International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 4 (LEGACY O) RESISTANT GLOBE FRINGERUSH
(Fimbristylis miliacea)


Auxin Mimics HRAC Group 4 (Legacy O)

Malaysia, Kedah
INTRODUCTION GLOBE FRINGERUSH
Globe Fringerush (Fimbristylis miliacea) is a monocot weed in the Cyperaceae family.  In Malaysia this weed first evolved resistance to Group 4 (Legacy O) herbicides in 1989 and infests Rice.   Group 4 (Legacy O) herbicides are known as Auxin Mimics (Auxin Mimics ).  Research has shown that these particular biotypes are resistant to 2,4-D and they may be cross-resistant to other Group 4 (Legacy O) 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 Jun 06, 2000 )

Common NameGlobe Fringerush
SpeciesFimbristylis miliacea
GroupAuxin Mimics HRAC Group 4 (Legacy O)
Herbicides2,4-D
LocationMalaysia, Kedah
Year1989
Situation(s)Rice
Contributors - (Alphabetically)Rajan Amartalingam, and Baki Bakar 
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Baki Bakar
Kedah State. Kampong Gulau area.

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ACADEMIC ASPECTS

Confirmation Tests

Field, and Greenhouse trials comparing a known susceptible Globe Fringerush biotype with this Globe Fringerush 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 4 resistant Globe Fringerush 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 4 (Legacy O) resistant Globe Fringerush from Malaysia please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

RAJAN AMARTALINGAM
University Of Pertanian Malaysia
Fakulti Pertanian
Crops Branch
125-3085 Albert St,
Upm Serdang, 43400, Selangor
Malaysia
Email Rajan Amartalingam
BAKI BAKAR
Senior Research Fellow
Institute of Biological Sciences, University Of Malaya
Dept. Of Botany
Faculty of Science Building
Kuala Lumpur, 50603 , Kuala Lumpur
Malaysia
Email Baki Bakar
Web   : Web Site Link

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Malaysia have been instrumental in providing you this information. Particular thanks is given to Rajan Amartalingam, and Baki Bakar for providing detailed information.
Herbicide Resistant Globe Fringerush Globally
(Fimbristylis miliacea)
Herbicide Resistant Globe Fringerush Globally
(Fimbristylis miliacea)
Drag a column header and drop it here to group by that column
Herbicide Resistant Globe Fringerush Globally
(Fimbristylis miliacea)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 2001 Rice pyrazosulfuron-ethyl 5 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
90Fimbristylis miliaceaGlobe Fringerush5117
2 MalaysiaMalaysia 1989 Rice 2,4-D 28 Auxin Mimics ( HRAC Group 4 (Legacy O)
90Fimbristylis miliaceaGlobe Fringerush141
3 VenezuelaVenezuela 2010 Rice imazapyr, imazethapyr, and pyrazosulfuron-ethyl 80 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
90Fimbristylis miliaceaGlobe Fringerush5548
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