International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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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 (B/2)
99Ischaemum rugosumSaramollagrass33276
2 ColombiaColombia 2000 Rice fenoxaprop-ethyl 10 Inhibition of Acetyl CoA Carboxylase (A/1)
99Ischaemum rugosumSaramollagrass5143
3 ColombiaColombia 2009 Rice bispyribac-sodium 10 Inhibition of Acetolactate Synthase (B/2)
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 (A/1)
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
99Ischaemum rugosumSaramollagrass36290
5 MalaysiaMalaysia 1989 Rubber, and Vegetables paraquat 28 PS I Electron Diversion (D/22)
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 (A/1)
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
99Ischaemum rugosumSaramollagrass5552
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Tuesday, September 22, 2026 .  Available  www.weedscience.org
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