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Herbicide Resistant Weeds in Spain
Herbicide Resistant Weeds in Spain Drag a column header and drop it here to group by that column

Herbicide Resistant Weeds in Spain

#	Species	Common Name	Country	State Name	First Year	CountryID	Site of Action	ResistID
1	Panicum dichotomiflorum	Fall Panicum	Spain		1981	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	527
2	Amaranthus hybridus (syn: quitensis)	Smooth Pigweed	Spain		1985	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	175
3	Amaranthus blitoides	Prostrate Pigweed	Spain		1986	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	183
4	Amaranthus retroflexus	Redroot Pigweed	Spain		1986	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	187
5	Conyza canadensis	Horseweed	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	177
6	Setaria viridis	Green Foxtail	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	178
7	Setaria pumila (=S. glauca)	Yellow Foxtail	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	179
8	Solanum nigrum	Black Nightshade	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	180
9	Conyza bonariensis	Hairy Fleabane	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	181
10	Amaranthus albus	Tumble Pigweed	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	182
11	Setaria faberi	Giant Foxtail	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	184
12	Chenopodium album	Common Lambsquarters	Spain		1987	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	186
13	Amaranthus cruentus	Red Amaranth	Spain		1989	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	176
14	Bromus tectorum	Downy Brome (Cheatgrass)	Spain		1990	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	190
15	Bromus tectorum	Downy Brome (Cheatgrass)	Spain		1990	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	191
16	Alopecurus myosuroides	Blackgrass	Spain		1991	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	188
17	Polygonum lapathifolium	Pale Smartweed	Spain		1991	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	189
18	Echinochloa crus-galli var. crus-galli	Barnyardgrass	Spain		1992	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	171
19	Lolium rigidum	Rigid Ryegrass	Spain		1992	38	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) PSII inhibitors - Serine 264 Binders (C1 C2/5)	172
20	Lolium rigidum	Rigid Ryegrass	Spain		1992	38	Inhibition of Acetyl CoA Carboxylase (A/1)	173
21	Lolium rigidum	Rigid Ryegrass	Spain		1992	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	174
22	Setaria verticillata	Bristly Foxtail	Spain		1992	38	PSII inhibitors - Serine 264 Binders (C1 C2/5)	436
23	Papaver rhoeas	Corn Poppy	Spain		1993	38	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Auxin Mimics (O/4)	185
24	Alisma plantago-aquatica	Common Waterplantain	Spain		2000	38	Inhibition of Acetolactate Synthase (B/2)	5138
25	Cyperus difformis	Smallflower Umbrella Sedge	Spain		2000	38	Inhibition of Acetolactate Synthase (B/2)	5140
26	Conyza bonariensis	Hairy Fleabane	Spain		2004	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5223
27	Conyza canadensis	Horseweed	Spain		2006	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5319
28	Lolium perenne ssp. multiflorum	Italian Ryegrass	Spain		2006	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5331
29	Lolium rigidum	Rigid Ryegrass	Spain		2006	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5332
30	Sinapis alba	White Mustard	Spain		2007	38	Inhibition of Acetolactate Synthase (B/2)	5368
31	Conyza sumatrensis	Sumatran Fleabane	Spain		2009	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	5481
32	Sinapis arvensis	Wild Mustard	Spain		2011	38	Inhibition of Acetolactate Synthase (B/2)	5591
33	Sorghum halepense	Johnsongrass	Spain		2015	38	Inhibition of Acetolactate Synthase (B/2)	11000
34	Alopecurus myosuroides	Blackgrass	Spain		2015	38	Multiple Resistance: 3 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2) PSII inhibitors - Serine 264 Binders (C1 C2/5)	11014
35	Echinochloa crus-galli var. crus-galli	Barnyardgrass	Spain		2015	38	Inhibition of Acetolactate Synthase (B/2)	11016
36	Lolium rigidum	Rigid Ryegrass	Spain		2015	38	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	31272
37	Lolium rigidum	Rigid Ryegrass	Spain		2016	38	Multiple Resistance: 2 Sites of Action Inhibition of Protoporphyrinogen Oxidase (E/14) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	17105
38	Amaranthus palmeri	Palmer Amaranth	Spain		2016	38	Inhibition of Acetolactate Synthase (B/2)	18204
39	Rapistrum rugosum	Turnipweed	Spain		2018	38	Inhibition of Acetolactate Synthase (B/2)	18171
40	Hordeum murinum ssp. leporinum	Hare Barley	Spain		2018	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	18192
41	Bromus madritensis	Compact Brome	Spain		2018	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	18209
42	Bromus rubens	Red Brome	Spain		2018	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	18210
43	Kochia scoparia	Kochia	Spain		2022	38	Multiple Resistance: 3 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) Auxin Mimics (O/4)	31275
44	Panicum dichotomiflorum	Fall Panicum	Spain		2022	38	Inhibition of Acetolactate Synthase (B/2)	31276
45	Avena sterilis	Sterile Oat	Spain		2023	38	Inhibition of Acetyl CoA Carboxylase (A/1)	27282
46	Amaranthus palmeri	Palmer Amaranth	Spain		2023	38	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	27292
47	Chloris truncata	Windmill Grass	Spain		2023	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	27293

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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Monday, November 3, 2025 .  Available  www.weedscience.org
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