Mycopathologia et mycologia applicata

, Volume 29, Issue 3–4, pp 339–349 | Cite as

Ecological studies on the microorganic population of usar soils

  • K. G. Mukerji
Article

Summary

Soils with pH varying from 7.1 to 11.0 were randomly selected for investigation of the microorganic population in relation to certain ecological factors. The number of microorganisms was highest at the upper horizon of soil. While no definite correlation was obtained between the average number of bacteria per gram of soil and the soil-pH, the fungi showed a progressive decrease in the number from 7.1 to 10.8, beyond which they were absent. The number of fungi increased during rains and that of the bacteria during winter. One hundred twenty-three fungi were isolated and their frequency percentage varied during different months of the year. Aspergilli were the dominant forms in alkaline soils. During the course of these investigations, one genus and six new species were discovered; twenty-two species of fungi isolated for the first time from Indian soils and five species from soil in general.

Keywords

Aspergillus Ecological Study Ecological Factor Progressive Decrease Dominant Form 

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Copyright information

© Uitgeverij Dr. W. Junk 1966

Authors and Affiliations

  • K. G. Mukerji
    • 1
  1. 1.Department of BotanyUniversity of DelhiDelhi 7India

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