| 
                        1
                     | Argentina | Argentina |   | 2007 | 
                        Cereals
                     | 
                        glyphosate
                     | 48 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5352 | 
	
		| 
                        2
                     | Argentina | Argentina |   | 2009 | 
                        
                     | 
                        diclofop-methyl
                     | 48 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5586 | 
	
		| 
                        3
                     | Argentina | Argentina |   | 2010 | 
                        Wheat
                     | 
                        clethodim, glyphosate, iodosulfuron-methyl-Na, and pyroxsulam
                     | 48 | 
                        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)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5599 | 
	
		| 
                        4
                     | Brazil | Brazil |   | 2003 | 
                        Orchards, and Soybean
                     | 
                        glyphosate
                     | 5 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5205 | 
	
		| 
                        5
                     | Brazil | Brazil |   | 2010 | 
                        Wheat
                     | 
                        iodosulfuron-methyl-Na
                     | 5 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 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
HRAC Group 2 (Legacy B) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 15063 | 
	
		| 
                        9
                     | Canada (Ontario)  | Canada | Ontario | 2021 | 
                        Hazelnut (filbert)
                     | 
                        glyphosate
                     | 7 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 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
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5105 | 
	
		| 
                        11
                     | Chile | Chile |   | 2001 | 
                        Fruit, and Orchards
                     | 
                        glyphosate
                     | 8 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 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
HRAC Group 2 (Legacy B) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 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
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)  
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5676 | 
	
		| 
                        18
                     | France | France |   | 1993 | 
                        Wheat
                     | 
                        diclofop-methyl
                     | 17 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 17117 | 
	
		| 
                        20
                     | France | France |   | 2018 | 
                        Wheat
                     | 
                        flufenacet
                     | 17 | 
                        Very Long-Chain Fatty Acid Synthesis inhibitorsHRAC Group 15 (Legacy K3 N) 
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 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
HRAC Group 1 (Legacy A) 
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 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
HRAC Group 2 (Legacy B) 
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 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
HRAC Group 2 (Legacy B) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 8903 | 
	
		| 
                        27
                     | Japan | Japan |   | 2011 | 
                        Rice Paddy Levee
                     | 
                        glyphosate
                     | 25 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7770 | 
	
		| 
                        28
                     | New Zealand | New Zealand |   | 2012 | 
                        Grapes
                     | 
                        glyphosate
                     | 30 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 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
HRAC Group 1 (Legacy A) 
                     | 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
HRAC Group 34 (Legacy F3) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) Inhibition of Glutamine Synthetase
HRAC Group 10 (Legacy H)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 14056 | 
	
		| 
                        31
                     | Portugal | Portugal |   | 2019 | 
                        Grapes
                     | 
                        glyphosate
                     | 34 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 28266 | 
	
		| 
                        32
                     | Spain | Spain |   | 2006 | 
                        Orchards
                     | 
                        glyphosate
                     | 38 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5331 | 
	
		| 
                        33
                     | Switzerland | Switzerland |   | 2011 | 
                        Orchards
                     | 
                        glyphosate
                     | 41 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 11007 | 
	
		| 
                        34
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 20226 | 
	
		| 
                        35
                     | Switzerland | Switzerland |   | 2018 | 
                        Peas
                     | 
                        chlorotoluron, iodosulfuron-methyl-Na, and mesosulfuron-methyl
                     | 41 | 
                        Multiple Resistance: 2 Sites of Action   Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) PSII inhibitors - Serine 264 Binders
HRAC Group 5 (Legacy C1 C2)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 20227 | 
	
		| 
                        36
                     | 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
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)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 24249 | 
	
		| 
                        37
                     | United Kingdom | United Kingdom |   | 1990 | 
                        Canola, Cereals, and Wheat
                     | 
                        cycloxydim, diclofop-methyl, fluazifop-butyl, pinoxaden, and tralkoxydim
                     | 44 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 356 | 
	
		| 
                        38
                     | United Kingdom | United Kingdom |   | 1990 | 
                        Wheat
                     | 
                        isoproturon
                     | 44 | 
                        PSII inhibitors - Serine 264 Binders
HRAC Group 5 (Legacy C1 C2) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5080 | 
	
		| 
                        39
                     | United Kingdom | United Kingdom |   | 2012 | 
                        Cereals
                     | 
                        mesosulfuron-methyl, and pyroxsulam
                     | 44 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 10968 | 
	
		| 
                        40
                     | United Kingdom | United Kingdom |   | 2018 | 
                        Wheat
                     | 
                        flufenacet
                     | 44 | 
                        Very Long-Chain Fatty Acid Synthesis inhibitorsHRAC Group 15 (Legacy K3 N) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 17153 | 
	
		| 
                        41
                     | United States (Oregon)  | United States | Oregon | 1987 | 
                        Wheat
                     | 
                        diclofop-methyl
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 320 | 
	
		| 
                        42
                     | United States (North Carolina)  | United States | North Carolina | 1990 | 
                        Wheat
                     | 
                        diclofop-methyl, and sethoxydim
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 259 | 
	
		| 
                        43
                     | United States (South Carolina)  | United States | South Carolina | 1990 | 
                        Wheat
                     | 
                        diclofop-methyl
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 268 | 
	
		| 
                        44
                     | 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
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 519 | 
	
		| 
                        45
                     | United States (Virginia)  | United States | Virginia | 1993 | 
                        Wheat
                     | 
                        diclofop-methyl
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 275 | 
	
