INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Silky Windgrass Globally
(Apera spica-venti)
Herbicide Resistant Silky Windgrass Globally
(Apera spica-venti)
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Herbicide Resistant Silky Windgrass Globally
(Apera spica-venti)
#CountryFirstYearSituationActive IngredientsSite of Action
1 AustriaAustria 2009 Cereals iodosulfuron-methyl-Na, and isoproturon 2 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)
 		20Apera spica-ventiSilky Windgrass6746
2 BelgiumBelgium 2019 Wheat foramsulfuron, iodosulfuron-methyl-Na, and mesosulfuron-methyl 3 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass18199
3 Czech RepublicCzech Republic 2005 Cereals, and Winter wheat chlorsulfuron, iodosulfuron-methyl-Na, isoproturon, mesosulfuron-methyl, pyroxsulam, and sulfosulfuron 12 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)
 		20Apera spica-ventiSilky Windgrass5266
4 DenmarkDenmark 2011 Winter wheat iodosulfuron-methyl-Na, and sulfosulfuron 13 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass5674
5 DenmarkDenmark 2016 Wheat fenoxaprop-ethyl, florasulam, iodosulfuron-methyl-Na, mesosulfuron-methyl, and pinoxaden 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)
 		20Apera spica-ventiSilky Windgrass15078
6 FranceFrance 2006 Wheat iodosulfuron-methyl-Na, mesosulfuron-methyl, and pyroxsulam 17 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass9936
7 GermanyGermany 1997 Cereals, and Winter wheat isoproturon 18 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		20Apera spica-ventiSilky Windgrass5026
8 GermanyGermany 2005 Wheat chlorsulfuron, florasulam, flupyrsulfuron-methyl-Na, iodosulfuron-methyl-Na, mesosulfuron-methyl, pyroxsulam, sulfometuron-methyl, and sulfosulfuron 18 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass5526
9 GermanyGermany 2009 Spring Barley, and Winter wheat fenoxaprop-ethyl, iodosulfuron-methyl-Na, isoproturon, mesosulfuron-methyl, pinoxaden, pyroxsulam, and sulfosulfuron 18 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)
 		20Apera spica-ventiSilky Windgrass5410
10 LatviaLatvia 2015 Wheat, and Winter wheat iodosulfuron-methyl-Na 174 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass15067
11 LithuaniaLithuania 2013 Winter wheat iodosulfuron-methyl-Na 185 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass7821
12 PolandPoland 2005 Winter wheat chlorsulfuron, iodosulfuron-methyl-Na, procarbazone-Na, and sulfosulfuron 33 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass5395
13 PolandPoland 2010 Winter wheat fenoxaprop-ethyl, and pinoxaden 33 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		20Apera spica-ventiSilky Windgrass5619
14 PolandPoland 2011 Winter wheat chlorsulfuron, fenoxaprop-ethyl, pinoxaden, sulfometuron-methyl, and sulfosulfuron 33 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)
 		20Apera spica-ventiSilky Windgrass6758
15 PolandPoland 2012 Winter wheat isoproturon 33 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		20Apera spica-ventiSilky Windgrass6759
16 SwedenSweden 2006 Winter wheat isoproturon 40 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		20Apera spica-ventiSilky Windgrass10996
17 SwedenSweden 2010 Winter wheat iodosulfuron-methyl-Na, pyroxsulam, and sulfosulfuron 40 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		20Apera spica-ventiSilky Windgrass10994
18 SwitzerlandSwitzerland 1994 Wheat isoproturon 41 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		20Apera spica-ventiSilky Windgrass208
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