Journal für Kulturpflanzen - Journal of Cultivated Plants (2013) 65, 351-354

Bernd Augustin (2013)
Erstnachweis von Herbizidresistenz bei Flughafer (Avena fatua L.) in Deutschland
[First report on herbicide resistance of wild oat (Avena fatua L.) in Germany]
Journal für Kulturpflanzen - Journal of Cultivated Plants 65 (9), 351-354
Abstract: Two seed samples of Wild Oat (F1, F2) were collected from sugar beet fields in Rhineland-Palatinate in 2011 showing reduced herbicide performance. A seed treatment with gibberellic acid improved uniform germination of the Wild Oat samples during greenhouse experiments. Herbicide action was tested by means of two successive biotests. ACCase-inhibitors (Fenoxaprop, Pinoxaden, Clodinafop+Pinoxaden, Cycloxidim) and one ALS-inhibitor were treated at 2_3-leafstage of the Wild Oat. The visual rating of herbicide efficiency 3 and 4 weeks after treatment showed a cross resistance among the tested ACCase-inhibitors, except for Cycloxidim for both samples. Seed sample F2 revealed an advanced degree of herbicide resistance, declining from Fenoxaprop to Pinoxaden.Herbicide resistance of sample F1 was restrictedto single plants. A subsequent genetic analysis of leaf material revealed a target-site mutation I1781L for both samples of Wild Oat.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Avena fatua (weed)	Beet/sugarbeet (Beta vulgaris)	Germany