INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Weeds in Spring Barley Globally
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Herbicide Resistant Weeds in Spring Barley Globally
(click on a column header to sort or click on a species for details)
Drag a column header and drop it here to group by that column
Herbicide Resistant Weeds in Spring Barley Globally
(click on a column header to sort or click on a species for details)
#SpeciesCommonNameCountryFirstYearSite of Action
1 Lolium perennePerennial RyegrassArgentinaArgentina 200848 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
5487Spring Barley
2 Avena fatuaWild OatArgentinaArgentina 201048 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
5587Spring Barley
3 Lolium rigidumRigid RyegrassAustralia (New South Wales ) AustraliaNew South Wales 19851 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
4Spring Barley
4 Avena fatuaWild OatAustralia (New South Wales ) AustraliaNew South Wales 19911 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
5Spring Barley
5 Sisymbrium orientaleOriental MustardAustralia (New South Wales ) AustraliaNew South Wales 19941 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5035Spring Barley
6 Avena fatuaWild OatAustralia (New South Wales ) AustraliaNew South Wales 20061 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Antimicrotubule mitotic disrupter HRAC Group 25 (Legacy Z)
10966Spring Barley
7 Phalaris paradoxaHood CanarygrassAustralia (New South Wales ) AustraliaNew South Wales 20121 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7840Spring Barley
8 Raphanus raphanistrumWild RadishAustralia (New South Wales ) AustraliaNew South Wales 20131 Auxin Mimics HRAC Group 4 (Legacy O)
7839Spring Barley
9 Rapistrum rugosumTurnipweedAustralia (New South Wales ) AustraliaNew South Wales 20211 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
19215Spring Barley
10 Avena sterilis ssp. ludovicianaSterile oatAustralia (Queensland) AustraliaQueensland20061 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
10967Spring Barley
11 Lolium rigidumRigid RyegrassAustralia (South Australia) AustraliaSouth Australia19821 Multiple Resistance: 6 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Deoxy-D-Xylulose Phosphate Synthase HRAC Group 13 (Legacy F4)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
Inhibition of Microtubule Organization HRAC Group 23 (Legacy K2)
Very Long-Chain Fatty Acid Synthesis inhibitors HRAC Group 15 (Legacy K3 N)
389Spring Barley
12 Sisymbrium orientaleOriental MustardAustralia (South Australia) AustraliaSouth Australia19901 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
24Spring Barley
13 Lactuca serriolaPrickly LettuceAustralia (South Australia) AustraliaSouth Australia19941 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
26Spring Barley
14 Raphanus raphanistrumWild RadishAustralia (South Australia) AustraliaSouth Australia19981 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5034Spring Barley
15 Galium tricornutumThreehorn BedstrawAustralia (South Australia) AustraliaSouth Australia20121 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7837Spring Barley
16 Lolium rigidumRigid RyegrassAustralia (Victoria) AustraliaVictoria19841 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
5042Spring Barley
17 Lactuca serriolaPrickly LettuceAustralia (Victoria) AustraliaVictoria20091 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5516Spring Barley
18 Raphanus raphanistrumWild RadishAustralia (Victoria) AustraliaVictoria20091 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Auxin Mimics HRAC Group 4 (Legacy O)
7845Spring Barley
19 Sisymbrium orientaleOriental MustardAustralia (Victoria) AustraliaVictoria20101 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7842Spring Barley
20 Sonchus oleraceusAnnual SowthistleAustralia (Victoria) AustraliaVictoria20101 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7844Spring Barley
21 Raphanus raphanistrumWild RadishAustralia (Victoria) AustraliaVictoria20111 Auxin Mimics HRAC Group 4 (Legacy O)
7846Spring Barley
22 Lolium rigidumRigid RyegrassAustralia (Western Australia) AustraliaWestern Australia19821 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
15Spring Barley
23 Lolium rigidumRigid RyegrassAustralia (Western Australia) AustraliaWestern Australia19841 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
324Spring Barley
24 Sisymbrium orientaleOriental MustardAustralia (Western Australia) AustraliaWestern Australia19941 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
3Spring Barley
25 Raphanus raphanistrumWild RadishBrazilBrazil 20135 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7895Spring Barley
26 Kochia scopariaKochiaCanada (Alberta) CanadaAlberta19897 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
65Spring Barley
27 Avena fatuaWild OatCanada (Alberta) CanadaAlberta19897 Multiple Resistance: 2 Sites of Action
Very Long-Chain Fatty Acid Synthesis inhibitors HRAC Group 15 (Legacy K3 N)
Cell elongation inhibitors HRAC Group 8 (Legacy Z)
66Spring Barley
28 Setaria viridisGreen FoxtailCanada (Alberta) CanadaAlberta19897 Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
5071Spring Barley
29 Sinapis arvensisWild MustardCanada (Alberta) CanadaAlberta19937 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5036Spring Barley
30 Sonchus asperSpiny SowthistleCanada (Alberta) CanadaAlberta19967 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
1153Spring Barley
31 Galeopsis tetrahitCommon HempnettleCanada (Alberta) CanadaAlberta19987 Auxin Mimics HRAC Group 4 (Legacy O)
1154Spring Barley
32 Thlaspi arvenseField PennycressCanada (Alberta) CanadaAlberta20017 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5097Spring Barley
33 Salsola tragusRussian-thistleCanada (Alberta) CanadaAlberta20077 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7831Spring Barley
34 Lolium persicumPersian DarnelCanada (Alberta) CanadaAlberta20097 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
7832Spring Barley
35 Kochia scopariaKochiaCanada (Alberta) CanadaAlberta20127 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
5592Spring Barley
36 Setaria viridisGreen FoxtailCanada (Manitoba) CanadaManitoba19887 Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
