International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Weeds in Oklahoma, United States.
#YearSpeciesSite of ActionActivesContacts
1 1069Kochia1992Kochia scoparia
Kochia
United States
(Oklahoma)
OklahomaOK ALS inhibitors (B/2) ALS inhibitors (B/2) chlorsulfuron, metsulfuron-methyl, sulfometuron-methyl Tom Peeper
2 1068Common cocklebur1996Xanthium strumarium
Common cocklebur
United States
(Oklahoma)
OklahomaOK ALS inhibitors (B/2) ALS inhibitors (B/2) imazethapyr Tom Peeper
3 5156Tall Waterhemp2002Amaranthus tuberculatus (=A. rudis)
Tall Waterhemp
United States
(Oklahoma)
Oklahoma  ALS inhibitors (B/2) ALS inhibitors (B/2) chlorimuron-ethyl, imazaquin, imazethapyr, nicosulfuron, primisulfuron-methyl Case Medlin
4 5527Cheat (Rye Brome)2009Bromus secalinus
Cheat (Rye Brome)
United States
(Oklahoma)
Oklahoma  ALS inhibitors (B/2) ALS inhibitors (B/2) imazamox, propoxycarbazone-sodium, pyroxsulam, sulfosulfuron Joe Armstrong
5 5528Horseweed2009Conyza canadensis
Horseweed
United States
(Oklahoma)
Oklahoma  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Joe Armstrong
6 5593Tall Waterhemp2011Amaranthus tuberculatus (=A. rudis)
Tall Waterhemp
United States
(Oklahoma)
Oklahoma  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Joe Armstrong
7 6755Kochia2013Kochia scoparia
Kochia
United States
(Oklahoma)
Oklahoma  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Phillip Stahlman
8 18167Italian Ryegrass2017Lolium perenne ssp. multiflorum
Italian Ryegrass
United States
(Oklahoma)
Oklahoma  ACCase inhibitors (A/1) ACCase inhibitors (A/1) pinoxaden Misha Manuchehri, Grace Flusche Ogden
9 17134Palmer Amaranth2018Amaranthus palmeri
Palmer Amaranth
United States
(Oklahoma)
Oklahoma  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Misha Manuchehri
10 17149Horseweed2018Conyza canadensis
Horseweed
United States
(Oklahoma)
Oklahoma  ALS inhibitors (B/2) ALS inhibitors (B/2) chlorsulfuron, metsulfuron-methyl Misha Manuchehri, Jodie Crose
Contributing Weed Scientists
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, October 19, 2019 .  Available  www.weedscience.org
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