INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Longflowered veldtgrass (Ehrharta longiflora) is a monocot weed in the Poaceae family. In Western Australia this weed first evolved resistance to Group A/1 herbicides in 2014 and infests Bushland Reserve. Group A/1 herbicides are known as ACCase inhibitors (Inhibition of Acetyl CoA Carboxylase
). Research has shown that these particular biotypes are resistant to clethodim, haloxyfop-methyl, and quizalofop-ethyl 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.
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Common Name | Longflowered veldtgrass | Species | Ehrharta longiflora | Group | ACCase inhibitors (A/1) | Herbicides | clethodim, haloxyfop-methyl, and quizalofop-ethyl | Location | Australia, Western Australia | Year | 2014 | Situation(s) | Bushland Reserve | Contributors - (Alphabetically) | Peter Boutsalis, and Sally Peltzer | |
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| Greenhouse, and Laboratory trials comparing a known susceptible Longflowered veldtgrass biotype with this Longflowered veldtgrass biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information. |
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| Genetic studies on Group A/1 resistant Longflowered veldtgrass 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 |
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| 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. |
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| 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 Longflowered veldtgrass from Western Australia please update the database. |
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| 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 |
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| Western Australia Research and Communications Officer Western Australian Department of Agriculture and Food Weed Research 444 Albany Highway Orana Albany, 6330, Western Australia Australia Email Sally Peltzer |
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Drag a column header and drop it here to group by that column |
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1
| Australia (Western Australia) | Australia | Western Australia | 2014 |
Bushland Reserve
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clethodim, haloxyfop-methyl, and quizalofop-ethyl
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ACCase inhibitors (A/1)
| 315 | Ehrharta longiflora | Longflowered veldtgrass | 8899 |
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PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site. Citation:
Heap, I. The International Herbicide-Resistant Weed Database. Online.
. Available
www.weedscience.org
Copyright © 1993-
WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.
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