International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP A/1 RESISTANT SILKY WINDGRASS
(Apera spica-venti)


ACCase inhibitors (A/1)

Poland, North East region
INTRODUCTION SILKY WINDGRASS
Silky Windgrass (Apera spica-venti) is a monocot weed in the Poaceae family.  In Poland this weed first evolved resistance to Group A/1 herbicides in 2010 and infests Winter 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 fenoxaprop-P-ethyl, and pinoxaden 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.

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 Feb 24, 2015 )

Common NameSilky Windgrass
SpeciesApera spica-venti
GroupACCase inhibitors (A/1)
Herbicidesfenoxaprop-P-ethyl, and pinoxaden
LocationPoland, North East region
Year2010
Situation(s)Winter wheat
Contributors - (Alphabetically)Kazimierz Adamczewski, Roman Kierzek, and Kinga Matysiak 
Edit this Case  |  Add New Case of Resistance  |  Add Note

NOTES ABOUT THIS BIOTYPE

GENERAL

Kazimierz Adamczewski
The seeds of Wind Bentgras (Apera spica-venti) become from difference sites from North-East part of Polnad and the seeds were collected from field were ACCase inhibitors during last few years was used for control and farmer got problem to control this grass. During years 2008-20010 15 samples were collected. Four replication greenhouse trials comparing with known susceptible Wind Bentgrass with collected samples was done. For testing the samples two types of experiments were used. At first experiment in one dose of three herbicides with difference mode of action were chosen: chlorsulfuron, fenoxaprop-P-ethyl and isoproturon (IPU). Two and 4 weeks after application visual assessment were done. Plants that did not show any symptoms of wilting or drying within 4 weeks after treatment were evaluated as resistant individuals. With 5sellected populations (biotypes) second type of experiments were done. At this trials fenoxaprop-P-ethyl and pinoxaden each in 7 deference dose were used, (low and high dose). And 4 weeks after treatment, the plants were cut at the soil surface and their fresh weight was determined. The obtained results were expressed to percent of control to untreated. The susceptible biotype (S) as standard was used. The results was used for calculation to define of effecting dose for calculation the ratio and ED50 for resistance and susceptible population, and for resistance index calculation. For each treatment four pot were used as four replication. Statistical analysis of date from greenhouse experiments was performed. At three sites one year field trials with isoproturon, fenoxaprop-P-ethyl and pinoxaden used with 4 dose were determined .

Edit this Note  |  Add New Note
 
GENERAL

Kazimierz Adamczewski
Adamczewski K., Matysiak K. 2009. Odporne biotypy miot³y zbo¿owej (Apera spica venti L.) na inhibitory karboksylazy acetyloCoA (ACCase) (Silky Bentgrass (Apera spica-venti L.) resistant biotypes to ACCase inhibitror herbicides). Progress in Plant Protection/Postepy w Ochronie Roslin Vol. 50 (1): 291-296. (in Polish, summery in English).

Adamczewski K., Kierzek, R. 2010. Resistance of silky bentgrass (Apera spica-venti (l.) Beauv.) to ACCase inhibitor herbicides in Poland. Proceedings of 15th Symposium EWRS. Kaposovar-Wêgry 2010: 53.

Edit this Note  |  Add New Note
 

ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Silky Windgrass biotype with this Silky Windgrass 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 Silky Windgrass 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 Silky Windgrass from Poland please update the database.
 
