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Filtering by: Advisor Fisher, Glenn Collins Advisor Fisher, Glenn Degree Field Entomology

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Creator:

Calkin, James D.

Abstract:

The shake and wash technique (samples placed in a jar with alcohol added and shaken to remove the mites) was effective in removing 100% of the predator mites, and adult spruce spider mites from Douglas-fir foliage and 98% of the spruce spider mite nymphs. Eighty-eight percent of the spruce spider...

Resource Type:

Masters Thesis

Full Text:

approved. Redacted for Privacy Abstract approved_ Jack DeAngelis Redacted for Privacy I/Glenn Fisher
Use of a geographical information system to modify pheromone trap-based predictions of Helicoverpa zea (Boddie) damage

Creator:

Drapek, Raymond James

Abstract:

The GRASS (V. 4.0) geographical information system (GIS) was used to test the hypothesis that pheromone trap based predictions of Helicoverpa zea (Boddie) damage in processed sweet corn could be improved by considering spatial patterns of corn plantings and wind blocking features around the trap. Wind blocking features include: tree...

Resource Type:

Dissertation

Full Text:

. Abstract Approved: Brian Croft Glenn Fisher The GRASS (V. 4.0) geographical information system (GIS) was