Thank You .
jose
-----
Thiobacteria, or bacterial species that require oxidized sulfur to serve
as electron acceptors in the last step of the cytochrome respiratory
chain in order to produce energy, typically require anaerobic
conditions.
They produce some really nasty organic acids, and reduced sulfur
compounds that we all know and love as rotten egg odors.
Thiobacillus is one typical genera of these kind of bacteria.
Under aerobic conditions, there are a huge variety of bacteria AND FUNGI
that will immobilize calcium sulfate, calcium sulfide, and other forms
of S as their biomass, and incorporate that S into waste materials, that
will be used by some other organism as food.
Clearly the bacterial inoculum used in the commercial process is one of
those bacterial species.
So, addition of a food resource for bacteria or fungi after having
reacted sulfur with lime (e.g., calcium hydroxide) will exit the "salt
effect" of adding gypsum (calcium sulfate) to the soil, because the
organisms have turned that "salt" into a wide diversity of organic
materials that do not have osmotic shock capacity.
Anything biologically activated by having organisms turn the inorganic
compounds into organic compounds UNDER AEROBIC CONDITIONS (please,
listen to that part, aerobic conditions), will help keep that nutrient
from leaching below the rooting zone, be more available for mycorrhizal
fungi to utilize, and will, if the right biology is present, be more
easily available for plant uptake at the right time and in the right
place.
Some really interesting work is being done by Paul Hendrix, and David
Coleman at the University of Georgia on the spatial dynamics of nutrient
cycling processes. I think Phil Robertson at Michigan State University
is also working on these, as well as Diana Wall's research program at
Colorado State University. If you want more detail on these processes,
and the most recent research results, those are the people to contact.
Elaine Ingham
President, Soil Foodweb Inc.
www.soilfoodweb.com
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Received on Sun Dec 01 2002 - 21:34:54 EST