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Ecological mechanisms underlying successful biological weed control: field experiments with ragwort Senecio jacobaea



Ecological mechanisms underlying successful biological weed control: field experiments with ragwort Senecio jacobaea



Proceedings of the VII International Symposium on Biological Control of Weeds: 55-66



The results are given of field experiments to investigate the ecological mechanisms underlying successful biological control of ragwort (Senecio jacobaea) by the cinnabar moth (Tyria jacobaeae) and ragwort flea beetle (Longitarsus jacobaeae) in W. Oregon. These herbivores depressed ragwort density to very low levels, reducing the density of vegetative plants by 89% and the number of capitula (flower heads) on generative plants by 93%.

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Accession: 002351259

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