select Select by Species Abutilon theophrasti Acalypha australis Ageratum conyzoides Agrostis stolonifera Alisma canaliculatum Alisma plantago-aquatica Alopecurus aequalis Alopecurus japonicus Alopecurus myosuroides Amaranthus albus Amaranthus blitoides Amaranthus blitum (ssp. oleraceus) Amaranthus cruentus Amaranthus hybridus (syn: quitensis) Amaranthus palmeri Amaranthus powellii Amaranthus retroflexus Amaranthus spinosus Amaranthus tuberculatus (=A. rudis) Amaranthus viridis Ambrosia artemisiifolia Ambrosia trifida Ammannia auriculata Ammannia coccinea Ammannia multiflora Anthemis arvensis Anthemis cotula Anthriscus caucalis Apera spica-venti Arabidopsis thaliana Arctotheca calendula Arenaria serpyllifolia Aster squamatus Atriplex patula Avena fatua Avena sterilis Avena sterilis ssp. ludoviciana Bacopa rotundifolia Beckmannia syzigachne Bidens pilosa Bidens subalternans Bidens tripartita Bifora radians Blyxa aubertii Brachiaria eruciformis Brachypodium distachyon Brassica rapa (=B. campestris) Brassica tournefortii Bromus catharticus Bromus commutatus Bromus diandrus Bromus diandrus ssp. rigidus (=B. rigidus) Bromus japonicus Bromus madritensis Bromus rubens Bromus secalinus Bromus sterilis Bromus tectorum Buglossoides arvensis (=Lithospermum arvense) Camelina microcarpa Capsella bursa-pastoris Carduus acanthoides Carduus nutans Carduus pycnocephalus Centaurea cyanus Centaurea solstitialis Centaurea stoebe ssp. micranthos Chamaesyce maculata Chenopodium album Chenopodium album var. striatum (=C. strictum var. glaucophyllum) Chenopodium ficifolium Chenopodium polyspermum Chenopodium simplex (=C. hybridum) Chloris barbata = (C. inflate) Chloris elata Chloris radiata Chloris truncata Chloris virgata Chrysanthemum coronarium Cirsium arvense Clidemia hirta Commelina diffusa Convolvulus arvensis Conyza bonariensis Conyza canadensis Conyza sumatrensis Crassocephalum crepidioides Crepis tectorum Crypsis schoenoides Cuphea carthagenensis Cuscuta pentagona (=C. campestris) Cynodon hirsutus Cynosurus echinatus Cyperus brevifolius Cyperus compressus Cyperus difformis Cyperus esculentus Cyperus iria Cyperus odoratus Damasonium minus Datura stramonium Daucus carota Descurainia sophia Digitaria ciliaris Digitaria insularis Digitaria ischaemum Digitaria sanguinalis Diplotaxis erucoides Diplotaxis tenuifolia Dopatrium junceum Echinochloa colona Echinochloa crus-galli var. crus-galli Echinochloa crus-galli var. formosensis Echinochloa crus-galli var. zelayensis Echinochloa crus-pavonis Echinochloa erecta Echinochloa oryzoides Echinochloa phyllopogon (=E. oryzicola) Echium plantagineum Ehrharta longiflora Elatine triandra var. pedicellata Eleocharis acicularis Eleusine indica Epilobium ciliatum Epilobium tetragonum Erigeron philadelphicus Eriochloa punctata Erucaria hispanica Erysimum repandum Euphorbia heterophylla Fimbristylis miliacea Fumaria densiflora Galeopsis tetrahit Galinsoga ciliata Galinsoga parviflora Galium aparine Galium spurium Galium tricornutum Gamochaeta pensylvanica Hedyotis verticillata Helianthus annuus Hirschfeldia incana Hordeum jubatum Hordeum murinum ssp. glaucum Hordeum murinum ssp. leporinum Hydrilla verticillata Ischaemum rugosum Iva xanthiifolia Ixophorus unisetus Kochia scoparia Lactuca saligna Lactuca serriola Lamium amplexicaule Landoltia punctata Lepidium virginicum Leptochloa chinensis Leptochloa fusca spp. fasicularis Leptochloa panicoides Leptochloa scabra Leptochloa virgata Limnocharis flava Limnophila erecta Limnophila sessiliflora Lindernia dubia (=Lindernia dubia var. major) Lindernia micrantha Lindernia procumbens Lithospermum arvense Lolium perenne Lolium perenne ssp. multiflorum Lolium persicum Lolium rigidum Ludwigia prostrata Matricaria discoidea Matricaria recutita (= M. chamomilla) Mazus fauriei Mazus pumilus Mesembryanthemum crystallinum Mitracarpus hirtus Monochoria korsakowii Monochoria vaginalis Myosoton aquaticum Nassella neesiana Nassella trichotoma Neslia paniculata Oryza sativa var. sylvatica Panicum capillare