International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
MULTIPLE RESISTANT HOOD CANARYGRASS
(Phalaris paradoxa)


Multiple Resistance: 2 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)

Australia, New South Wales
INTRODUCTION HOOD CANARYGRASS
Hood Canarygrass (Phalaris paradoxa) is a monocot weed in the Poaceae family.  In New South Wales this weed first evolved multiple resistance (to 2 herbicide sites of action) in 2012 and infests Spring Barley, and Wheat.  Multiple resistance has evolved to herbicides in the Groups A/1, and B/2.  These particular biotypes are known to have resistance to clodinafop-propargyl, and mesosulfuron-methyl and they may be cross-resistant to other herbicides in the Groups A/1, and B/2.

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 Jan 22, 2014 )

Common NameHood Canarygrass
SpeciesPhalaris paradoxa
GroupACCase inhibitors (A/1)
ALS inhibitors (B/2)
Herbicidesclodinafop-propargyl, and mesosulfuron-methyl
LocationAustralia, New South Wales
Year2012
Situation(s)Spring Barley, and Wheat
Contributors - (Alphabetically)Peter Boutsalis, and Christopher Preston 
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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse, and Laboratory trials comparing a known susceptible Hood Canarygrass biotype with this Hood Canarygrass 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 A, B/1, 2 resistant Hood Canarygrass 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 multiple resistant Hood Canarygrass from New South Wales please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

PETER BOUTSALIS
Postdoctural Fellow/ Consultant
University Of Adelaide / Plant Science Consulting
Plant And Pest Science
800 N Lindbergh Blvd
02G
Adelaide, 5064, South Australia
Australia
Email Peter Boutsalis
CHRISTOPHER PRESTON
Postdoctural Fellow/ Consultant
University Of Adelaide - Waite Campus
Crc For Australian Weed Management And School Of Agriculture
Box 2146
Adelaide, 5064, South Australia
Australia
Email Christopher Preston

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in New South Wales have been instrumental in providing you this information. Particular thanks is given to Peter Boutsalis, and Christopher Preston 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-P-ethyl, and sethoxydim 1 ACCase inhibitors (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
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
128Phalaris paradoxaHood Canarygrass7840
3 IranIran 2007 Winter wheat diclofop-methyl 79 ACCase inhibitors (A/1)
128Phalaris paradoxaHood Canarygrass5342
4 IsraelIsrael 1979 Railways, and Roadsides atrazine 23 Photosystem II inhibitors (C1/5)
128Phalaris paradoxaHood Canarygrass96
5 IsraelIsrael 2004 Peas, and Wheat clethodim, clodinafop-propargyl, cycloxydim, diclofop-methyl, fenoxaprop-P-ethyl, fluazifop-P-butyl, haloxyfop-P-methyl, and tralkoxydim 23 ACCase inhibitors (A/1)
128Phalaris paradoxaHood Canarygrass5299
6 ItalyItaly 1998 Wheat clodinafop-propargyl, diclofop-methyl, pinoxaden, and sethoxydim 24 ACCase inhibitors (A/1)
128Phalaris paradoxaHood Canarygrass5108
7 MexicoMexico 1996 Wheat clodinafop-propargyl, fenoxaprop-P-ethyl, pinoxaden, and tralkoxydim 29 ACCase inhibitors (A/1)
128Phalaris paradoxaHood Canarygrass5479
8 SyriaSyria 2015 Faba beans, Potatoes, and Wheat clodinafop-propargyl, and fenoxaprop-P-ethyl 69 ACCase inhibitors (A/1)
128Phalaris paradoxaHood Canarygrass15059
Literature about Similar Cases

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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, May 27, 2017 .  Available  www.weedscience.org
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