International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
(Bromus sterilis)

ALS inhibitors (B/2)

Poverty Brome (Bromus sterilis) is a monocot weed in the Poaceae family.  In France this weed first evolved resistance to Group B/2 herbicides in 2009 and infests Wheat.   Group B/2 herbicides are known as ALS inhibitors (Inhibition of Acetolactate Synthase ).  Research has shown that these particular biotypes are resistant to iodosulfuron-methyl-sodium, mesosulfuron-methyl, propoxycarbazone-sodium, and pyroxsulam and they may be cross-resistant to other Group B/2 herbicides.

The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.

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QUIK STATS (last updated Nov 25, 2014 )

Common NamePoverty Brome
SpeciesBromus sterilis
GroupALS inhibitors (B/2)
Herbicidesiodosulfuron-methyl-sodium, mesosulfuron-methyl, propoxycarbazone-sodium, and pyroxsulam
Contributors - (Alphabetically)Christophe Délye 
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Confirmation Tests

Greenhouse, and Laboratory trials comparing a known susceptible Poverty Brome biotype with this Poverty Brome biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.

Genetic studies on Group B/2 resistant Poverty Brome have not been reported to the site.  There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature
Mechanism of Resistance

The mechanism of resistance for this biotype is either unknown or has not been entered in the database.  If you know anything about the mechanism of resistance for this biotype then please update the database.
Relative Fitness

There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes.  If you have any information pertaining to the fitness of Group B/2 resistant Poverty Brome from France please update the database.
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Chargé de Recherches
17 rue de Sully
Dijon, F-21000, Burgundy
Email Christophe Délye
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The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in France have been instrumental in providing you this information. Particular thanks is given to Christophe Délye for providing detailed information.
Herbicide Resistant Poverty Brome Globally
(Bromus sterilis)
Herbicide Resistant Poverty Brome Globally
(Bromus sterilis)
Drag a column header and drop it here to group by that column
Herbicide Resistant Poverty Brome Globally
(Bromus sterilis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Czech RepublicCzech Republic 2017 Wheat propoxycarbazone-sodium, pyroxsulam, and sulfometuron-methyl 12 ALS inhibitors (B/2)
289Bromus sterilisPoverty Brome18211
2 FranceFrance 2009 Wheat iodosulfuron-methyl-sodium, mesosulfuron-methyl, propoxycarbazone-sodium, and pyroxsulam 17 ALS inhibitors (B/2)
289Bromus sterilisPoverty Brome9931
3 GermanyGermany 2012 Cereals, and Rapeseed cycloxydim, and propaquizafop 18 ACCase inhibitors (A/1)
289Bromus sterilisPoverty Brome6741
4 GermanyGermany 2017 Wheat propoxycarbazone-sodium 18 ALS inhibitors (B/2)
289Bromus sterilisPoverty Brome17143
Literature about Similar Cases

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