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Walnut aphid management …aphid effects on walnut production and quality

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Authors

M. M. Barnes, University of California, Riverside
G. Steven Sibbett, Tulare County
C. S. Davis, University of California, Berkeley.

Publication Information

California Agriculture 25(5):12-12.

Published May 01, 1971

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Abstract

The two articles included here are from separate experiments. The first concerns the influence of walnut aphids on production and quality of Payne walnuts, on trees whitewashed in the normal practice for prevention of sunburn. This trial showed a marked loss of both production and quality resulting from aphid infestations. In the second trial, the walnuts were not whitewashed and were subjected to varying degrees of aphid infestation. The resulting evidence showed that most of the sunburn problem was aphid-related. If aphids were controlled, sunburn was reduced to a non-economic level. In orchards where codling moth was not a problem, a recently introduced parasite provided adequate aphid control.

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Walnut aphid management …aphid effects on walnut production and quality

M. M. Barnes, G. Steven Sibbett, C. S. Davis
Webmaster Email: wsuckow@ucanr.edu

Walnut aphid management …aphid effects on walnut production and quality

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

M. M. Barnes, University of California, Riverside
G. Steven Sibbett, Tulare County
C. S. Davis, University of California, Berkeley.

Publication Information

California Agriculture 25(5):12-12.

Published May 01, 1971

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

The two articles included here are from separate experiments. The first concerns the influence of walnut aphids on production and quality of Payne walnuts, on trees whitewashed in the normal practice for prevention of sunburn. This trial showed a marked loss of both production and quality resulting from aphid infestations. In the second trial, the walnuts were not whitewashed and were subjected to varying degrees of aphid infestation. The resulting evidence showed that most of the sunburn problem was aphid-related. If aphids were controlled, sunburn was reduced to a non-economic level. In orchards where codling moth was not a problem, a recently introduced parasite provided adequate aphid control.

Full text

Full text is available in PDF.

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