PLB quoted "There was a synergistic interaction" (between simultaneously increasing pollination and pest control)".
Synergism can have negative effects as well as positive ones. Many papers point this out....a few examples from the beginning of the author alphabet:
Alaux, C; Brunet, J L; Dussaubat, C; Mondet, F; Tchamitchan, S; Cousin, M; Brillard, J; Baldy, (2010). Interactions between Nosema microspores and a neonicotinoid weaken honeybees (Apis mellifera). Environmental Microbiology 12: 774-782.
Aufauvre, J., D. G. Biron, et al. (2012). Parasite-insecticide interactions: a case study of Nosema ceranae and fipronil synergy on honeybee. Scientific Reports 2: 326. doi:10.1038/srep00326
Boily, Monique, et al. "Acetylcholinesterase in honey bees (Apis mellifera) exposed to neonicotinoids, atrazine and glyphosate: laboratory and field experiments." Environmental Science and Pollution Research (2013): 1-12.
I am bothered that some draw their conclusions about pesticides based on results obtained in isolation; meaning if a study shows no sublethal effect of substance "X" on a healthy colony, that's the end of the inquiry for those people. Medhat has told us many times that neonics are safe on canola in Canada, but beekeepers near curcubit crops have had losses directly attributable to neonics. And more examples have been given here for both "no effect" and "severe effect". So clearly, there must be some synergy concerns.
We know that there is less than thorough oversight of pesticide application methods, and that many farmers apply pesticide/herbicide/fungicide "cocktails" to efficiently lighten their workload by reducing the number of applications they have to conduct. From the advertising literature I have read by Bayer and Monsanto, they are not big advocates of IPM and claim that their chemical control methods, when used regularly and as instructed, are the best ways to control major pests.
I agree with Stan and Roy. IPM is a sensible way to maximize crop yields and minimize pest problems. It has the least side effects for the environment. But it requires some thought, and planning, and study.....so probably it won't be easy to implement.
There's a story out right now about a family on holiday in the Caribbean who were poisoned by methyl bromide as a result of pesticide applications on the neighboring property: see http://www.nbcnews.com/health/health-news/pesticide-vacation-n336576
Christina
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