Quote:
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Ginger, I thought I read somewhere that it is the blue sticky traps which most atraccts thrips.
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That was me, in your blossom drop thread. I read it in some document
on thrip management about the same time.
Here we go:
Quote:
Monitoring Population Levels
Thrips can be monitored by placing blue sticky cards throughout the
greenhouse. Sticky cards should be placed near vents, doors, and
periodically throughout the greenhouse. Treatment thresholds will
depend on the type of crop and the presence of TOSPO viruses.
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http://pubs.ext.vt.edu/444/444-281/444-281.html
It could be that both blue and yellow sticky traps will catch
thrips, and for garden pest control one might want to use
one of each wherever you place them (instead of one or
the other) if one can get both kinds for a reasonable price.
(One could also get Tangle-Trap in a can and apply it your
own card stock, but I do not know if that would really be
cheaper.)