Submitted by sharpie on January 7, 2008

• Category: Science
• Words: 1435
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Earthworm, Microbial Diversity And Nitrogen

Abstract:

Diverse soil bacterial populations contribute to the better nutrient cycling and a nitrogen fixation. The presence of earthworms Lumbricus terrestris (L. terrestris) enhances the microbial activity and nitrogen uptake. In this study, direct plate count with dilution series methods were use to enumerate the microbial population from three different types of soil including leaf litter, organic soil and clay. The dilutions of 0.1ml were spread on the general medium agar. Plates were incubated at room temperature for 24-48 hours. The enumeration was performed twice; once after 24hour and then 48 hour. The mean of the population were taken to generate data. The...

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