INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Johnsongrass Globally
(Sorghum halepense)
Herbicide Resistant Johnsongrass Globally
(Sorghum halepense)
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Herbicide Resistant Johnsongrass Globally
(Sorghum halepense)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ArgentinaArgentina 2005 Soybean glyphosate 48 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Sorghum halepenseJohnsongrass5271
2 ArgentinaArgentina 2015 Soybean haloxyfop-methyl 48 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass10979
3 ArgentinaArgentina 2015 Soybean clethodim, glyphosate, and haloxyfop-methyl 48 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)
 		166Sorghum halepenseJohnsongrass10991
4 Australia (Queensland) AustraliaQueensland2019 Fallow glyphosate 1 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Sorghum halepenseJohnsongrass18193
5 ChileChile 2009 Corn (maize) nicosulfuron 8 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass5693
6 GreeceGreece 2005 Cotton propaquizafop, and quizalofop-ethyl 19 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass5393
7 HungaryHungary 2015 Corn (maize), and Fallow foramsulfuron, and nicosulfuron 20 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass17119
8 IsraelIsrael 2006 Carrots, Cotton, Onions, and Peanut (groundnut) clethodim, fluazifop-butyl, and haloxyfop-methyl 23 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass5301
9 IsraelIsrael 2017 Cotton, and Watermelon rimsulfuron 23 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass18159
10 ItalyItaly 2005 Soybean, and Tomatoes fluazifop-butyl, haloxyfop-methyl, propaquizafop, and quizalofop-ethyl 24 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass5354
11 ItalyItaly 2007 Corn (maize) nicosulfuron 24 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass8905
12 MexicoMexico 2009 Corn (maize) foramsulfuron, nicosulfuron, primisulfuron-methyl, and rimsulfuron 29 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass5475
13 SerbiaSerbia 2014 Corn (maize) imazamox, nicosulfuron, propoxycarbazone-Na, pyroxsulam, and rimsulfuron 245 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass15065
14 SerbiaSerbia 2017 Soybean fenoxaprop-ethyl, fluazifop-butyl, haloxyfop-methyl, propaquizafop, and quizalofop-ethyl 245 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass17146
15 SerbiaSerbia 2018 Soybean fluazifop-butyl, and nicosulfuron 245 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)
 		166Sorghum halepenseJohnsongrass20225
16 SpainSpain 2015 Corn (maize) nicosulfuron 38 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass11000
17 United States (Mississippi) United StatesMississippi1991 Cotton, and Cropland fenoxaprop-ethyl, fluazifop-butyl, and quizalofop-ethyl 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass250
18 United States (Kentucky) United StatesKentucky1991 Soybean fluazifop-butyl 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass488
19 United States (Mississippi) United StatesMississippi1992 Cotton pendimethalin 45 Inhibition of Microtubule AssemblyHRAC Group 3 (Legacy K1)
 		166Sorghum halepenseJohnsongrass328
20 United States (Tennessee) United StatesTennessee1995 Cotton, and Soybean fluazifop-butyl, and quizalofop-ethyl 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass1106
21 United States (Virginia) United StatesVirginia1995 Soybean sethoxydim 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass1108
22 United States (Louisiana) United StatesLouisiana1997 Cotton clethodim, and fluazifop-butyl 45 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		166Sorghum halepenseJohnsongrass1044
23 United States (Texas) United StatesTexas2000 Corn (maize) imazethapyr, and nicosulfuron 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass5091
24 United States (West Virginia) United StatesWest Virginia2004 Corn (maize) nicosulfuron 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass7775
25 United States (Indiana) United StatesIndiana2005 Corn (maize), and Soybean nicosulfuron 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass5282
26 United States (Kentucky) United StatesKentucky2006 Corn (maize) foramsulfuron, nicosulfuron, and primisulfuron-methyl 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass7880
27 United States (Arkansas) United StatesArkansas2007 Soybean glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Sorghum halepenseJohnsongrass5344
28 United States (Mississippi) United StatesMississippi2008 Soybean glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Sorghum halepenseJohnsongrass5558
29 United States (Louisiana) United StatesLouisiana2010 Soybean glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Sorghum halepenseJohnsongrass5522
30 United States (Missouri) United StatesMissouri2019 Soybean glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		166Sorghum halepenseJohnsongrass23238
31 VenezuelaVenezuela 2010 Corn (maize) foramsulfuron, iodosulfuron-methyl-Na, and nicosulfuron 80 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		166Sorghum halepenseJohnsongrass5553
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