Re: [compost_tea] Re: What's the problem with dormant spores?
check out the one that is selling product as certified organic compost tea =
which is no more than a leachate and sold in 500ml and 1000ml sealed bottle=
s, the product has been around along time and is a good product, is it comp=
ost tea?
check them out and pass comment to them; www.biofeed.co.nz
Matt how are the test results for the company you work for?
regards
Bill Quinn.
----- Original Message -----
From: Matt Leamy
To: compost_tea_at_yahoogroups.com
Sent: Thursday, December 04, 2003 11:18 PM
Subject: Re: [compost_tea] Re: What's the problem with dormant spores?
Hi all
There is an issue with a company who have set up to commercially supply C=
T , with no As, which are brews that are extracts from vermicast that suppl=
y spores. (They are not calling it CT). They tell me that they are extrac=
ting the full range of beneficial spores, I have yet to see testing that su=
pports this claim. They also tell me that SFI testing is of no value to th=
em as this does not count spores and they are not trying to make an active =
brew.
However, This product is making a significant impact on the market and t=
herefore bares scrutiny. I have found myself in discussion with growers an=
d the manufacturer. This is where I need help. The idea that they are sup=
plying a high diversity of spore extracted from vermicast is surely sound. =
I believe the brewing process has low O2 input and no foods apart from wha=
t is in the vermicast. It is an extraction not a brew.
However will those conditions still brew the anaerobic bacteria that will=
deplete the population of beneficial spores? Those spores survive anaerob=
ic conditions.
Will the low level of O2 and the limited food sources in the vermicast be=
enough to suppress the activity of the anaerobic bacteria and potentially =
damaging metabolites? It certainly smells OK. No strong smell.
Perhaps the brew actually is activating certain microbes that will end up=
dominating the product and limiting the diversity that they are claiming? =
Is there a relevant test that they could use to verify the product?
Perhaps questions without good answers?
Any thoughts? Any experience with similiar products would be helpful. =
Cheers
Matt Leamy
--- In compost_tea_at_yahoogroups.com, soilfoodweb_at_a... wrote:
> Dormant spores don't stay on the leaf surface. They have to be
active in order to stay on the leaf.
>
> As part of a soil drench, spores are fine.
>
> But if you are trying to understand soil processes, including
spores as part of a PROCESS assessment, such as occurs when using
plate media, just isn't kosher.
>
> Elaine Ingham
> President, Soil Foodweb Inc.
> SFI Corvallis, OR
> SFI Port Jefferson, NY
> SFI Lismore, NSW, Australia
> SFI Hilversum, The Netherlands
> SFI Cambridge, New Zealand
> www.soilfoodweb.com
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Received on Fri Dec 05 2003 - 00:08:27 EST
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