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research article

The relation of pear psylla to pear decline … greenhouse tests

authors

D. D. Jensen, University of California
W. R. Erwin

publication information

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

author 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.

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.

author notes

The following graduate students assisted in this research program: P. Cook, C. Gemignani, M. Shapiro, and H. L. Wilson.

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