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Induced increase of soft scale: Imbalance between scales and natural enemies on walnut trees in northern California results in scale population increases

California Agriculture > Volume 12 > Number 11  > research article 

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Authors

A. E. Michelbacher, University of California
Stephen Hitchcock, University of California

Publication Information

California Agriculture 12(11):13-13.

Published November 01, 1958

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Abstract

The principal natural enemies of soft scales attacking walnut trees in northern California are small winged parasites easily killed by trace amounts of insecticides. If undisturbed, the parasites are able to maintain the scale population much below an economic level.

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Induced increase of soft scale: Imbalance between scales and natural enemies on walnut trees in northern California results in scale population increases

A. E. Michelbacher, Stephen Hitchcock
University
of
California
Division of Agriculture
and
Natural Resources
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Induced increase of soft scale: Imbalance between scales and natural enemies on walnut trees in northern California results in scale population increases

California Agriculture > Volume 12 > Number 11  > 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

A. E. Michelbacher, University of California
Stephen Hitchcock, University of California

Publication Information

California Agriculture 12(11):13-13.

Published November 01, 1958

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

The principal natural enemies of soft scales attacking walnut trees in northern California are small winged parasites easily killed by trace amounts of insecticides. If undisturbed, the parasites are able to maintain the scale population much below an economic level.

Full text

Full text is available in PDF.

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