International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 1 (LEGACY A) RESISTANT HOOD CANARYGRASS
(Phalaris paradoxa)


Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)

Israel
INTRODUCTION BLACKGRASS
Blackgrass (Alopecurus myosuroides) is a monocot weed in the Poaceae family.  In Belgium this weed first evolved multiple resistance (to 4 herbicide sites of action) in 1996 and infests Peas, and Wheat.  Multiple resistance has evolved to herbicides in the Groups 1 (Legacy A), Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B), PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2), and Inhibition of Microtubule Assembly 2 HRAC Group 3 (Legacy K1).  These particular biotypes are known to have resistance to clethodim, clodinafop-propargyl, cycloxydim, diclofop-methyl, fenoxaprop-ethyl, fluazifop-butyl, haloxyfop-methyl, and tralkoxydim and they may be cross-resistant to other herbicides in the Groups 1 (Legacy A), Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B), PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2), and Inhibition of Microtubule Assembly 2 HRAC Group 3 (Legacy K1).

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 Nov 21, 2000 )

Common NameBlackgrass
SpeciesAlopecurus myosuroides
GroupInhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)

Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)

PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)

Inhibition of Microtubule Assembly 2 HRAC Group 3 (Legacy K1)
Herbicidesclethodim, clodinafop-propargyl, cycloxydim, diclofop-methyl, fenoxaprop-ethyl, fluazifop-butyl, haloxyfop-methyl, and tralkoxydim
LocationBelgium
Year1996
Situation(s)Peas, and Wheat
Contributors - (Alphabetically)Ofer Hochberg, and Baruch Rubin 
Edit this Case  |  Add New Case of Resistance  |  Add Note

ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Blackgrass biotype with this Blackgrass 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 1, 2, 5, 3 resistant Blackgrass 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

Studies on the mechanism of resistance of multiple resistant Blackgrass from Belgium indicate that resistance is due to an altered target site.  There may be a note below or an article discussing the mechanism of resistance in the Fact Sheets and Other Literature
 
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 multiple resistant Blackgrass from Belgium please update the database.
 
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS

OFER HOCHBERG
M.sc Student
The Hebrew University Of Jerusalem
Rh Smith Institute Of Plant Sciences And Genetics In Agricul
9335 Hazard Way Ste 201
Rehovot, 76100
Israel
Email Ofer Hochberg
BARUCH RUBIN
Professor
Hebrew University Of Jerusalem
Inst. Plant Sci. & Genetics In Agriculture
Faculty Of Agric.
Food & Environm.
Rehovot, 76100, Israel
Israel
Email Baruch Rubin

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Belgium have been instrumental in providing you this information. Particular thanks is given to Ofer Hochberg, and Baruch Rubin for providing detailed information.
Herbicide Resistant Hood Canarygrass Globally
(Phalaris paradoxa)
Herbicide Resistant Hood Canarygrass Globally
(Phalaris paradoxa)
Drag a column header and drop it here to group by that column
Herbicide Resistant Hood Canarygrass Globally
(Phalaris paradoxa)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (New South Wales ) AustraliaNew South Wales 1997 Wheat, and Winter pulses fenoxaprop-ethyl, and sethoxydim 1 Inhibition of Acetyl CoA Carboxylase (A/1)
128Phalaris paradoxaHood Canarygrass1137
2 Australia (New South Wales ) AustraliaNew South Wales 2012 Spring Barley, and Wheat clodinafop-propargyl, and mesosulfuron-methyl 1 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase (A/1)
Inhibition of Acetolactate Synthase (B/2)
128Phalaris paradoxaHood Canarygrass7840
3 IranIran 2007 Winter wheat diclofop-methyl 79 Inhibition of Acetyl CoA Carboxylase (A/1)
128Phalaris paradoxaHood Canarygrass5342
4 IsraelIsrael 1979 Railways, and Roadsides atrazine 23 PSII inhibitors - Serine 264 Binders (C1 C2/5)
128Phalaris paradoxaHood Canarygrass96
5 IsraelIsrael 2004 Peas, and Wheat clethodim, clodinafop-propargyl, cycloxydim, diclofop-methyl, fenoxaprop-ethyl, fluazifop-butyl, haloxyfop-methyl, and tralkoxydim 23 Inhibition of Acetyl CoA Carboxylase (A/1)
128Phalaris paradoxaHood Canarygrass5299
6 ItalyItaly 1998 Wheat clodinafop-propargyl, diclofop-methyl, pinoxaden, and sethoxydim 24 Inhibition of Acetyl CoA Carboxylase (A/1)
128Phalaris paradoxaHood Canarygrass5108
7 MexicoMexico 1996 Wheat clodinafop-propargyl, fenoxaprop-ethyl, pinoxaden, and tralkoxydim 29 Inhibition of Acetyl CoA Carboxylase (A/1)
128Phalaris paradoxaHood Canarygrass5479
8 SyriaSyria 2015 Faba beans, Potatoes, and Wheat clodinafop-propargyl, and fenoxaprop-ethyl 69 Inhibition of Acetyl CoA Carboxylase (A/1)
128Phalaris paradoxaHood Canarygrass15059
Literature about Similar Cases

Page size:
select
Page: of 4
Items 1 to 5 of 19

Page size:
select
Page: of 4
Items 1 to 5 of 19
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.  Thursday, June 17, 2021 .  Available  www.weedscience.org
Copyright © 1993- 2021 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.