At the last vineyard walk held at Balancing Rock Wines, we discussed spray programs and effects of sprays on predatory mites. Michelle referred to a document by Mary Retallack on Integrated Pest Management. See link below if you are interested.
Another useful paper for those who want to delve deeper into fungicides which interfere with predatory mites. http://research.wineaustralia.com/wp-content/uploads/2012/09/DAV-98-1.pdf