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Insecticides evaluated for lettuce root aphid control

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Authors

Nick Toscano , University of California
Ken Kido
Marvin J. Snyder
Carlton S. Koehler
George C. Kennedy, North Carolina State University
Vahram Sevacherian

Publication Information

California Agriculture 31(4):4-5.

Published April 01, 1977

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Abstract

Abstract Not Available – First paragraph follows: The lettuce root aphid, Pemphigus bursarius L., can cause considerable damage to crops of summer head lettuce. Its primary host is the Lombardy poplar, Populus italica var. nigra. The aphids, or “stem mothers,” which hatch in the spring from eggs that have overwintered on the poplar, cause hollow, flask-shaped galls to develop on the leaf petioles (fig. 1). The stem mother becomes enclosed within the gall, where it matures and gives rise to between 100 and 250 young.

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Author notes

Photographs were taken by Max Clover, Principal Photographer, and the graph was made by John V. Chambers, Extension Educational Media Specialist, and William Johnson, Senior Artist, U. C., Riverside.

Insecticides evaluated for lettuce root aphid control

Nick Toscano, Ken Kido, Marvin J. Snyder, Carlton S. Koehler, George C. Kennedy, Vahram Sevacherian
Webmaster Email: wsuckow@ucanr.edu

Insecticides evaluated for lettuce root aphid control

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

Authors

Nick Toscano , University of California
Ken Kido
Marvin J. Snyder
Carlton S. Koehler
George C. Kennedy, North Carolina State University
Vahram Sevacherian

Publication Information

California Agriculture 31(4):4-5.

Published April 01, 1977

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Abstract Not Available – First paragraph follows: The lettuce root aphid, Pemphigus bursarius L., can cause considerable damage to crops of summer head lettuce. Its primary host is the Lombardy poplar, Populus italica var. nigra. The aphids, or “stem mothers,” which hatch in the spring from eggs that have overwintered on the poplar, cause hollow, flask-shaped galls to develop on the leaf petioles (fig. 1). The stem mother becomes enclosed within the gall, where it matures and gives rise to between 100 and 250 young.

Full text

Full text is available in PDF.

Author notes

Photographs were taken by Max Clover, Principal Photographer, and the graph was made by John V. Chambers, Extension Educational Media Specialist, and William Johnson, Senior Artist, U. C., Riverside.


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