INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Herbicide Resistant Roughstalk Bluegrass Globally
(Poa trivialis)
Herbicide Resistant Roughstalk Bluegrass Globally
(Poa trivialis)
Drag a column header and drop it here to group by that column
Herbicide Resistant Roughstalk Bluegrass Globally
(Poa trivialis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 FranceFrance 2012 Wheat iodosulfuron-methyl-Na, and mesosulfuron-methyl 17 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		350Poa trivialisRoughstalk Bluegrass18179
2 IrelandIreland 2023 Wheat iodosulfuron-methyl-Na, mesosulfuron-methyl, and propoxycarbazone-Na 81 Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
 		350Poa trivialisRoughstalk Bluegrass31279
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, November 3, 2025 .  Available  www.weedscience.org Copyright © 1993- 2025 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.