides) (C2/7)
linuron, metribuzin Francois Tardif
5 5064Common Ragweed1999Ambrosia artemisiifolia
Common Ragweed
Canada
(Quebec)
Quebec  PSII inhibitor (Ureas and amides) (C2/7) PSII inhibitor (Ureas and amides) (C2/7) linuron Francois Tardif, Hugh Beckie
6 5126Redroot Pigweed2001Amaranthus retroflexus
Redroot Pigweed
Canada
(Quebec)
Quebec  PSII inhibitor (Ureas and amides) (C2/7) PSII inhibitor (Ureas and amides) (C2/7) linuron Francois Tardif
7 17127Common Ragweed2007Ambrosia artemisiifolia
Common Ragweed
Canada
(Quebec)
Quebec  ALS inhibitors (B/2) ALS inhibitors (B/2) cloransulam-methyl, imazethapyr Francois Tardif, Marie-Josée Simard
8 17131Common Lambsquarters2008Chenopodium album
Common Lambsquarters
Canada
(Quebec)
Quebec  ALS inhibitors (B/2) ALS inhibitors (B/2) thifensulfuron-methyl Francois Tardif
9 17125Redroot Pigweed2009Amaranthus retroflexus
Redroot Pigweed
Canada
(Quebec)
Quebec  ALS inhibitors (B/2) ALS inhibitors (B/2) imazethapyr Francois Tardif
10 17129Wild Oat2012Avena fatua
Wild Oat
Canada
(Quebec)
Quebec  ACCase inhibitors (A/1) ACCase inhibitors (A/1) fenoxaprop-P-ethyl, tralkoxydim Francois Tardif, Danielle Bernier, Marie-Josée Simard
11 17123Powell Amaranth2012Amaranthus powellii
Powell Amaranth
Canada
(Quebec)
Quebec  PSII inhibitor (Ureas and amides) (C2/7) PSII inhibitor (Ureas and amides) (C2/7) linuron Francois Tardif
12 17124Powell Amaranth2012Amaranthus powellii
Powell Amaranth
Canada
(Quebec)
Quebec  ALS inhibitors (B/2) ALS inhibitors (B/2) imazethapyr Francois Tardif
13 17130Birdsrape Mustard2017Brassica rapa (=B. campestris)
Birdsrape Mustard
Canada
(Quebec)
Quebec  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Martin Laforest, Marie-Josée Simard
Contributing Weed Scientists
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Sunday, June 16, 2019 .  Available  www.weedscience.org
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