This item was forwarded to me from another list in reference to Tenneke's new book: >Nevertheless, given the concentrations of neonicotinoids found in surface waters in the Netherlands, it would seem wise to determine how common at what concentrations these compounds (especially imidicloprid and clothianidin) are found in US surface waters and whether the presence of these compounds is associated with declines in invertebrates. I wholly agree on this point. High concentrations of neonics can occur when there is flooding of a field, resulting in accumulation in puddles, when planting equipment is washed out, or when a crop is replanted a second time in a season (essentially doubling the rate of application of the pesticide). A similar phenomenon may occur during chemigation during warm weather. Some of these occurrences are currently being quantified, but more should be done, so that we have a better understanding of the degree to which this happens in practice. Randy Oliver *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm