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MORTALITY OF THE SAN JOSÉ SCALE (HOMOPTERA: DIASPIDIDAE) ON STORED APPLES OF DIFFERENT VARIETIES AND HARVEST DATES1

Published online by Cambridge University Press:  31 May 2012

C. V. G. Morgan  and
B. J. Angle
C. V. G. Morgan
Affiliation:
Research Station, Canada Department of Agriculture, Summerland, British Columbia
B. J. Angle
Affiliation:
Research Station, Canada Department of Agriculture, Summerland, British Columbia
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Abstract

The San José scale, Aspidiotus perniciosus Comstock, died within 8 to 22 weeks on McIntosh, Red Delicious, Common Delicious, Winesap, Rome Beauty, and Newtown apples harvested on commercial picking dates and placed in standard cold storage. The scale died in much shorter periods on early maturing varieties than on late maturing varieties.

The later a variety was harvested the longer the fruit had to be stored to kill the scale. The maximum storage period was 32 weeks for Winesaps and Newtowns harvested in early November, approximately 1 month after the commercial picking date.

The storage period required to kill the San José scale on Winesap apples varied from year to year, cool weather in early autumn apparently increasing the storage period.

Type
Articles
Information
The Canadian Entomologist , Volume 99 , Issue 9 , September 1967 , pp. 971 - 974
Copyright
Copyright © Entomological Society of Canada 1967

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References

Morgan, C. V. G. 1967. Fate of the San José scale and the European fruit scale (Homoptera: Diaspididae) on apples and prunes held in standard cold storage and controlled atmosphere storage. Can. Ent. 99: 650–659.CrossRefGoogle Scholar