Panicum dichotomiflorum Panicum miliaceum var. ruderale Kitag. Papaver rhoeas Parthenium hysterophorus Paspalum paniculatum Pentzia suffruticosa Phalaris brachystachys Phalaris minor Phalaris paradoxa Picris hieracioides Plantago lagopus Plantago lanceolata Poa annua Poa trivialis Polygonum aviculare Polygonum convolvulus (=Fallopia convolvulus) Polygonum hydropiper Polygonum lapathifolium Polygonum pensylvanicum Polygonum persicaria Polypogon fugax Polypogon monspeliensis Portulaca oleracea Ranunculus acris Raphanus raphanistrum Raphanus sativus Rapistrum rugosum Rorippa indica Rostraria smyrnacea (=Lophochloa smyrnacea) Rotala indica var. uliginosa Rotala pusilla Rottboellia cochinchinensis (=R. exaltata) Rumex acetosella Rumex dentatus Rumex obtusifolius Sagittaria guayanensis Sagittaria montevidensis Sagittaria pygmaea Sagittaria trifolia Salsola tragus Schoenoplectus fluviatilis Schoenoplectus juncoides Schoenoplectus mucronatus (=Scirpus mucronatus) Schoenoplectus wallichii Sclerochloa dura Sclerochloa kengiana Secale cereale Senecio vernalis Senecio vulgaris Setaria faberi Setaria pumila (=S. glauca) Setaria verticillata Setaria viridis Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea) Sida spinosa Silene gallica Sinapis alba Sinapis arvensis Sisymbrium orientale Sisymbrium thellungii Snowdenia polystachya Solanum americanum Solanum nigrum Solanum ptycanthum Soliva sessilis Sonchus asper Sonchus oleraceus Sorghum bicolor Sorghum bicolor ssp. drummondii (=Sorghum sudanese) Sorghum halepense Spergula arvensis Sphenoclea zeylanica Sporobolus fertilis Steinchisma laxum Stellaria media Thlaspi arvense Tridax procumbens Tripleurospermum perforatum (=T. inodorum) Urochloa panicoides Urochloa plantaginea (=Brachiaria plantaginea) Urtica urens Vaccaria hispanica Vicia sativa Vulpia bromoides Xanthium strumarium Youngia japonica Zea mays ssp. mexicana

select Select by Common Name African Mustard African Turnipweed Alexandergrass Amazon Sprangletop American Black Nightshade American Sloughgrass Annual Bluegrass Annual Falsebrome Annual Sedge Annual Sowthistle Arrocillo Arrowleafed Monochoria Asia Minor bluegrass Asian Copperleaf Asian Mazus Asiatic Hawksbeard Azetogarashi (Japanese) Ball Mustard Barnyardgrass Bearded Sprangletop Birdsrape Mustard Black Nightshade Blackgrass Bristly Foxtail Broad-Leaved Dock Buckhorn Plantain Bur Beggarticks Bur Chervil Burning Nettle Bushy Wallflower California Arrowhead Calomba daisy Canada thistle Capeweed Catchweed Bedstraw Catstail Cheat (Rye Brome) Chilean or Uruguayan Needlegrass Chinese Sprangletop Coat Buttons Common Chickweed Common cocklebur Common False-pimpernel; Azena (Japanese) Common Groundsel Common Hempnettle Common Lambsquarters Common Purslane Common Ragweed Common Sunflower Common Vetch Common Waterplantain Compact Brome Corn Chamomile Corn Gromwell Corn Gromwell Corn Poppy Corn Spurry Cornflower Cowcockle Creeping Bentgrass Crown daisy Crystalline Iceplant Dense-flowered Fumitory Disc Waterhyssop Dopatrium Dotted Duckweed Downy Brome (Cheatgrass) Dwarf Arrowhead Eared Redstem Early Watergrass Eastern Black Nightshade Eastern Groundsel English Catchfly Ethiopian grass Fall Panicum False Cleavers False Loosestrife Feather Fingergrass Feral Rye Field Bindweed Field Dodder Field Pennycress Figleaved Goosefoot Flixweed Foxtail Barley Fragrant Flatsedge Fringed Willowherb Gallant Soldier Giant Foxtail Giant Goosefoot Giant Green Foxtail Giant Parramatta grass Giant Ragweed Globe Fringerush Goosegrass Gooseweed Gramilla mansa Greater Beggarticks Green Foxtail Gulf Cockspur Gulf Cockspur Grass Guyanese Arrowhead Hairy Beggarticks Hairy Fleabane Hairy Galinsoga Halberdleaf Orach Hardgrass Hare Barley Hare's Foot Plantain Hawkweed Oxtongue Hedgehog Dogtailgrass Henbit Deadnettle Hera-omodaka Hood Canarygrass Horseweed Hydrilla Italian Ryegrass Italian Thistle Itchgrass Japanese Brome Japanese Foxtail Japanese Mazus Jimsonweed Johnsongrass Junglerice Keng Stiffgrass Kikashigusa Kochia Ladysthumb