International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP B/2 RESISTANT SCENTLESS CHAMOMILE
(Tripleurospermum perforatum (=T. inodorum))


ALS inhibitors (B/2)

Poland, Middle North
INTRODUCTION SCENTLESS CHAMOMILE
Scentless Chamomile (Tripleurospermum perforatum (=T. inodorum)) is a dicot weed in the Asteraceae family.  In Poland this weed first evolved resistance to Group B/2 herbicides in 2014 and infests Winter wheat.   Group B/2 herbicides are known as ALS inhibitors (Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)).  Research has shown that these particular biotypes are resistant to tribenuron-methyl 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 Mar 31, 2015 )

Common NameScentless Chamomile
SpeciesTripleurospermum perforatum (=T. inodorum)
GroupALS inhibitors (B/2)
Herbicidestribenuron-methyl
LocationPoland, Middle North
Year2014
Situation(s)Winter wheat
Contributors - (Alphabetically)Kazimierz Adamczewski, and Kinga Matysiak 
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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Scentless Chamomile biotype with this Scentless Chamomile biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.
 
Genetics

Genetic studies on Group B/2 resistant Scentless Chamomile 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 Scentless Chamomile from Poland please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

KAZIMIERZ ADAMCZEWSKI
Professor
Institute Of Plant Protection - National Research Institute
Depart. Of Weed Science
Str. Wladyslawa Wegorka 20
Poznań, 60-318, Poznań
Poland
Email Kazimierz Adamczewski
KINGA MATYSIAK
Research Scientist
National Research Institute
Institute of Plant Protection - Weed Science Department
Wladyslawa Wegorka 20
Poznan, 60-318, Poznań
Poland
Email Kinga Matysiak

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Poland have been instrumental in providing you this information. Particular thanks is given to Kazimierz Adamczewski, and Kinga Matysiak for providing detailed information.
Herbicide Resistant Scentless Chamomile Globally
(Tripleurospermum perforatum (=T. inodorum))
Herbicide Resistant Scentless Chamomile Globally
(Tripleurospermum perforatum (=T. inodorum))
Drag a column header and drop it here to group by that column
Herbicide Resistant Scentless Chamomile Globally
(Tripleurospermum perforatum (=T. inodorum))
#CountryFirstYearSituationActive IngredientsSite of Action
1 DenmarkDenmark 2010 Spring Barley, and Winter wheat iodosulfuron-methyl-sodium, and tribenuron-methyl 13 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile5673
2 FranceFrance 2010 Wheat metsulfuron-methyl 17 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile9939
3 GermanyGermany 2009 Wheat tribenuron-methyl 18 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile5534
4 NorwayNorway 2006 Winter wheat iodosulfuron-methyl-sodium, and tribenuron-methyl 31 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile10975
5 PolandPoland 2014 Winter wheat tribenuron-methyl 33 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile10971
6 SwedenSweden 2015 Wheat florasulam, and tribenuron-methyl 40 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile15076
7 United KingdomUnited Kingdom 2002 Cereals metsulfuron-methyl 44 ALS inhibitors (B/2)
116Tripleurospermum perforatum (=T. inodorum)Scentless Chamomile7763
Literature about Similar Cases

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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Wednesday, April 26, 2017 .  Available  www.weedscience.org
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