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Population densities and economic injury levels of grape leafhopper

California Agriculture > Volume 23 > Number 4  > research article 

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Authors

F. L. Jensen
D. L. Flaherty, University of California
L. Chiarappa, DiGiorgio Fruit Corp.

Publication Information

California Agriculture 23(4):9-10.

Published April 01, 1969

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Abstract

WHEN THE GRAPE integrated control project was started in 1961, the grape leafhopper, Erythroneura elegantula Osborn, was believed to be the primary pest of vineyards in the San Joaquin Valley. Also, it was believed that chemical treatments to control this insect were responsible for the increase of secondary pests such as spider mites. The basic aim of these studies was to determine what levels of leafhoppers could be tolerated without need of chemical treatments.

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Population densities and economic injury levels of grape leafhopper

F. L. Jensen, D. L. Flaherty, L. Chiarappa
University
of
California
Division of Agriculture
and
Natural Resources
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Population densities and economic injury levels of grape leafhopper

California Agriculture > Volume 23 > Number 4  > research article 

< Previous | Table of Contents | Next >

< Previous | Table of Contents | Next >

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

F. L. Jensen
D. L. Flaherty, University of California
L. Chiarappa, DiGiorgio Fruit Corp.

Publication Information

California Agriculture 23(4):9-10.

Published April 01, 1969

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

WHEN THE GRAPE integrated control project was started in 1961, the grape leafhopper, Erythroneura elegantula Osborn, was believed to be the primary pest of vineyards in the San Joaquin Valley. Also, it was believed that chemical treatments to control this insect were responsible for the increase of secondary pests such as spider mites. The basic aim of these studies was to determine what levels of leafhoppers could be tolerated without need of chemical treatments.

Full text

Full text is available in PDF.

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