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Re: [compost_tea] Pre-emergents



We've worked on the Surflan before, and it has significant effects on the biology.  I don't recall off-hand what group was affected.  I would need to direct you to Rich Brandel since it is with him that we hav been doing this work.  I have copied this e-mail to him, and perhaps he will remind me, and hopefully tell you, of the results of his testing.

I am not aware that we have any actual data on Casaron or Ronstar.  These would need to be tested.  The simple way to do this would be to leave several greens not-sprayed with the herbicides, and spray the ones that need spraying, then in 24 to 48 hours, take samples from all the sprayed greens and combine them, samples from the not sprayed greens and combine them, and send for analysis to SFI.  We'd want to do the full foodweb, since you'd want to know if you knocked out root-feeders, or mycorrhizal fungi, or protozoa, as well as the bacteria or fungi.

OK?

Elaine Ingham
President, Soil Foodweb Inc.
www.soilfoodweb.com
SFI Oregon, USA
SFI Australia
SFI New York
SFI Europe
SFI New Zealand

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