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Biological, Chemical and Integrated Control of Two-spotted Spider Mite Tetranychus urticae on Dwarf Hops

✍ Scribed by Lilley, Richard; Campbell, Colin A. M.


Book ID
127344192
Publisher
Taylor and Francis Group
Year
1999
Tongue
English
Weight
189 KB
Volume
9
Category
Article
ISSN
0958-3157

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Colupulone, the main component of the beta-acid fraction of hop extracts, was shown to repel the two-spotted spider mite Tetranychus urticae Koch from the surface of plant leaves. The total beta-acid fraction was found more effective in repelling the mites and reducing the number of eggs laid than c