Large Crabgrass Late Watergrass Lateflowering Goosefoot Lawn Burweed Lax Panicgrass Limnophila (Asian marshweed) Little seed Canary grass Liverseedgrass Livid Amaranth Longflowered veldtgrass Low False-pimpernel Many Flowered Ammannia Manyseeded Goosefoot Marshelder Marshpepper Smartweed Marshweed Mayweed Chamomile Meadow Brome Mexican teosinte Mizohakobe (Waterwort) Mizuaoi (JPN)/Moolokzam (KOR) Mizu-matsuba Mouse-ear Cress Musk Thistle Narrowleaf Hawksbeard Needle Spikerush Oriental Mustard Pale Smartweed Palmer Amaranth Pasto Amargo Pasto Honduras (Mexicangrass) Patersons Curse Pennsylvania Everlasting Pennsylvania Smartweed Perennial Ryegrass Perennial Wallrocket Persian Darnel Philadelphia Fleabane Pineapple-weed Plumeless Thistle Pollacci Barnyardgrass Poverty Brome Powell Amaranth Prickly Lettuce Prickly Sida Prostrate Knotweed Prostrate Pigweed Rabbitfoot Polypogon Radiate Fingergrass Radish Ragweed Parthenium Red Amaranth Red Brome Red Rice Redflower Ragleaf Redroot Pigweed Redstem Rescuegrass Rice Flatsedge Ricefield Bulrush Rigid Brome Rigid Ryegrass Ripgut Brome River Bulrush Rock Bulrush Rough Sprangletop Roughstalk Bluegrass Roundfruit Blyxa Russian-thistle Saltmarsh Aster Saramollagrass Sawah Flowering Rush Scentless Chamomile Serrated Tussock Shattercane Sheep Sorrel Shepherd's-purse Shortawn Foxtail Shortleaf Spikesedge Shortpod Mustard Shortspike Canarygrass Silky Windgrass Slender Amaranth Smallflower Umbrella Sedge Smallseed Flaxfalse Smooth Barley Smooth Crabgrass Smooth Pigweed Soapbush Sourgrass Southern Crabgrass Spanish Pink Mustard Spiny Amaranth Spiny Sowthistle Spotted knapweed Spotted Spurge Spreading Dayflower Square-stalked Willowherb Squirreltail Fescue Starfruit Sterile Oat Sterile oat Sudangrass Sumatran Fleabane Swamp Pricklegrass Sweet Summer Grass Swollen Fingergrass Taiwan barnyardgrass Taiwan-yamai Tall Buttercup Tall Waterhemp Tall Windmill Grass Tarweed Cuphea Threehorn Bedstraw Threeleaf Arrowhead Thymeleaf Sandwort Toothed Dock Tropical Girdlepod Tropical Sprangletop (Juddsgrass) Tropical Whiteweed Tumble Pigweed Turnipweed Variableleaf Yellowcress Velvetleaf Virginia Pepperweed Water Starwort White Mustard White Wallrocket Wild Bishop Wild Buckwheat Wild Carrot Wild Chamomile Wild Mustard Wild Oat Wild Panicgrass Wild Poinsettia Wild Radish Willow-leaved lettuce Windmill Grass Witchgrass Woody borreria Yellow Foxtail Yellow Nutsedge Yellow Starthistle

Herbicide Resistant Italian Ryegrass Globally (Lolium perenne ssp. multiflorum)
Herbicide Resistant Italian Ryegrass Globally (Lolium perenne ssp. multiflorum) Drag a column header and drop it here to group by that column

Herbicide Resistant Italian Ryegrass Globally (Lolium perenne ssp. multiflorum)

#	Country	Country	StateName	FirstYear	Situation	Active Ingredients	CountryID	Site of Action	WeedID	Species	CommonName	ResistID
1	Argentina	Argentina		2007	Cereals	glyphosate	48	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5352
2	Argentina	Argentina		2009		diclofop-methyl	48	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5586
3	Argentina	Argentina		2010	Wheat	glyphosate, iodosulfuron-methyl-Na, and pyroxsulam	48	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5599
4	Brazil	Brazil		2003	Orchards, and Soybean	glyphosate	5	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5205
5	Brazil	Brazil		2010	Wheat	iodosulfuron-methyl-Na	5	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5546
6	Brazil	Brazil		2010	Corn (maize), Soybean, and Wheat	clethodim, and glyphosate	5	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5547
7	Brazil	Brazil		2016	Wheat	clethodim, and iodosulfuron-methyl-Na	5	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	15057
8	Brazil	Brazil		2017	Corn (maize), Soybean, and Wheat	glyphosate, iodosulfuron-methyl-Na, and pyroxsulam	5	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	15063
9	Canada (Ontario)	Canada	Ontario	2021	Hazelnut (filbert)	glyphosate	7	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	22236
