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Filtering by: Subject Brush -- Control -- Oregon Creator Booth, Steven R. Degree Name Doctor of Philosophy (Ph.D.)

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Creator:

Booth, Steven R.

Abstract:

This thesis addressed the potential of endemic predaceous and parasitic arthropods of the Hood River Valley, Oregon to suppress the pear psylla, Cacopsylla pyricola F8rster. Natural enemies adequately suppressed psylla in three of seven unsprayed orchards of differing vegetational settings, orchard age, and size. Relatively few psylla natural enemies dispersed...

Resource Type:

Dissertation

Full Text:

psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon AN ABSTRACT OF THE THESIS OF