INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Herbicide Resistant Ragweed Parthenium Globally
(Parthenium hysterophorus)
Herbicide Resistant Ragweed Parthenium Globally
(Parthenium hysterophorus)
Drag a column header and drop it here to group by that column
Herbicide Resistant Ragweed Parthenium Globally
(Parthenium hysterophorus)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 2004 Soybean chlorimuron-ethyl, cloransulam-methyl, foramsulfuron, imazethapyr, and iodosulfuron-methyl-Na 5 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		124Parthenium hysterophorusRagweed Parthenium5238
2 ColombiaColombia 2004 Fruit glyphosate 10 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		124Parthenium hysterophorusRagweed Parthenium5380
3 MexicoMexico 2017 Oranges glyphosate 29 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		124Parthenium hysterophorusRagweed Parthenium18196
4 United States (Florida) United StatesFlorida2014 Fallow, Industrial sites, Railways, and Roadsides glyphosate 45 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase HRAC Group 9 (Legacy G)
 		124Parthenium hysterophorusRagweed Parthenium11003
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.  Tuesday, November 4, 2025 .  Available  www.weedscience.org Copyright © 1993- 2025 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.