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.

http://www.viti.com.au/pdf/Rmjr0811VineyardBiodiversityandInsectInteractionsBookletFINAL.pdf

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