International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP B/2 RESISTANT AFRICAN MUSTARD
(Brassica tournefortii)


ALS inhibitors (B/2)

Australia, Western Australia
INTRODUCTION AFRICAN MUSTARD
African Mustard (Brassica tournefortii) is a dicot weed in the Brassicaceae family.  In Western Australia this weed first evolved resistance to Group B/2 herbicides in 1992 and infests Wheat.   Group B/2 herbicides are known as ALS inhibitors (Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)).  Research has shown that these particular biotypes are resistant to chlorsulfuron and they may be cross-resistant to other Group B/2 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 NameAfrican Mustard
SpeciesBrassica tournefortii
GroupALS inhibitors (B/2)
Herbicideschlorsulfuron
LocationAustralia, Western Australia
Year1992
Situation(s)Wheat
Contributors - (Alphabetically)David Bowran, and Gurgeet Gill 
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Gurgeet Gill
Southern wheatbelt.

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CONTROL STRATEGIES

Sanjeev Kumar
Wild Oat (Avena fatua) is a monocot weed in the Poaceae family.  In Argentina this weed first evolved resistance to Group A/1 herbicides in 2010 and infests Spring Barley, and Wheat.   Group A/1 herbicides are known as ACCase inhibitors (Inhibition of acetyl CoA carboxylase (ACCase)).  Research has shown that these particular biotypes are resistant to clodinafop-propargyl, diclofop-methyl, and fenoxaprop-P-ethyl and they may be cross-resistant to other Group A/1 herbicides.

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GENERAL

Gurgeet Gill
Populations have shown a high level of resistance to chlorsulfuron. No stunting at all of the survivors.

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ACADEMIC ASPECTS

Confirmation Tests

Field, and Greenhouse trials comparing a known susceptible African Mustard biotype with this African Mustard 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 B/2 resistant African Mustard 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 B/2 resistant African Mustard from Western Australia please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

DAVID BOWRAN
Research Officer
Agriculture Wa
748 Railroad Hwy
Northam, Western Australia
Australia
Email David Bowran
GURGEET GILL
Research Officer
University Of Adelaide
Department Of Agronomy And Farming Systems
Crop, Soil
Environmental Sciences, 1366 W. Altheimer Dr,
Roseworthy, 5371, South Australia
Australia
Email Gurgeet Gill

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Western Australia have been instrumental in providing you this information. Particular thanks is given to David Bowran, and Gurgeet Gill for providing detailed information.
Herbicide Resistant African Mustard Globally
(Brassica tournefortii)
Herbicide Resistant African Mustard Globally
(Brassica tournefortii)
Drag a column header and drop it here to group by that column
Herbicide Resistant African Mustard Globally
(Brassica tournefortii)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (Western Australia) AustraliaWestern Australia1992 Wheat chlorsulfuron 1 ALS inhibitors (B/2)
37Brassica tournefortiiAfrican Mustard12
2 Australia (South Australia) AustraliaSouth Australia1996 Cereals chlorsulfuron, imazamox, imazapyr, and sulfometuron-methyl 1 ALS inhibitors (B/2)
37Brassica tournefortiiAfrican Mustard5202
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Tuesday, September 17, 2019 .  Available  www.weedscience.org
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