INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE

HRAC GROUP 2 (LEGACY B) RESISTANT CORN POPPY
(Papaver rhoeas)


Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)

Germany
INTRODUCTION CORN POPPY
Corn Poppy (Papaver rhoeas) is a dicot weed in the Papaveraceae family.  In Germany this weed first evolved resistance to Group 2 (Legacy B) herbicides in 2012 and infests Cereals, and Rapeseed.   Group 2 (Legacy B) herbicides are known as Inhibition of Acetolactate Synthase (Inhibition of Acetolactate Synthase ).  Research has shown that these particular biotypes are resistant to florasulam, and imazamox and they may be cross-resistant to other Group 2 (Legacy B) 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 Aug 06, 2013 )

Common NameCorn Poppy
SpeciesPapaver rhoeas
GroupInhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Herbicidesflorasulam, and imazamox
LocationGermany
Year2012
Situation(s)Cereals, and Rapeseed
Contributors - (Alphabetically)Jan Petersen, and Alfons Schönhammer 
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ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Corn Poppy biotype with this Corn Poppy 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 HRAC Group 2 resistant Corn Poppy 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 2 (Legacy B) resistant Corn Poppy from Germany please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

JAN PETERSEN
Professor
University Of Applied Science Bingen
Fac. Of Life Science And Engineering
2836 Crestscene Trail
Bingen, D-55411
Germany
Email Jan Petersen
Web   : Web Site Link
ALFONS SCHÖNHAMMER
Professor
BASF SE
Fac. Of Life Science And Engineering
E-APE/DT - LI556
Limburgerhof, D-67117
Germany
Email Alfons Schönhammer
Web   : Web Site Link

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Germany have been instrumental in providing you this information. Particular thanks is given to Jan Petersen, and Alfons Schönhammer for providing detailed information.
Herbicide Resistant Corn Poppy Globally
(Papaver rhoeas)
Herbicide Resistant Corn Poppy Globally
(Papaver rhoeas)
Drag a column header and drop it here to group by that column
Herbicide Resistant Corn Poppy Globally
(Papaver rhoeas)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BelgiumBelgium 2014 Wheat florasulam, and metsulfuron-methyl 3 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy10960
2 DenmarkDenmark 2003 Wheat florasulam, iodosulfuron-methyl-Na, and tribenuron-methyl 13 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy5346
3 FranceFrance 2007 Wheat iodosulfuron-methyl-Na, mesosulfuron-methyl, and metsulfuron-methyl 17 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy5517
4 FranceFrance 2015 Wheat 2,4-D, and aminopyralid 17 Auxin Mimics ( HRAC Group 4 (Legacy O)
123Papaver rhoeasCorn Poppy18176
5 FranceFrance 2016 Cereals 2,4-D, aminopyralid, iodosulfuron-methyl-Na, MCPA, mesosulfuron-methyl, and metsulfuron-methyl 17 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
Auxin Mimics ( HRAC Group 4 (Legacy O)
123Papaver rhoeasCorn Poppy15054
6 GermanyGermany 2012 Cereals, and Rapeseed florasulam, and imazamox 18 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy6743
7 GreeceGreece 1998 Winter wheat chlorsulfuron, florasulam, imazamox, pyrithiobac-sodium, thifensulfuron-methyl, triasulfuron, and tribenuron-methyl 19 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy1142
8 GreeceGreece 2002 Wheat 2,4-D, iodosulfuron-methyl-Na, and mesosulfuron-methyl 19 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
Auxin Mimics ( HRAC Group 4 (Legacy O)
123Papaver rhoeasCorn Poppy18174
9 ItalyItaly 1998 Durum wheat florasulam, iodosulfuron-methyl-Na, and tribenuron-methyl 24 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy1140
10 ItalyItaly 1998 Wheat 2,4-D, iodosulfuron-methyl-Na, and tribenuron-methyl 24 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
Auxin Mimics ( HRAC Group 4 (Legacy O)
123Papaver rhoeasCorn Poppy5679
11 ItalyItaly 1998 Wheat 2,4-D 24 Auxin Mimics ( HRAC Group 4 (Legacy O)
123Papaver rhoeasCorn Poppy5680
12 PolandPoland 2014 Winter wheat tribenuron-methyl 33 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy10983
13 SpainSpain 1993 Cereals, and Wheat 2,4-D, and tribenuron-methyl 38 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
Auxin Mimics ( HRAC Group 4 (Legacy O)
123Papaver rhoeasCorn Poppy185
14 SwedenSweden 2011 Winter wheat amidosulfuron, iodosulfuron-methyl-Na, and propoxycarbazone-Na 40 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy8913
15 United KingdomUnited Kingdom 2001 Cereals metsulfuron-methyl 44 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
123Papaver rhoeasCorn Poppy5169
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