10	Chile	Chile		1998	Canola, Lupins, and Wheat	clodinafop-propargyl, diclofop-methyl, and haloxyfop-methyl	8	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5105
11	Chile	Chile		2001	Fruit, and Orchards	glyphosate	8	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5096
12	Chile	Chile		2002	Wheat	flucarbazone-Na, glyphosate, glyphosate-trimesium, and iodosulfuron-methyl-Na	8	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5371
13	Chile	Chile		2005	Canola, Lupins, and Wheat	clethodim, clodinafop-propargyl, diclofop-methyl, flucarbazone-Na, iodosulfuron-methyl-Na, pinoxaden, and tepraloxydim	8	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5424
14	Chile	Chile		2006	Lupins	clethodim, clodinafop-propargyl, diclofop-methyl, glyphosate, haloxyfop-methyl, and pinoxaden	8	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5445
15	Chile	Chile		2007	Spring Barley	clethodim, flucarbazone-Na, glyphosate, haloxyfop-methyl, iodosulfuron-methyl-Na, pinoxaden, and tepraloxydim	8	Multiple Resistance: 3 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5452
16	China	China		2022	Wheat	clodinafop-propargyl, fenoxaprop-ethyl, flucarbazone-Na, pinoxaden, and pyroxsulam	9	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	27266
17	Denmark	Denmark		2010	Winter wheat	clodinafop-propargyl, florasulam, iodosulfuron-methyl-Na, mesosulfuron-methyl, and pyroxsulam	13	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5676
18	France	France		1993	Wheat	diclofop-methyl	17	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	549
19	France	France		2003	Wheat	clodinafop-propargyl, diclofop-methyl, flupyrsulfuron-methyl-Na, haloxyfop-methyl, iodosulfuron-methyl-Na, mesosulfuron-methyl, propoxycarbazone-Na, and sethoxydim	17	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	17117
20	France	France		2018	Wheat	flufenacet	17	Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	17152
21	Ireland	Ireland		2021	Wheat	cycloxydim, iodosulfuron-methyl-Na, mesosulfuron-methyl, pinoxaden, and propaquizafop	81	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	21237
22	Italy	Italy		1995	Alfalfa, and Durum wheat	clodinafop-propargyl, cycloxydim, diclofop-methyl, pinoxaden, quizalofop-ethyl, sethoxydim, and tralkoxydim	24	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	8906
23	Italy	Italy		2002	Durum wheat	clodinafop-propargyl, cycloxydim, diclofop-methyl, iodosulfuron-methyl-Na, mesosulfuron-methyl, pinoxaden, sethoxydim, and tralkoxydim	24	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	1134
24	Italy	Italy		2005	Durum wheat	iodosulfuron-methyl-Na, and mesosulfuron-methyl	24	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	8907
25	Italy	Italy		2008	Wheat	clodinafop-propargyl, cycloxydim, glyphosate, and pinoxaden	24	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	8902
26	Italy	Italy		2012	Wheat	glyphosate, iodosulfuron-methyl-Na, and mesosulfuron-methyl	24	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	8903
27	Japan	Japan		2011	Rice Paddy Levee	glyphosate	25	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7770
28	New Zealand	New Zealand		2012	Grapes	glyphosate	30	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	6749
29	New Zealand	New Zealand		2014	Wheat	haloxyfop-methyl, and pinoxaden	30	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	18202
30	New Zealand	New Zealand		2015	Grapes	amitrole, glufosinate-ammonium, and glyphosate	30	Multiple Resistance: 3 Sites of Action Inhibition of Lycopene Cyclase (F3/11) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) Inhibition of Glutamine Synthetase (H/10)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	14056
31	Spain	Spain		2006	Orchards	glyphosate	38	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5331
32	Switzerland	Switzerland		2011	Orchards	glyphosate	41	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	11007
33	Switzerland	Switzerland		2018	Sugar beets, and Triticale	iodosulfuron-methyl-Na, mesosulfuron-methyl, and quizalofop-ethyl	41	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	20226
