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Creator:: Westigard, Peter H., Lombard, P. B. (Porter B.), and Berry, Donald W.
Abstract:: This publication deals with the development of integrated pest management of insect and mite species that attack pears in southern Oregon. Since about 1900, when the pear industry became firmly established in this area, losses from arthropod pests have been an important and occasionally limiting factor to the continuous production...
Resource Type:: Technical Report
Full Text:: Tactics 5 Spider Mites 9 Life History 10 Damage 12 Sampling 13 Control Tactics 15 Pear Psylla 19 Life

Creator:: Westigard, Peter H. and Zwick, Robert Ward, 1922-
Abstract:: Since its discovery in Oregon in 1946, the pear psylla, Psylla pyricola Forster, has become the most serious insect pest of pear. Damage to pear trees include the transmission of pear decline disease which has caused losses of trees, injection of a phytotoxic toxin resulting in tree shock and injury,...
Resource Type:: Technical Report
Full Text:: Pear Psylla in Oregon Technical Bulletin 122 AGRICULTURAL EXPERIMENT STATION Oregon State University

Creator:: Hilton, Richard and Westigard, Peter H.
Resource Type:: Conference Proceeding
Full Text:: mite, Pear psylla:Pear Richard Hilton, Peter Westigard Southern Oregon Experiment Station 569 Hanley

Creator:: VanBuskirk, Philip, Hilton, Richard, and Westigard, Peter H.
Resource Type:: Conference Proceeding
Full Text:: Spider Mite (TSM, and Pear Psylla (PP), Pear Philip VanBuskirk, Richard Hilton and Peter Westigard

Creator:: VanBuskirk, Philip, Hilton, Richard, and Westigard, Peter H.
Resource Type:: Conference Proceeding
Full Text:: Spider Mite (TSM), Pear Philip VanBuskirk, Richard Hilton and Peter Westigard Oregon State University

ScholarsArchive@OSU