Surface damage to Japanese pear cv. Nijisseiki fruit by two-spotted spidermite, Tetranychus urticae, Koch.

Authors
Izawa, H
Citation
H. Izawa, Surface damage to Japanese pear cv. Nijisseiki fruit by two-spotted spidermite, Tetranychus urticae, Koch., JPN J A ENT, 43(2), 1999, pp. 97-99
Categorie Soggetti
Entomology/Pest Control
Journal title
JAPANESE JOURNAL OF APPLIED ENTOMOLOGY AND ZOOLOGY
ISSN journal
00214914 → ACNP
Volume
43
Issue
2
Year of publication
1999
Pages
97 - 99
Database
ISI
SICI code
0021-4914(199905)43:2<97:SDTJPC>2.0.ZU;2-P
Abstract
A high rate of abnormally stained fruit was produced by introducing the two -spotted spider mite, Tetranychus urticae Koch, into bagged fruit of the Ja panese pear cv. Nijisseiki, especially during July and August. Many punctur es made by the spider mites were observed on the stained lesions using SEM. This is a new type of damage called "usuzumi" (gray stain), caused by the two-spotted spider mite.