34	Switzerland	Switzerland		2018	Peas	chlorotoluron, iodosulfuron-methyl-Na, and mesosulfuron-methyl	41	Multiple Resistance: 2 Sites of Action Inhibition of Acetolactate Synthase (B/2) PSII inhibitors - Serine 264 Binders (C1 C2/5)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	20227
35	Switzerland	Switzerland		2020	Peas, Sugar beets, and Triticale	chlorotoluron, iodosulfuron-methyl-Na, mesosulfuron-methyl, and quizalofop-ethyl	41	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)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	24249
36	United Kingdom	United Kingdom		1990	Canola, Cereals, and Wheat	cycloxydim, diclofop-methyl, fluazifop-butyl, pinoxaden, and tralkoxydim	44	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	356
37	United Kingdom	United Kingdom		1990	Wheat	isoproturon	44	PSII inhibitors - Serine 264 Binders (C1 C2/5)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5080
38	United Kingdom	United Kingdom		2012	Cereals	mesosulfuron-methyl, and pyroxsulam	44	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	10968
39	United Kingdom	United Kingdom		2018	Wheat	flufenacet	44	Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	17153
40	United States (Oregon)	United States	Oregon	1987	Wheat	diclofop-methyl	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	320
41	United States (North Carolina)	United States	North Carolina	1990	Wheat	diclofop-methyl, and sethoxydim	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	259
42	United States (South Carolina)	United States	South Carolina	1990	Wheat	diclofop-methyl	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	268
43	United States (Idaho)	United States	Idaho	1991	Canola, Chickpea, Lentils, Peas, and Wheat	clodinafop-propargyl, diclofop-methyl, quizalofop-ethyl, and sethoxydim	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	519
44	United States (Virginia)	United States	Virginia	1993	Wheat	diclofop-methyl	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	275
45	United States (Mississippi)	United States	Mississippi	1995	Roadsides	sulfometuron-methyl	45	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	526
46	United States (Georgia)	United States	Georgia	1995	Canola, and Wheat	diclofop-methyl, and sethoxydim	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	543
47	United States (Arkansas)	United States	Arkansas	1995	Wheat	chlorsulfuron, diclofop-methyl, and fenoxaprop-ethyl	45	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	1097
48	United States (Maryland)	United States	Maryland	1998	Wheat	diclofop-methyl	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	1084
49	United States (Arkansas)	United States	Arkansas	2003	Wheat	chlorsulfuron, imazamox, mesosulfuron-methyl, and sulfometuron-methyl	45	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5399
50	United States (Oregon)	United States	Oregon	2004	Orchards	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5249
51	United States (Kentucky)	United States	Kentucky	2004	Wheat	diclofop-methyl	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7877
52	United States (Idaho)	United States	Idaho	2005	Canola, Chickpea, Lentils, Peas, and Wheat	clethodim, clodinafop-propargyl, diclofop-methyl, flufenacet, quizalofop-ethyl, and triasulfuron	45	Multiple Resistance: 3 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2) Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5280
53	United States (Mississippi)	United States	Mississippi	2005	Cotton, and Soybean	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5309
54	United States (Arkansas)	United States	Arkansas	2005	Wheat	clodinafop-propargyl, diclofop-methyl, and pinoxaden	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5409
55	United States (Tennessee)	United States	Tennessee	2006	Winter wheat	diclofop-methyl	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5316
56	United States (North Carolina)	United States	North Carolina	2007	Wheat	mesosulfuron-methyl	45	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7818
