REPELLENT AND OVIPOSITION-DETERRING EFFECTS OF HOP BETA-ACIDS ON THE 2-SPOTTED SPIDER-MITE TETRANYCHUS-URTICAE

Authors
JONES G CAMPBELL CAM PYE BJ MANIAR SP MUDD A
Citation
G. Jones et al., REPELLENT AND OVIPOSITION-DETERRING EFFECTS OF HOP BETA-ACIDS ON THE 2-SPOTTED SPIDER-MITE TETRANYCHUS-URTICAE, Pesticide science, 47(2), 1996, pp. 165-169
Citations number
12
Categorie Soggetti
Agriculture
Journal title
Pesticide science → ACNP
ISSN journal
0031613X
Volume
47
Issue
2
Year of publication
1996
Pages
165 - 169
Database
ISI
SICI code
0031-613X(1996)47:2<165:RAOEOH>2.0.ZU;2-X
Abstract
Colupulone, the main component of the beta-acid fraction of hop extrac ts, was shown to repel the two-spotted spider mite Tetranychus urticae Koch from the surface of plant leaves. The total beta-acid fraction w as found more effective in repelling the mites and reducing the number of eggs laid than colupulone at equivalent concentrations, suggesting that other components of the extract have repellent and oviposition-d eterring effects.