Group A/1 resistant Bromus sterilis from Germany

International Survey of Herbicide-Resistant Weeds

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Thursday, June 29, 2017

GROUP A/1 RESISTANT POVERTY BROME
(Bromus sterilis)

ACCase inhibitors (A/1)

Germany

INTRODUCTION		POVERTY BROME
Poverty Brome (Bromus sterilis) is a monocot weed in the Poaceae family. In Germany this weed first evolved resistance to Group A/1 herbicides in 2012 and infests Cereals, and Rapeseed. 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 cycloxydim, and propaquizafop and they may be cross-resistant to other Group A/1 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.

QUIK STATS (last updated Jan 06, 2014 )
Common Name	Poverty Brome
Species	Bromus sterilis
Group	ACCase inhibitors (A/1)
Herbicides	cycloxydim, and propaquizafop
Location	Germany
Year	2012
Situation(s)	Cereals, and Rapeseed
Contributors - (Alphabetically)	Dominik Dicke, and Jean Wagner
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ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Poverty Brome biotype with this Poverty Brome 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/1 resistant Poverty Brome 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 A/1 resistant Poverty Brome from Germany please update the database.

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CONTRIBUTING WEED SCIENTISTS

DOMINIK DICKE

Regional Authority Giessen, Plant Protection Service Hessen Schanzenfeldstraße 8 Wetzlar, 35578, Hesse Germany Email Dominik Dicke Web : Web Site Link

JEAN WAGNER

Weed Scientist Plant Pathology and Crop Protection Department of Crop Sciences Grisebachstrasse 6 Göttingen, 37077, Hesse Germany Email Jean Wagner Web : Web Site Link

ACKNOWLEDGEMENTS
The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Germany have been instrumental in providing you this information. Particular thanks is given to Dominik Dicke, and Jean Wagner for providing detailed information.

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Herbicide Resistant Poverty Brome Globally
(Bromus sterilis)

Country

FirstYear

Situation

Active Ingredients

Site of Action

France

2009

Wheat

iodosulfuron-methyl-sodium, mesosulfuron-methyl, propoxycarbazone-sodium, and pyroxsulam

ALS inhibitors (B/2)

Germany

2012

Cereals, and Rapeseed

cycloxydim, and propaquizafop

ACCase inhibitors (A/1)

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