INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Spiny Sowthistle Globally
(Sonchus asper)
Herbicide Resistant Spiny Sowthistle Globally
(Sonchus asper)
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Herbicide Resistant Spiny Sowthistle Globally
(Sonchus asper)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Canada (Alberta) CanadaAlberta1996 Pastures, and Spring Barley chlorsulfuron, metsulfuron-methyl, thifensulfuron-methyl, and tribenuron-methyl 7 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		163Sonchus asperSpiny Sowthistle1153
2 FranceFrance 1980 Corn (maize) atrazine 17 PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
 		163Sonchus asperSpiny Sowthistle473
3 FranceFrance 2015 Chicory rimsulfuron 17 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		163Sonchus asperSpiny Sowthistle14058
4 NorwayNorway 2006 Spring Barley, and Spring wheat iodosulfuron-methyl-Na, and tribenuron-methyl 31 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		163Sonchus asperSpiny Sowthistle10976
5 United KingdomUnited Kingdom 2016 Wheat imazamox, metsulfuron-methyl, and thifensulfuron-methyl 44 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		163Sonchus asperSpiny Sowthistle18185
6 United States (Washington) United StatesWashington2000 Lentils, and Wheat imazamox, and thifensulfuron-methyl 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		163Sonchus asperSpiny Sowthistle5186
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