52Spring Barley
37 Kochia scopariaKochiaCanada (Manitoba) CanadaManitoba19887 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
57Spring Barley
38 Avena fatuaWild OatCanada (Manitoba) CanadaManitoba19907 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
50Spring Barley
39 Sinapis arvensisWild MustardCanada (Manitoba) CanadaManitoba19907 Auxin Mimics HRAC Group 4 (Legacy O)
55Spring Barley
40 Setaria viridisGreen FoxtailCanada (Manitoba) CanadaManitoba19917 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
53Spring Barley
41 Sinapis arvensisWild MustardCanada (Manitoba) CanadaManitoba19927 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
54Spring Barley
42 Setaria viridisGreen FoxtailCanada (Manitoba) CanadaManitoba19927 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
5037Spring Barley
43 Avena fatuaWild OatCanada (Manitoba) CanadaManitoba19947 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Antimicrotubule mitotic disrupter HRAC Group 25 (Legacy Z)
51Spring Barley
44 Avena fatuaWild OatCanada (Saskatchewan) CanadaSaskatchewan19907 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
5041Spring Barley
45 Setaria viridisGreen FoxtailCanada (Saskatchewan) CanadaSaskatchewan19917 Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
5040Spring Barley
46 Setaria viridisGreen FoxtailCanada (Saskatchewan) CanadaSaskatchewan19967 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
5038Spring Barley
47 Setaria viridisGreen FoxtailCanada (Saskatchewan) CanadaSaskatchewan19967 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
5070Spring Barley
48 Avena fatuaWild OatCanada (Saskatchewan) CanadaSaskatchewan19967 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Very Long-Chain Fatty Acid Synthesis inhibitors HRAC Group 15 (Legacy K3 N)
5074Spring Barley
49 Lolium persicumPersian DarnelCanada (Saskatchewan) CanadaSaskatchewan20047 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
5244Spring Barley
50 Stellaria mediaCommon ChickweedCanada (Saskatchewan) CanadaSaskatchewan20057 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5322Spring Barley
51 Galium spuriumFalse CleaversCanada (Saskatchewan) CanadaSaskatchewan20067 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5321Spring Barley
52 Chenopodium albumCommon LambsquartersCanada (Saskatchewan) CanadaSaskatchewan20097 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5627Spring Barley
53 Kochia scopariaKochiaCanada (Saskatchewan) CanadaSaskatchewan20127 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
7834Spring Barley
54 Lolium perenne ssp. multiflorumItalian RyegrassChileChile 20078 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
5452Spring Barley
55 Avena sterilisSterile OatCyprusCyprus 201053 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
5643Spring Barley
56 Stellaria mediaCommon ChickweedDenmarkDenmark 199113 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
86Spring Barley
57 Tripleurospermum perforatum (=T. inodorum)Scentless ChamomileDenmarkDenmark 201013 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5673Spring Barley
58 Capsella bursa-pastorisShepherd's-purseDenmarkDenmark 201213 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
8910Spring Barley
59 Stellaria mediaCommon ChickweedEstoniaEstonia 202199 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
30270Spring Barley
60 Stellaria mediaCommon ChickweedFinlandFinland 2013139 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
9946Spring Barley
61 Apera spica-ventiSilky WindgrassGermanyGermany 200918 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
5410Spring Barley
62 Stellaria mediaCommon ChickweedGermanyGermany 201118 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
6744Spring Barley
63 Avena fatuaWild OatIrelandIreland 201981 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
18200Spring Barley
64 Alopecurus aequalisShortawn FoxtailJapanJapan 200425 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
5570Spring Barley
65 Beckmannia syzigachneAmerican SloughgrassJapanJapan 201025 Inhibition of Microtubule Assembly HRAC Group 3 (Legacy K1)
7768Spring Barley
66 Sonchus asperSpiny SowthistleNorwayNorway 200631 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
10976Spring Barley
67 Polygonum persicariaLadysthumbNorwayNorway 200931 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
10977Spring Barley
68 Avena fatuaWild OatPolandPoland 200433 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
6761Spring Barley
69 Avena fatuaWild OatPolandPoland 201133 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
6762Spring Barley
70 Avena fatuaWild OatPolandPoland 201133 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
6763Spring Barley
71 Raphanus raphanistrumWild RadishSouth AfricaSouth Africa 199737 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
5197Spring Barley
72 Stellaria mediaCommon ChickweedSwedenSweden 199540 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
510Spring Barley
73 Avena fatuaWild OatUnited States (California) United StatesCalifornia199645 Cell elongation inhibitors HRAC Group 8 (Legacy Z)
1176Spring Barley
74 Avena fatuaWild OatUnited States (Colorado) United StatesColorado199745 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
1052Spring Barley
75 Avena fatuaWild OatUnited States (Montana) United StatesMontana199045 Multiple Resistance: 2 Sites of Action
Very Long-Chain Fatty Acid Synthesis inhibitors HRAC Group 15 (Legacy K3 N)
Cell elongation inhibitors HRAC Group 8 (Legacy Z)
412Spring Barley
76 Setaria viridisGreen FoxtailUnited States (Montana) United StatesMontana200545 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
7804Spring Barley
77 Stellaria mediaCommon ChickweedUnited States (Pennsylvania) United StatesPennsylvania201045 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
7898Spring Barley
78 Anthemis cotulaMayweed ChamomileUnited States (Washington) United StatesWashington201045 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
10987Spring Barley

HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Thursday, September 24, 2026.  Available at  www.weedscience.org

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