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Filtering by: Subject Douglas fir -- Diseases and pests -- Biological control Degree Field Entomology

Differential growth of roots and shoots of Douglas-fir (Pseudotsuga menziesii) seedlings infested with Cinara pseudotsugae, and population dynamics of a parasitoid wasp (Pauesia sp.) of C. pseudotsugae

Creator:

Smith, Julia P.

Abstract:

Aphids are a widespread family of plant pests, whose abilities to suppress shoot and root growth are well documented for many terrestrial plants. Only a few studies have been conducted on conifer aphids of the genus Cinara. Cinara pseudotsugae are known to attack Douglas-fir seedlings, an important crop in the...

Resource Type:

Masters Thesis

Full Text:

. pseudotsugae, and may be useful as a biological control agent. Studies of its natural history and host