INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Herbicide Resistant Saramollagrass Globally
(Ischaemum rugosum)
Herbicide Resistant Saramollagrass Globally
(Ischaemum rugosum)
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Herbicide Resistant Saramollagrass Globally
(Ischaemum rugosum)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 2024 Rice imazapic, and imazapyr 5 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		99Ischaemum rugosumSaramollagrass33276
2 ColombiaColombia 2000 Rice fenoxaprop-ethyl 10 Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
 		99Ischaemum rugosumSaramollagrass5143
3 ColombiaColombia 2009 Rice bispyribac-sodium 10 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		99Ischaemum rugosumSaramollagrass18166
4 Dominican RepublicDominican Republic 2024 Rice bispyribac-sodium, clethodim, cyhalofop-butyl, diclofop-methyl, imazamox, penoxsulam, and propanil 96 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)
 		99Ischaemum rugosumSaramollagrass36290
5 MalaysiaMalaysia 1989 Rubber, and Vegetables paraquat 28 PS I Electron Diversion HRAC Group 22 (Legacy D)
 		99Ischaemum rugosumSaramollagrass139
6 VenezuelaVenezuela 2004 Rice bispyribac-sodium, fenoxaprop-ethyl, imazapyr, imazethapyr, profoxydim, propanil, and pyribenzoxim 80 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)
 		99Ischaemum rugosumSaramollagrass5552
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Sunday, October 4, 2026.  Available at  www.weedscience.org

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