Re: [compost_tea] Re: Soil Sampling

From: David Loring <dloring3_at_cox.net>
Date: Fri, 22 Aug 2003 09:03:24 -0700

Yopu're right John, for a proper test you have to account for the action of=
 the water alone.

Dave
  ----- Original Message -----
  From: John Dunbar
  To: compost_tea_at_yahoogroups.com
  Sent: Thursday, August 21, 2003 7:38 PM
  Subject: RE: [compost_tea] Re: Soil Sampling


  Thanks David, this is the kind of reply I was looking for. If your obser=
vations and my paranoia are correct, then its important to maintain aeratio=
n 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 wi=
th 10 units of water (in the ACT, maybe over several times), then how can y=
ou separate out (or explain) the effect of extra water from the ACT drenche=
s without a separate test plot?
   
  Thanks,
   
  John Dunbar
  Texas
  -----Original Message-----
  From: dloring3 [mailto:dloring3_at_cox.net]
  Sent: Thursday, August 21, 2003 3:21 PM
  To: compost_tea_at_yahoogroups.com
  Subject: [compost_tea] Re: Soil Sampling


  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_at_yahoogroups.com, "John Dunbar" <jdunbar_at_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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Received on Fri Aug 22 2003 - 13:41:56 EDT

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