First Report of Powdery Mildew on Dipsacus sylvestris Caused by Sphaerotheca dipsacearum in North America

First Report of Powdery Mildew on Dipsacus sylvestris Caused by Sphaerotheca dipsacearum in North America

Common teasel (Dipsacus sylvestris) is a European species introduced into North America, and is now widely established and regarded as a noxious weed. In October 2005, a powdery mildew was observed on D. sylvestris in two locations in Pullman, Whitman Co., WA. Examination of diseased material confir...

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Veröffentlicht in:Plant health progress 2006, Vol.2006
Hauptverfasser: Dugan, F.M, Glawe, D.A
Format: Artikel
Sprache:eng
Schlagworte:
biological control agents
Dipsacus fullonum
mycoherbicides
new geographic records
new host records
plant pathogenic fungi
powdery mildew
Sphaerotheca
Sphaerotheca dipsacearum
weeds
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Zusammenfassung:Common teasel (Dipsacus sylvestris) is a European species introduced into North America, and is now widely established and regarded as a noxious weed. In October 2005, a powdery mildew was observed on D. sylvestris in two locations in Pullman, Whitman Co., WA. Examination of diseased material confirmed that the causal agent was S. dipsacearum. This report provides the first documentation of S. dipsacearum on D. sylvestris in North America.
ISSN:1535-1025
1535-1025