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Interesting - shouldn't such plants be illegal under pesticide by-laws or provincial regulations restricting cosmetic pesticides? It may not be a factor in pollinator decline, but the use of broad-leaf herbicides on lawns (including chelated iron products now permissible under most pesticide by-laws) certainly doesn't help. I have been disappointed to see the return of The Perfect Lawn after HRM, a holdout, relented and accepted use of chelated iron products for weed control in 2011. Quoting Mary Macaulay <marymacaulay@hotmail.com>: > This came out today- maybe a partial explanation of what we're > seeing in spite of local pesticide bans. > > Link to story below quote > > ?The pilot study confirms that many of the plants sold in nurseries > and garden stores across the U.S. have been pre-treated with > systemic neonicotinoid insecticides, making them potentially toxic > to pollinators,? said Timothy Brown, PhD, of the Pesticide Research > Institute. ?Unfortunately, these pesticides don?t break down > quickly?they remain in the plants and the soil and can continue to > affect pollinators for months to years > > http://ecowatch.com/2013/plants-sold-bee-friendly-pretreated-with-pesticides/ > > > Mary Macaulay, P.Eng. > Executive Director > Atlantic Concrete Association > www.atlanticconcrete.ca > Office: 902-443-4456 > Cell: 902-489-2000 > Fax: 902-404-8074 > > On 2013-08-14, at 8:38 PM, "David & Alison Webster" > <dwebster@glinx.com> wrote: > >> Hi All, Aug 14, 2013 >> I wish to make a few additional comments about the Plos One >> paper; Pettis et al., 2013. >> >> Firstly, so far as I know CCD relates to Honey Bees only and >> circumstances that may be involved with CCD are not relevant to >> insect populations in general. >> >> This paper may turn out be valid. The real test is >> reproducibility. Will it be possible to obtain essentially the same >> results in each of 5 years using the same or different fields ? >> Time will tell. >> >> Yt, Dave Webster Kentville >> >> > David Patriquin http://versicolor.ca
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