Skip to Content.
Sympa Menu

livingontheland - [Livingontheland] Humus - Understanding the Soil Processes

livingontheland@lists.ibiblio.org

Subject: Healthy soil and sustainable growing

List archive

Chronological Thread  
  • From: "Tradingpost" <tradingpost@gilanet.com>
  • To: livingontheland@lists.ibiblio.org
  • Subject: [Livingontheland] Humus - Understanding the Soil Processes
  • Date: Sun, 04 Dec 2005 12:54:56 -0700


Humus - Understanding the Soil Processes
PETRIK LABORATORIES
http://www.petrik.com/PUBLIC/library/ups.html#humus

The natural life cycle of out fields must be kept functional through the
addition of organic matter after the residues from the previous crop have
been depleted in order to build new Bio-Organo-Mineral nutrition for our next
crop. This action connot be replaced with the water soluble salts or
overdoses of chemical fertilizer which destroy soil life, not build it.

During the growing season, as the plants fix carbon dioxide by
photosyntheses, about 10-25% of this fixed carbon,finds its way back to the
soil through the roots (root exudates) this is even if all residues including
roots are removed. This is very important in bio-organic farming.

The production of humus is a complex process. In general cyclic substances
like phenol groups and also other like organic acids and vitamins (humus is
also related to crude oil) are polymerized with help of enzymes,like phenol
oxidase. These cyclic compounds are both from plant parts(like lignin) and
are also produced by the microorganisms. Mostly fungi, actinomycetes
(Streptomycets) seem to be responsible for humus formation. Aspergillus,
Pisolithus, Rhizoctonia, Streptomycets are only but a few examples of
microorganisms actually capable of synthesizing cyclic(aromatic) compounds
and form them into humus from non-cyclic materials.

It is impossible for man to produce stable humus synthetically. Man can
properly cultivate the field, supply organic matter and so encourage the
development of stable humus in the soil. Soil with stable humus must always
be protected to maintain the fertility and productivity of the soil.

The production and maintenance of stable humus in the soil should be the
primary goal of every farmer. Good stewardship of the land is necessary to
protect and maintain mankinds most important asset, fertile soil.

For nearly one hundred years soil science in most schools of higher learning
(especially in agricultural colleges) has been primarily concerned with the
physical and mechanical aspects of soil structure. Biological thinking has
become a major concern only in the last few years.

The new approach considers not only the physical properties and mineral
structure of the soil,but also the process by which organic matter is
transformed into humus by microorganisms.




  • [Livingontheland] Humus - Understanding the Soil Processes, Tradingpost, 12/04/2005

Archive powered by MHonArc 2.6.24.

Top of Page