Probable that clothianidin exposure caused bee mortality

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Allen Dick
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Probable that clothianidin exposure caused bee mortality

Unread post by Allen Dick » February 7th, 2011, 10:33 am

The PMRA concluded that it is highly probable that exposure to clothianidin caused the bee mortality in Ste-Martine
http://www.hc-sc.gc.ca/cps-spc/pubs/pes ... ex-eng.php
Allen Dick, RR#1 Swalwell, Alberta, Canada T0M 1Y0
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cam bishop
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Re: Probable that clothianidin exposure caused bee mortalit

Unread post by cam bishop » February 8th, 2011, 4:20 am

I wonder if clothianidin and coumaphos together are more deadly together, than separately? Could be some interaction between them. I had several nucs around a corn field this year and there were no problems, built up well. But there was no coumaphos used in the hive and the nucs were foundationless, so it's highly doubtful there was any interaction. Just a thought.
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circle7honey.com
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Allen Dick
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Re: Probable that clothianidin exposure caused bee mortalit

Unread post by Allen Dick » February 8th, 2011, 7:14 am

There has been some work done on various interactions. In some cases, two pesticides are additive, and other times, one may actually reduce the effect of the other. Not sure about this specific combination.
Allen Dick, RR#1 Swalwell, Alberta, Canada T0M 1Y0
51° 33'39.64"N 113°18'52.45"W
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