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Filtering by: Subject Psylla -- Oregon Resource Type Technical Report

The pear psylla in Oregon

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
Integrated control of pear Psylla in Oregon's Hood River Valley

Creator:

Oregon State University. Agricultural Experiment Station, Zwick, R. W. (Robert Ward), 1922-, and Fields, G. J.

Abstract:

Published April 1977. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

Resource Type:

Technical Report

Full Text:

F~i/e. Co^ Integrated Control of Pear Psylla in Oregon's