Soil - Organic Matter

Organic Matter

The organic soil matter includes all the dead plant material and all creatures, live and dead. The living component of an acre of soil may include 900 lb of earthworms, 2400 lb of fungi, 1500 lb of bacteria, 133 lb of protozoa and 890 lb of arthropods and algae.

Most living things in soils, including plants, insects, bacteria and fungi, are dependent on organic matter for nutrients and energy. Soils have varying organic compounds in varying degrees of decomposition. Organic matter holds soils open, allowing the infiltration of air and water, and may hold as much as twice its weight in water. Many soils, including desert and rocky-gravel soils, have little or no organic matter. Soils that are all organic matter, such as peat (histosols), are infertile. In its earliest stage of decomposition, the original organic material is often called raw organic matter. The final stage of decomposition is called humus.

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Other articles related to "organic matter, organic":

Organic Matter - Vitalism
... The equation of "organic" with living organisms comes from the now-abandoned idea of vitalism that attributed a special force to life that alone could create organic ...
Cation-exchange Capacity - Organic Matter
... Organic materials in soil increase the CEC through an increase in available negative charges ... As such, organic matter build-up in soil usually positively impacts soil fertility ... However, organic matter CEC is heavily impacted by soil acidity as acidity causes many organic compounds to release ions to the soil solution ...
Nutrient Management in Sand-based Athletic Fields
... Sand has virtually no CEC, whereas clay and organic matter have relatively high CEC ... This means that the higher the clay and organic matter of a soil, the more nutrients it will hold ... The pure sand base will not hold on to nutrients until there is substantial organic matter incorporated into the soil to keep nutrients from leaching ...
Sand-based Athletic Fields - Aeration and Topdressing For Proper Thatch Management
... When there is a thick mat of organic matter near the surface of a field a second perched water table will form ... Taking up plugs and removing them from the surface eliminates much of the organic matter that is in the soil ... This is because they do not reduce the organic layer, but merely displace it ...
Soil Biodiversity - Soil Management and Biodiversity - Soil Process Impacts
... below the root zone inappropriate use of nitrogenous fertilizers and build up of organic matter (Slattery Hollier, 2002) ... as a result of reduced microrganisms and organic matter – this brings a susceptibility to erosion under high rainfall events, drought and agricultural disturbance (Slatter ... Soil erosion leads to a loss of topsoil, organic matter and nutrients it breaks down soil structure and decreases water storage capacity, in turn reducing fertility and the ...

Famous quotes containing the words matter and/or organic:

    A matter that becomes clear ceases to concern us.—What was that god thinking who counseled, “Know thyself!” Did he perhaps mean, “Cease to concern yourself! Become objective!”—And Socrates?—And “scientific men”?
    Friedrich Nietzsche (1844–1900)

    The best thing about the sciences is their philosophical ingredient, like life for an organic body. If one dephilosophizes the sciences, what remains left? Earth, air, and water.
    Novalis [Friedrich Von Hardenberg] (1772–1801)