INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Herbicide Resistant Rice Flatsedge Globally
(Cyperus iria)
Herbicide Resistant Rice Flatsedge Globally
(Cyperus iria)
Drag a column header and drop it here to group by that column
Herbicide Resistant Rice Flatsedge Globally
(Cyperus iria)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 2014 Rice bispyribac-sodium, imazapic, imazethapyr, penoxsulam, and pyrazosulfuron-ethyl 5 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		266Cyperus iriaRice Flatsedge13040
2 United States (Arkansas) United StatesArkansas2010 Rice bispyribac-sodium, halosulfuron-methyl, imazamox, imazethapyr, and penoxsulam 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		266Cyperus iriaRice Flatsedge5560
3 United States (Louisiana) United StatesLouisiana2013 Rice halosulfuron-methyl 45 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		266Cyperus iriaRice Flatsedge7785
4 VenezuelaVenezuela 2015 Rice pyrazosulfuron-ethyl 80 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		266Cyperus iriaRice Flatsedge11015
PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site. Citation:
Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Monday, July 14, 2025 .  Available  www.weedscience.org Copyright © 1993- 2025 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.