Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

The relation of pear psylla to pear decline … greenhouse tests

Authors

D. D. Jensen
W. R. Erwin

Authors Affiliations

D. D. Jensen is Professor and Entomologist in the Experiment Station, University of California, Berkeley; W. R. Erwin is Laboratory Technician III, Department of Entomology, U.C., Berkeley.

Publication Information

Hilgardia 17(1):2-4. DOI:10.3733/ca.v017n01p2. January 1963.

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Abstract

Extensive research by U.C. entomologists, in both greenhouse and field test plots, on the relation of insects to the cause or spread of pear decline disease indicates that the pear psylla, Psylla pyricola Foerster, is the key to the problem.

Jensen D, Erwin W. 1963. The relation of pear psylla to pear decline … greenhouse tests. Hilgardia 17(1):2-4. DOI:10.3733/ca.v017n01p2
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