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California Agriculture
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Dusky-veined walnut aphid studies

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Publication Information

California Agriculture 28(7):18-19.

Published July 01, 1974

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Abstract

Abstract Not Available – First paragraph follows: IN 1928, THE EUROPEAN DUSKY-VEINED walnut aphid, Panaphis juglandis (Goeze), made its first appearance in the Western hemisphere in Oregon's Willamette Valley. The aphid first appeared on walnut trees in California near San Jose in 1952. By the following year it had spread over much of the walnut-producing area of the San Francisco Bay region. Recently the aphid has been found in Contra Costa, San Mateo, Butte, El Dorado, San Joaquin, Glenn, Sutter, Colusa, Tehama, Stanislaus, and Nevada counties.

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Dusky-veined walnut aphid studies

William H. Olson
Webmaster Email: wsuckow@ucanr.edu

Dusky-veined walnut aphid studies

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Publication Information

California Agriculture 28(7):18-19.

Published July 01, 1974

PDF  |  Citation  |  Permissions

Abstract

Abstract Not Available – First paragraph follows: IN 1928, THE EUROPEAN DUSKY-VEINED walnut aphid, Panaphis juglandis (Goeze), made its first appearance in the Western hemisphere in Oregon's Willamette Valley. The aphid first appeared on walnut trees in California near San Jose in 1952. By the following year it had spread over much of the walnut-producing area of the San Francisco Bay region. Recently the aphid has been found in Contra Costa, San Mateo, Butte, El Dorado, San Joaquin, Glenn, Sutter, Colusa, Tehama, Stanislaus, and Nevada counties.

Full text

Full text is available in PDF.

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