Market Farming

["Bob" <bob AT bidumup.com>]

So I wonder if you heterodyne a high frequency accross a known distance and
take a reading of intensity on meter for testing transistors if you would
not then get the same kind of density reading the refractometer is supposed
to give but have it against a know frequency and then have a more acurate
derivation therefore a more accurate reading of plant nutrition?
BobC
----- Original Message -----
From: "Paul A. Bock" <bockpa AT plesh.com>
To: "'Market Farming'" <market-farming AT lists.ibiblio.org>
Sent: Thursday, August 21, 2003 11:47 AM
Subject: RE: [Market-farming] Ohm meters, fulltime, frost seeding


> I still vote for the refractometers for plant analysis, but this is too
> interesting.  Sugars are present in the sap, but also the basic cations
(if
> they are hopefully present in your soil) will also be in the sap.  I will
> take a wild guess and say that the health of the plant would be
proportional
> to the concentration of these ionic nutrients.  Your Calcium, potassium
and
> phosphorus.
>
>
> >Remember from your basic chemistry/physics that
> >conductivity of a solution happens only when a
> >solution is made of ions, not nonionic solutes.  So,
> >in other words, a solution of table salt, which
> >disassociates into sodium and chloride ions, will
> >conduct electricity, showing up as non-infinite
> >resistance on an ohmmeter in proportion to its
> >concentration.  But a solution of sugar, which
> >consists of individual sugar molecules, will not
> >conduct electricity, always giving a reading of
> >infinite resistance no matter what the concentration.
>
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