International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Weeds in Ohio, United States.
#YearSpeciesSite of ActionActivesContacts
1 1089Common Lambsquarters1981Chenopodium album
Common Lambsquarters
United States
(Ohio)
OhioOH Photosystem II inhibitors (C1/5) Photosystem II inhibitors (C1/5) atrazine Jeff Stachler
2 5234Wild Carrot1994Daucus carota
Wild Carrot
United States
(Ohio)
Ohio  Synthetic Auxins (O/4) Synthetic Auxins (O/4) 2,4-D Jeff Stachler
3 1087Tall Waterhemp1996Amaranthus tuberculatus (=A. rudis)
Tall Waterhemp
United States
(Ohio)
OhioOH ALS inhibitors (B/2) ALS inhibitors (B/2) chlorimuron-ethyl, imazethapyr, thifensulfuron-methyl Jeff Stachler
4 1100Powell Amaranth1996Amaranthus powellii
Powell Amaranth
United States
(Ohio)
OhioOH ALS inhibitors (B/2) ALS inhibitors (B/2) imazaquin Jeff Stachler
5 1117Common Ragweed1998Ambrosia artemisiifolia
Common Ragweed
United States
(Ohio)
OhioOH ALS inhibitors (B/2) ALS inhibitors (B/2) chlorimuron-ethyl, cloransulam-methyl, halosulfuron-methyl, imazamox, imazaquin, primisulfuron-methyl, prosulfuron Jeff Stachler, Paul Schmitzer
6 1164Giant Ragweed1998Ambrosia trifida
Giant Ragweed
United States
(Ohio)
OhioOH ALS inhibitors (B/2) ALS inhibitors (B/2) chlorimuron-ethyl, cloransulam-methyl, imazamox, imazaquin, primisulfuron-methyl, prosulfuron Jeff Stachler
7 1197Common cocklebur1999Xanthium strumarium
Common cocklebur
United States
(Ohio)
OhioOH ALS inhibitors (B/2) ALS inhibitors (B/2) chlorimuron-ethyl, cloransulam-methyl Mark Loux, Jeff Stachler
8 5235Shattercane2000Sorghum bicolor
Shattercane
United States
(Ohio)
Ohio  ALS inhibitors (B/2) ALS inhibitors (B/2) imazethapyr, nicosulfuron, primisulfuron-methyl Jeff Stachler
9 5157Horseweed2001Conyza canadensis
Horseweed
United States
(Ohio)
Ohio  ALS inhibitors (B/2) ALS inhibitors (B/2) chlorimuron-ethyl, cloransulam-methyl Mark Loux, Jeff Stachler
10 5232Common Lambsquarters2001Chenopodium album
Common Lambsquarters
United States
(Ohio)
Ohio  ALS inhibitors (B/2) ALS inhibitors (B/2) thifensulfuron-methyl Jeff Stachler
11 5233Smooth Pigweed2001Amaranthus hybridus (syn: quitensis)
Smooth Pigweed
United States
(Ohio)
Ohio  ALS inhibitors (B/2) ALS inhibitors (B/2) flumetsulam, thifensulfuron-methyl Jeff Stachler
12 5127Horseweed2002Conyza canadensis
Horseweed
United States
(Ohio)
Ohio  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Mark Loux, Jeff Stachler
13 5158Horseweed2003Conyza canadensis
Horseweed
United States
(Ohio)
Ohio  ALS inhibitors (B/2), EPSP synthase inhibitors (G/9) Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
EPSP synthase inhibitors (G/9)
chlorimuron-ethyl, cloransulam-methyl, glyphosate Mark Loux, Jeff Stachler
14 5278Giant Ragweed2004Ambrosia trifida
Giant Ragweed
United States
(Ohio)
Ohio  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Mark Loux, Jeff Stachler
15 5406Common Ragweed2006Ambrosia artemisiifolia
Common Ragweed
United States
(Ohio)
Ohio  ALS inhibitors (B/2), EPSP synthase inhibitors (G/9) Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
EPSP synthase inhibitors (G/9)
chlorimuron-ethyl, cloransulam-methyl, glyphosate Mark Loux
16 5407Common Ragweed2006Ambrosia artemisiifolia
Common Ragweed
United States
(Ohio)
Ohio  ALS inhibitors (B/2), PPO inhibitors (E/14) Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
PPO inhibitors (E/14)
chlorimuron-ethyl, cloransulam-methyl, fomesafen, lactofen Mark Loux
17 5408Giant Ragweed2006Ambrosia trifida
Giant Ragweed
United States
(Ohio)
Ohio  ALS inhibitors (B/2), EPSP synthase inhibitors (G/9) Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
EPSP synthase inhibitors (G/9)
chlorimuron-ethyl, cloransulam-methyl, glyphosate Mark Loux
18 5697Tall Waterhemp2008Amaranthus tuberculatus (=A. rudis)
Tall Waterhemp
United States
(Ohio)
Ohio  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Mark Loux
19 5696Palmer Amaranth2010Amaranthus palmeri
Palmer Amaranth
United States
(Ohio)
Ohio  EPSP synthase inhibitors (G/9) EPSP synthase inhibitors (G/9) glyphosate Mark Loux
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, September 23, 2017 .  Available  www.weedscience.org
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