International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 2 (LEGACY B) RESISTANT CORN CHAMOMILE
(Anthemis arvensis)


Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)

Chile, La Araucanía
INTRODUCTION CORN CHAMOMILE
Corn Chamomile (Anthemis arvensis) is a dicot weed in the Asteraceae family.  In Chile this weed first evolved resistance to Group 2 (Legacy B) herbicides in 2010 and infests Wheat.   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 iodosulfuron-methyl-Na, mesosulfuron-methyl, and pyroxsulam 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.

If we do not have a picture for this weed, or you can provide a better picture (scan, digital camera etc) please please e-mail it to us.

QUIK STATS (last updated Dec 30, 2013 )

Common NameCorn Chamomile
SpeciesAnthemis arvensis
GroupInhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Herbicidesiodosulfuron-methyl-Na, mesosulfuron-methyl, and pyroxsulam
LocationChile, La Araucanía
Year2010
Situation(s)Wheat
Contributors - (Alphabetically)Nelson Espinoza, and Cristian Rodriguez 
Edit this Case  |  Add New Case of Resistance  |  Add Note

ACADEMIC ASPECTS

Confirmation Tests

Field, and Greenhouse trials comparing a known susceptible Corn Chamomile biotype with this Corn 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 HRAC Group 2 resistant Corn 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 2 (Legacy B) resistant Corn Chamomile from Chile please update the database.
 
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS

NELSON ESPINOZA
Investigador Malherbología
Inia-Carillanca
Producción Vegetal
USDA-ARS, 302 Natural Resources Bldg
Cropping Systems& Water Quality
Temuco
Chile
Email Nelson Espinoza
Web   : Web Site Link
CRISTIAN RODRIGUEZ
Agronomist
Inia-Carillanca
Producción Vegetal
USDA-ARS, 302 Natural Resources Bldg
Cropping Systems& Water Quality
Temuco
Chile
Email Cristian Rodriguez
Web   : Web Site Link

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Chile have been instrumental in providing you this information. Particular thanks is given to Nelson Espinoza, and Cristian Rodriguez for providing detailed information.
Herbicide Resistant Corn Chamomile Globally
(Anthemis arvensis)
Herbicide Resistant Corn Chamomile Globally
(Anthemis arvensis)
Drag a column header and drop it here to group by that column
Herbicide Resistant Corn Chamomile Globally
(Anthemis arvensis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ChileChile 2010 Wheat iodosulfuron-methyl-Na, mesosulfuron-methyl, and pyroxsulam 8 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
268Anthemis arvensisCorn Chamomile5589
Literature about Similar Cases

1
Page size:
select
Page: of 1
Items 1 to 1 of 1

1
Page size:
select
Page: of 1
Items 1 to 1 of 1
PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site.
Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Wednesday, December 4, 2024 .  Available  www.weedscience.org
Copyright © 1993- 2024 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.