Agricultural microbiology

Agricultural microbiology is a branch of microbiology dealing with plant-associated microbes and plant and animal diseases. It also deals with the microbiology of soil fertility, such as microbial degradation of organic matter and soil nutrient transformations.

Soil microorganisms

Bacteria:- more dominant group of microorganisms in the soil and equal to one half of the microbial biomass in soil. Population 100,000 to several hundred millions for gram of soil - Autochthnous - Zymogenous groups. Majority are Heterotrophs. (Common soil bacteria - Arthrobacter, Bacillus, Clostridium, Micrococcus).

Actinomycetes - intermediate group between bacteria and fungi. Numerous and widely distributed in soil. Abundance is next to bacteria. 104 - 108/g soil. 70% of soil actinomycetes are Streptomyces. Many of them are known to produce antibiotics. Population increases with depth of soil.

Fungi: More numerous in surface layers of well-aerated and cultivated soils-dominant in acid soils. Common genera in soil are Aspergillus, Mucor, Penicillium Trichoderma, Alternaria, Rhizopus. Algae – found in most of the soils in number ranges from 100 to 10,000 per g.

Protozoa: Unicellular – population ranges from 10,000 to 100,000 per g of soil. Most of the soil forms are flagellates, amoebae or ciliates. Derive their nutrition by devouring soil bacteria. Abundant in upper larger of the soil. They are regulating the biological equilibrium in soil.

Importance of soil microorganisms
  • Involved in nutrient transformation process
  • Decomposition of resistant components of plant and animal tissue
  • Role in microbial antagonism

Example
  • DAP
  • UREA
  • SUPER PHOSPHATE
gollark: In retrospect, it would make much more sense to handle it differently. I could edit it now, actually.
gollark: I tried to pack as much information as possible ~~without very much work~~ into the URLs, so they also support base64'd base256 encoded numbers (yes this is a mess) and (really poorly done) RLE on those.
gollark: https://osmarks.tk/infipage/rz9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9z9 for example.
gollark: Besides, it's much more efficient to use the RLE capability.
gollark: How is that an exploit?

See also

References

    Further reading
    • G. Rangaswami (2004). Agricultural Microbiology. Prentice-Hall of India Pvt.Ltd. ISBN 81-203-0668-6.
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