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS

KAZIMIERZ ADAMCZEWSKI
Professor
Institute Of Plant Protection - National Research Institute
Depart. Of Weed Science
Str. Wladyslawa Wegorka 20
Poznań, 60-318, Poznań
Poland
Email Kazimierz Adamczewski
ROMAN KIERZEK
Research Scientist
National Research Institute
Institute of Plant Protection - Weed Science Department
Wladyslawa Wegorka 20
Poznan, 60-318, Poznań
Poland
Email Roman Kierzek
KINGA MATYSIAK
Research Scientist
National Research Institute
Institute of Plant Protection - Weed Science Department
Wladyslawa Wegorka 20
Poznan, 60-318, Poznań
Poland
Email Kinga Matysiak

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Poland have been instrumental in providing you this information. Particular thanks is given to Kazimierz Adamczewski, Roman Kierzek, and Kinga Matysiak for providing detailed information.
Herbicide Resistant Silky Windgrass Globally
(Apera spica-venti)
Herbicide Resistant Silky Windgrass Globally
(Apera spica-venti)
Drag a column header and drop it here to group by that column
Herbicide Resistant Silky Windgrass Globally
(Apera spica-venti)
#CountryFirstYearSituationActive IngredientsSite of Action
1 AustriaAustria 2009 Cereals iodosulfuron-methyl-sodium, and isoproturon 2 Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass6746
2 Czech RepublicCzech Republic 2005 Cereals, and Winter wheat chlorsulfuron, iodosulfuron-methyl-sodium, isoproturon, mesosulfuron-methyl, pyroxsulam, and sulfosulfuron 12 Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass5266
3 DenmarkDenmark 2011 Winter wheat iodosulfuron-methyl-sodium, and sulfosulfuron 13 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass5674
4 DenmarkDenmark 2016 Wheat fenoxaprop-P-ethyl, florasulam, iodosulfuron-methyl-sodium, mesosulfuron-methyl, and pinoxaden 13 Multiple Resistance: 2 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass15078
5 FranceFrance 2006 Wheat iodosulfuron-methyl-sodium, mesosulfuron-methyl, and pyroxsulam 17 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass9936
6 GermanyGermany 1997 Cereals, and Winter wheat isoproturon 18 PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass5026
7 GermanyGermany 2005 Wheat chlorsulfuron, florasulam, flupyrsulfuron-methyl-sodium, iodosulfuron-methyl-sodium, mesosulfuron-methyl, pyroxsulam, sulfometuron-methyl, and sulfosulfuron 18 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass5526
8 GermanyGermany 2009 Spring Barley, and Winter wheat fenoxaprop-P-ethyl, iodosulfuron-methyl-sodium, isoproturon, mesosulfuron-methyl, pinoxaden, pyroxsulam, and sulfosulfuron 18 Multiple Resistance: 3 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass5410
9 LatviaLatvia 2015 Wheat, and Winter wheat iodosulfuron-methyl-sodium 174 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass15067
10 LithuaniaLithuania 2013 Winter wheat iodosulfuron-methyl-sodium 185 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass7821
11 PolandPoland 2005 Winter wheat chlorsulfuron, iodosulfuron-methyl-sodium, procarbazone-sodium, and sulfosulfuron 33 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass5395
12 PolandPoland 2010 Winter wheat fenoxaprop-P-ethyl, and pinoxaden 33 ACCase inhibitors (A/1)
20Apera spica-ventiSilky Windgrass5619
13 PolandPoland 2011 Winter wheat chlorsulfuron, fenoxaprop-P-ethyl, pinoxaden, sulfometuron-methyl, and sulfosulfuron 33 Multiple Resistance: 2 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass6758
14 PolandPoland 2012 Winter wheat isoproturon 33 PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass6759
15 SwedenSweden 2006 Winter wheat isoproturon 40 PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass10996
16 SwedenSweden 2010 Winter wheat iodosulfuron-methyl-sodium, and sulfosulfuron 40 ALS inhibitors (B/2)
20Apera spica-ventiSilky Windgrass10994
17 SwitzerlandSwitzerland 1994 Wheat isoproturon 41 PSII inhibitor (Ureas and amides) (C2/7)
20Apera spica-ventiSilky Windgrass208
Literature about Similar Cases

Page size:
select
Page: of 12
Items 1 to 5 of 57

Page size:
select
Page: of 12
Items 1 to 5 of 57
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, July 20, 2017 .  Available  www.weedscience.org
Copyright © 1993- 2017 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.