Three
clay pots marked S for soil, C for added compost and M for Miracle
Gro.
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I recently got it into my head that
since I was already planning to start some Brandywine
Pink variety tomato plants from Burpee, that I might as well
take a look at how some different starting soil mixes (and populations of microbes) might affect
the rate of growth! Note: This is not
a very scientific experiment – it's more of a fun project to
see what might happen...
For this 'experiment', I started out
with three identical clay
pots* and then added 3 soil mixes:
100% Miracle
Gro potting mix.
A 50-50 mix of Miracle Gro and regular
garden soil.
Regular garden soil mixed with compost
from my kitchen.
I planted just one seed into each pot
,(yes, I took a bit of a gamble there) and watered each pot with
enough distilled water to get the soil damp, but not soaked. A square
of plastic wrap was then placed over the top of each pot to help
conserve moisture and they were then placed in a room where the
average temperature was ~74ยบF.
[*Clay
pots! I used this type
of pot to help insure excellent drainage of the soil mixes –
plastic pots tend to stay overly damp and thus promote fungal growth
that can inhibit the growth of the young plants! Anyway, that was my
call on this experiment.]
[Soil:
The soil I used came
out of a well established raised bed – it is a clay
loam that has a good supply of earthworms in it - a sign that
that the soil is fertile with a good supply of organic matter!]
[Water
& pH: I used
distilled water – 50 ml initially and also tested the soil's pH –
it came out to 6.8. This is just about right for the garden soil. I
Miracle
Gro potting mix was also close to a neutral pH of 7 and it was
sterile.]