		| 
                        46
                     | United States (Mississippi)  | United States | Mississippi | 1995 | 
                        Roadsides
                     | 
                        sulfometuron-methyl
                     | 45 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 526 | 
	
		| 
                        47
                     | United States (Georgia)  | United States | Georgia | 1995 | 
                        Canola, and Wheat
                     | 
                        diclofop-methyl, and sethoxydim
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 543 | 
	
		| 
                        48
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 1097 | 
	
		| 
                        49
                     | United States (Maryland)  | United States | Maryland | 1998 | 
                        Wheat
                     | 
                        diclofop-methyl
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 1084 | 
	
		| 
                        50
                     | United States (Arkansas)  | United States | Arkansas | 2003 | 
                        Wheat
                     | 
                        chlorsulfuron, imazamox, mesosulfuron-methyl, and sulfometuron-methyl
                     | 45 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5399 | 
	
		| 
                        51
                     | United States (Oregon)  | United States | Oregon | 2004 | 
                        Orchards
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5249 | 
	
		| 
                        52
                     | United States (Kentucky)  | United States | Kentucky | 2004 | 
                        Wheat
                     | 
                        diclofop-methyl
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7877 | 
	
		| 
                        53
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) Very Long-Chain Fatty Acid Synthesis inhibitorsHRAC Group 15 (Legacy K3 N)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5280 | 
	
		| 
                        54
                     | United States (Mississippi)  | United States | Mississippi | 2005 | 
                        Cotton, and Soybean
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5309 | 
	
		| 
                        55
                     | United States (Arkansas)  | United States | Arkansas | 2005 | 
                        Wheat
                     | 
                        clodinafop-propargyl, diclofop-methyl, and pinoxaden
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5409 | 
	
		| 
                        56
                     | United States (Tennessee)  | United States | Tennessee | 2006 | 
                        Winter wheat
                     | 
                        diclofop-methyl
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5316 | 
	
		| 
                        57
                     | United States (North Carolina)  | United States | North Carolina | 2007 | 
                        Wheat
                     | 
                        mesosulfuron-methyl
                     | 45 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7818 | 
	
		| 
                        58
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7856 | 
	
		| 
                        59
                     | United States (Arkansas)  | United States | Arkansas | 2008 | 
                        Wheat
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5401 | 
	
		| 
                        60
                     | United States (California)  | United States | California | 2008 | 
                        Orchards, and Roadsides
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5698 | 
	
		| 
                        61
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5500 | 
	
		| 
                        62
                     | United States (North Carolina)  | United States | North Carolina | 2009 | 
                        Corn (maize), Cotton, and Soybean
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7811 | 
	
		| 
                        63
                     | 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
HRAC Group 9 (Legacy G) Inhibition of Glutamine Synthetase
HRAC Group 10 (Legacy H)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5564 | 
	
		| 
                        64
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7782 | 
	
		| 
                        65
                     | United States (Delaware)  | United States | Delaware | 2012 | 
                        Wheat
                     | 
                        mesosulfuron-methyl
                     | 45 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 5709 | 
	
		| 
                        66
                     | United States (Tennessee)  | United States | Tennessee | 2012 | 
                        Corn (maize)
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 6753 | 
	
		| 
                        67
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7809 | 
	
		| 
                        68
                     | United States (Kentucky)  | United States | Kentucky | 2013 | 
                        Wheat
                     | 
                        mesosulfuron-methyl, and pyroxsulam
                     | 45 | 
                        Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 7891 | 
	
		| 
                        69
                     | United States (Louisiana)  | United States | Louisiana | 2014 | 
                        Corn (maize), Cotton, and Soybean
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 8898 | 
	
		| 
                        70
                     | United States (California)  | United States | California | 2015 | 
                        Grapes, and Orchards
                     | 
                        glufosinate-ammonium
                     | 45 | 
                        Inhibition of Glutamine Synthetase
HRAC Group 10 (Legacy H) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 13044 | 
	
		| 
                        71
                     | 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
HRAC Group 1 (Legacy A) PS I Electron Diversion
HRAC Group 22 (Legacy D) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 15066 | 
	
		| 
                        72
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) PS I Electron Diversion
HRAC Group 22 (Legacy D) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 17104 | 
	
		| 
                        73
                     | United States (Oklahoma)  | United States | Oklahoma | 2017 | 
                        Wheat
                     | 
                        pinoxaden
                     | 45 | 
                        Inhibition of Acetyl CoA Carboxylase
HRAC Group 1 (Legacy A) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 18167 | 
	
		| 
                        74
                     | United States (Oregon)  | United States | Oregon | 2018 | 
                        Wheat
                     | 
                        flufenacet
                     | 45 | 
                        Very Long-Chain Fatty Acid Synthesis inhibitorsHRAC Group 15 (Legacy K3 N) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 17151 | 
	
		| 
                        75
                     | United States (Washington)  | United States | Washington | 2018 | 
                        Wheat
                     | 
                        flufenacet
                     | 45 | 
                        Very Long-Chain Fatty Acid Synthesis inhibitorsHRAC Group 15 (Legacy K3 N) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 17154 | 
	
		| 
                        76
                     | 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
HRAC Group 1 (Legacy A) Inhibition of Acetolactate Synthase
HRAC Group 2 (Legacy B) PS I Electron Diversion
HRAC Group 22 (Legacy D) Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)  
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 24251 | 
	
		| 
                        77
                     | United States (New York)  | United States | New York | 2023 | 
                        Wheat
                     | 
                        glyphosate
                     | 45 | 
                        Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G) 
                     | 110 | Lolium perenne ssp. multiflorum | Italian Ryegrass | 32273 |