feldon30, that article is similar to one that I read (may have been the same authors) that also advocated the use of spinosad. I found it in a small quantity at Garden's Alive in the product Bulls-Eye. Peaceful Valley (groworganic.com) also has a smaller container by Monterey.
It is supposedly less toxic to beneficials (though still very toxic to bees). I used it very sparingly and found it effective at killing the thrips. The problem is that once you see thrips on the plants they can already be infected w/TSWV.
I have also used aluminum foil on earth boxes instead of the plastic mulch. Not much of a test though because the plants quickly grew and covered the foil thereby completely defeating its purpose.
Recently had a conversation with 2 certified organic growers who grow south of me and they have never experienced TSWV. They are in the heart of tomato growing land. They recommended releasing beneficials that control thrips. I had considered this a couple years ago but never got around to it. I will look into it again.
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"When we kill off the natural enemies of a pest we inherit their work."
Carl Huffaker
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