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RE: [compost_tea] Re: Soil Sampling
Thanks
David, this is the kind of reply I was looking for. If your observations
and my paranoia are correct, then its important to maintain aeration during the
application, as Robert Norsen points out in a later post.
Also,
what is your take on my other fear... that if you (or mother nature) applies 100
units of water during the test period, and then you drench with 10 units of
water (in the ACT, maybe over several times), then how can you separate out
(or explain) the effect of extra water from the ACT drenches without a
separate test plot?
Thanks,
John
Dunbar
Texas
If it takes even 10 minutes for you to
apply an active fresh tea to
your garden most of the Oxygen has been
consumed by the bacteria.
I've measured many teas after brewing and
watched the O2 meter drop
from 7+ppm to almost zero in less than 10
minutes. There just isn't
much Oxygen in water, that's why we have to
keep adding it so fast.
Not to say that the bacteria and fungi are
dying because the Oxygen
is gone but they definitely eat it up fast, so, in
my mind there is
no need for a "Oxygenated water" control in your
test.
Dave
--- In compost_tea@yahoogroups.com, "John Dunbar"
<jdunbar@d...>
wrote:
> In regards to testing, I would
like to know if there should be 3
different
> controls to compare
against ACT: 1) No application, 2) Water only,
3)
> Aerated
Water.
>
> I was thinking that Aerated Water may give ACT a run for
its money
if the
> application is a drench and the soils are not
aerated properly.
>
> Any comments?
>
> It would be
terrible if the big effect from ACT came from O2.
>
> Also, I
ordered Paul Sachs' book ("Edaphos: Dynamics of a Natural
Soil
>
System") and it is truly great. I'll be giving it a 5 star review
after I
> finish reading more of it. Right now I'm skipping
around in it.
Its a 200
> page paper back with lots of
information. Its easy to read, yet at
the same
> time it
contains so much information. Every page is underlined
heavily.
>
> John Dunbar
> Texas
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