Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Subject Trees -- Diseases and pests -- United States Committee Member Boucot, Art

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:

distribution of spruce spider mite and its predator mites was studied on Douglas-fir Christmas trees in the