I've got a BobOLator and a 22gal Earth Tea Brewer.
I'm ready to start testing. If my testing can tie into what you're proposing,
I'll be glad to participate.
We would all have to use the same compost
and the same ingredients, calibrated for brew size. That still doesn't
eliminate variables such as temperature, water quality, etc. But we could
still gain some useful insight.
Steve Bridges
BobO 50gal and EPM 22gal (good idea
Judi!)
----- Original Message -----
Sent: Friday, August 29, 2003 10:12
AM
Subject: Re: [compost_tea] Re: ACT
Dennis - You're right of course, it can't be done
with a single test. It wouldn't be fair whatever the outcome. Any
rigorous test would have at least four repetitions of the same
experiment. Maybe there are enough machines out there that we would have
at least two identical machines for each type manufactured. If there
were not really significant differences then that might tell the story.
I'm open to anything that will actually sort out some of these variables, even
those we expect in the lab results. Maybe Elaine would tell us what the
acceptable limits are for her lab testing in the sense of one sample being run
multiple times as a quality control test. I agree that there are limits
to what any lab can do. I don't know what to think at this point, I've
never sent paired, blind samples before. I would pay for one of the
samples though if someone paid for the other.
Dave
----- Original Message -----
Sent: Thursday, August 28, 2003 7:49
PM
Subject: [compost_tea] Re: ACT
---Dave, I was trying to point out there are many
variables included even in the testing, even of objective tests. I run a
flour sample here (myself) and do all the sample prep one day and do it
again the next day and get different numbers (vitamins B1 and B2 for
instance) each day. New variables the next day? Sample changed? Usually
the numbers are close but what do you do when it comes time for
disposition esp when numbers are not close? Maybe average, maybe
rerun sample, maybe get another sample? Maybe re-write the specs.?
Maybe throw out one for some reason. Anyway experimental design will
be important in the brewer tests. Dennis
In
compost_tea@yahoogroups.com, "David Loring" <dloring3@c...>
wrote: > Dennis - I agree with about 95% of what you've said but there
is a need for testing in my mind, not with someones hard found recipe,
but with a mutually agreed to compost and food of some kind.
Unless we can get information about the variability of these machines
then we're all on our own a bit and progress, much needed, will be
difficult. It's hard to extrapolate to new situations unless we
nail down the variables one at a time. I think the strength of
this forum is found in combining our sometimes expensive
experiences. I've spent a couple thousand on testing myself
without any product except that I teach. Those of us in the
non-commercial world stand to gain the most from sharing. If I can
pay for only one report and get the answers from 5-10 others I'd
consider it money well spent. > Dave > -----
Original Message ----- > From: dkemnitz2000
> To: compost_tea@yahoogroups.com >
Sent: Thursday, August 28, 2003 6:04 PM > Subject:
[compost_tea] Re: ACT > > > --- In
compost_tea@yahoogroups.com, "tomjasz" <tom@l...>
wrote: > > > >
> > > > Unfortunately, but
understandably the developers of the nutrient > >
packs have invested thousands of dollars in their "recipes". Two
> > developers I have conversations with aren't
particularly excited > > about having a
competition. They are busy with their farmers, fruit
> > growers and viticulturists developing successful
operations based > on > >
sustainable practice and using ACT as a part of the program. The
> > controlled testing has been going on with several
manufacturers for > > several years. The idea of a
competition borders on the ridiculous > > from my
perspective. What would such a competition achieve? >
> Apparently several tea systems are producing stellar results. Some
> > find the need to blather about and have NOT
achieved any consistent > > successes.(comment not
directed at list!) I continue to suspect > they
> > bandy about only the best of their tests. Other
manufacturers > > consistently produce high quality
tea without competitions or this > > list. Please
don't misunderstand that comment...there are over 300
> > members and about ten
posters!!! > > > > Thanks for the
invitation Tom! I already wrote Brewer Bob and this >
list two opinions earlier today which I cancelled for consideration
> to all. > I'd have
to say my bottom line is cost perhaps like many of you.
> I believe in tests, like Jeff. I am a lab tech in a
food testing lab > and don't make enough money to
hire tests on tea I'll use on a 65 > acre
farm. In our lab we use standard testing procedures. Some
> samples(duplicates) are sent to other labs to see how
we compare to > them. You might be suprised but
they don't get the same answer we > get any
way. Even labs(and brewers) must deal with accuracy and
> precision. > So I'll be
brewing, testing applying and reporting based on what I
> glean from this board and seminars and cd's and ATTRA
and whatever > else might work without hiring many
experts. I guess this is better > than spraying
pesticides herbicides and fertilizers. Dennis Kemnitz > >
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