Difference between revisions of "Micro-organisms in the soil"
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* [http://en.wikipedia.org/wiki/Soil_Biomantle Soil biomantle] Wikipedia | * [http://en.wikipedia.org/wiki/Soil_Biomantle Soil biomantle] Wikipedia | ||
* [http://en.wikipedia.org/wiki/Soil_life Soil life] Wikipedia | * [http://en.wikipedia.org/wiki/Soil_life Soil life] Wikipedia | ||
| + | * [http://ohioline.osu.edu/sag-fact/pdf/0013.pdf The role of soil bacteria] The Ohio State University | ||
* [http://ohioline.osu.edu/sag-fact/pdf/0016.pdf Understanding Soil Microbes and Nutrient Recycling] The Ohio State University | * [http://ohioline.osu.edu/sag-fact/pdf/0016.pdf Understanding Soil Microbes and Nutrient Recycling] The Ohio State University | ||
Revision as of 08:50, 22 June 2012
- * Topic in Gardening courses
- * This page is under construction. If you have any ideas to contribute to this page, place a comment below in the Comments section. --JE 01:53, 14 June 2012 (PDT)
Provided there is a carbon source, microorganisms exist in large numbers in the soil.
Chunks of information
- Root nodules of the fava plant or broad bean. Each of these nodules contains billions of Rhizobia bacteria that live in symbiotic relationship to Fabaceae or the legume family (beans, peas). These bacteria fix nitrogen that is in the air and give it to the plant or remain in the soil for a next crop. They grow in healthy soils and reduce the need for fertilizing the soil.
List
- Actinobacteria, see Actinobacteria - Wikipedia
- Azotobacter, see Azotobacter - Wikipedia
- Cyanobacteria, see Cyanobacteria - Wikipedia
- Molds
- Penicillium, see Penicillium - Wikipedia
- Protozoa - Protozoa are single-celled eukaryotes (organisms whose cells have nuclei) that commonly show characteristics usually associated with animals, most notably mobility and heterotrophy.
- Rhizobia, see Rhizobia - Wikipedia
- Rotifers
- Roundworms
- Yeasts
Bacteria
Bacteria exist in large numbers in the soil. Because their size is small they have a rather small biomass compared to other soil microorganisms.
The nitrogen cycle
- Main article: Nitrogen cycle. See also Some science for the gardener, section Nitrogen cycle.
Mention only the involved bacteria here.
Actinobacteria
Actinobacteria or actinomycetes appear 10 times smaller in number in soils compared to bacteria but because their are larger in size, their total biomass is similar.
Rhizobium
Fungi
Although fungi are smaller in population numbers, they dominate the soil biomass in undisturbed soils. Bacteria, actinomycetes and protozoa can tolerate more soil disturbance and therefore dominate in tilled soils. Fungal populations tend to dominate in untilled soils.
Mycorrhizae
- Main article: Mycorrhiza
Penicillium
Algae
Protozoa
Nematodes
Nematodes, like fungi, are more present in untilled than in tilled soils.
See also
External links
- BENEFICIAL AND EFFECTIVE MICROORGANISMS FOR A SUSTAINABLE AGRICULTURE AND ENVIRONMENT Dr. Teruo Higa and Dr. James F. Parr, Japan 1994 (EM - Effective Micro-organisms)
- Cyanobacteria Wikipedia
- Mycorrhiza Wikipedia
- Rhizobia Wikipedia
- Root nodule Wikipedia
- Soil biomantle Wikipedia
- Soil life Wikipedia
- The role of soil bacteria The Ohio State University
- Understanding Soil Microbes and Nutrient Recycling The Ohio State University
Videos
Books
- Soil microbiology (1952) Author: Waksman, Selman A. (Selman Abraham), 1888-1973; 380 pages
