INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Herbicide Resistant Threeleaf Arrowhead Globally
(Sagittaria trifolia)
Herbicide Resistant Threeleaf Arrowhead Globally
(Sagittaria trifolia)
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Herbicide Resistant Threeleaf Arrowhead Globally
(Sagittaria trifolia)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ChinaChina 2014 Rice bensulfuron-methyl, bispyribac-sodium, penoxsulam, and pyribenzoxim 9 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		294Sagittaria trifoliaThreeleaf Arrowhead17139
2 JapanJapan 1997 Rice bensulfuron-methyl 25 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		294Sagittaria trifoliaThreeleaf Arrowhead7765
3 South KoreaSouth Korea 2011 Rice azimsulfuron, bensulfuron-methyl, cinosulfuron, ethoxysulfuron, halosulfuron-methyl, imazosulfuron, and pyrazosulfuron-ethyl 27 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		294Sagittaria trifoliaThreeleaf Arrowhead7851
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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