57	United States (North Carolina)	United States	North Carolina	2007	Wheat	diclofop-methyl, imazamox, mesosulfuron-methyl, pinoxaden, and pyroxsulam	45	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7856
58	United States (Arkansas)	United States	Arkansas	2008	Wheat	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5401
59	United States (California)	United States	California	2008	Orchards, and Roadsides	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5698
60	United States (Georgia)	United States	Georgia	2009	Wheat	diclofop-methyl, and mesosulfuron-methyl	45	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5500
61	United States (North Carolina)	United States	North Carolina	2009	Corn (maize), Cotton, and Soybean	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7811
62	United States (Oregon)	United States	Oregon	2010	Orchards	glufosinate-ammonium, and glyphosate	45	Multiple Resistance: 2 Sites of Action Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9) Inhibition of Glutamine Synthetase (H/10)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5564
63	United States (South Carolina)	United States	South Carolina	2010	Wheat	diclofop-methyl, mesosulfuron-methyl, and pyroxsulam	45	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7782
64	United States (Delaware)	United States	Delaware	2012	Wheat	mesosulfuron-methyl	45	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	5709
65	United States (Tennessee)	United States	Tennessee	2012	Corn (maize)	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	6753
66	United States (Missouri)	United States	Missouri	2013	Corn (maize), Soybean, and Wheat	mesosulfuron-methyl, and pinoxaden	45	Multiple Resistance: 2 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7809
67	United States (Kentucky)	United States	Kentucky	2013	Wheat	mesosulfuron-methyl, and pyroxsulam	45	Inhibition of Acetolactate Synthase (B/2)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	7891
68	United States (Louisiana)	United States	Louisiana	2014	Corn (maize), Cotton, and Soybean	glyphosate	45	Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	8898
69	United States (California)	United States	California	2015	Grapes, and Orchards	glufosinate-ammonium	45	Inhibition of Glutamine Synthetase (H/10)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	13044
70	United States (California)	United States	California	2015	Alfalfa, Grapes, and Orchards	glyphosate, paraquat, and sethoxydim	45	Multiple Resistance: 3 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) PS I Electron Diversion (D/22) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	15066
71	United States (California)	United States	California	2016	Alfalfa, and Orchards	clethodim, cyhalofop-butyl, fenoxaprop-ethyl, fluazifop-butyl, glyphosate, imazamox, mesosulfuron-methyl, paraquat, and sethoxydim	45	Multiple Resistance: 4 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2) PS I Electron Diversion (D/22) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	17104
72	United States (Oklahoma)	United States	Oklahoma	2017	Wheat	pinoxaden	45	Inhibition of Acetyl CoA Carboxylase (A/1)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	18167
73	United States (Oregon)	United States	Oregon	2018	Wheat	flufenacet	45	Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	17151
74	United States (Washington)	United States	Washington	2018	Wheat	flufenacet	45	Very Long-Chain Fatty Acid Synthesis inhibitors (K3 N/15)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	17154
75	United States (North Carolina)	United States	North Carolina	2022	Soybean, and Winter wheat	clethodim, glyphosate, nicosulfuron, and paraquat	45	Multiple Resistance: 4 Sites of Action Inhibition of Acetyl CoA Carboxylase (A/1) Inhibition of Acetolactate Synthase (B/2) PS I Electron Diversion (D/22) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)	110	Lolium perenne ssp. multiflorum	Italian Ryegrass	24251

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