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Filtering by: Subject Yellow starthistle -- Control -- Oregon Degree Level Master's

The effects of defoliation on yellow starthistle (Centaurea solstitialis L.) reproductive capacity

Creator:

Schumacher, Stacy

Abstract:

Yellow starthistle (Centaurea solstitialis L.) is an introduced Asteraceae that has become established on 10 million acres in the Pacific Northwest and California. This weed functions as an annual or short-lived perennial and depends on seeds for reproduction. Strategies of control that reduce plant fitness or lower seed production or...

Resource Type:

Masters Thesis

Full Text:

northeastern Oregon 47 14. Percent infestation of yellow starthistle seedheads of biological control agents
Hybridization between yellow starthistle (Centaurea solstitialis) and meadow knapweed (Centaurea x moncktonii)

Creator:

Miskella, John

Abstract:

Centaurea solstitialis L. (yellow starthistle) and C. × moncktonii Britt. (meadow knapweed) are members of the genus Centaurea in the Asteraceae family. Both species have become serious management concerns as invasive species in North America, often displacing native vegetation and costing land managers millions of dollars to eradicate. Seven plants...

Resource Type:

Masters Thesis

Full Text:

United Kingdom and northern Europe. In Oregon, yellow starthistle is established in eastern and