Frosted scale on walnuts: Codling moth treatment, DDT drift from adjacent crops interfere with control of the pest by natural enemies

Michelbacher, A; Hitchcock, S

Frosted scale on walnuts: Codling moth treatment, DDT drift from adjacent crops interfere with control of the pest by natural enemies

Authors

A. E. Michelbacher
Stephen Hitchcock

Authors Affiliations

A. E. Michelbachor is Associate Professor of Entomology, University of California, Berkeley; Stephen Hitchcock is graduate Research Assistant in Entomology, University of California, Berkeley.

Publication Information

Hilgardia 10(4):11-15. DOI:10.3733/ca.v010n04p11. April 1956.

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Abstract

Frosted scaleon walnuts—held in check by natural enemies—was almost an unknown problem in northern California until after DDT was used to control the codling moth.

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