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Pear decline research

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Authors

W. H. Griggs, University of California
K. Ryugo, U.C.
R. S. Bethell
K. Uriu, U.C.

Publication Information

California Agriculture 16(6):9-10.

Published June 01, 1962

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Abstract

High summer temperatures appear to be an important contributing factor—in combination with psylla feeding—adding to tree losses from pear decline. Thus far, none of the sprays, ground applications, injections, or scoring treatments have had any discernible effect on the progress of pear decline. None of the treated or control trees improved, a few apparently held their own, but most have deteriorated.

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Pear decline research

W. H. Griggs, K. Ryugo, R. S. Bethell, K. Uriu
Webmaster Email: wsuckow@ucanr.edu

Pear decline research

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

W. H. Griggs, University of California
K. Ryugo, U.C.
R. S. Bethell
K. Uriu, U.C.

Publication Information

California Agriculture 16(6):9-10.

Published June 01, 1962

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

High summer temperatures appear to be an important contributing factor—in combination with psylla feeding—adding to tree losses from pear decline. Thus far, none of the sprays, ground applications, injections, or scoring treatments have had any discernible effect on the progress of pear decline. None of the treated or control trees improved, a few apparently held their own, but most have deteriorated.

Full text

Full text is available in PDF.

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