There is no single scientific name for a soil bacterium. Soil is home to an incredibly diverse array of bacteria, each with its own unique scientific name.

Here are some examples of soil bacteria and their scientific names:

* Nitrogen-fixing bacteria:

* *Rhizobium* spp.

* *Bradyrhizobium* spp.

* *Azospirillum* spp.

* Decomposers:

* *Bacillus* spp.

* *Pseudomonas* spp.

* *Streptomyces* spp.

* Pathogens:

* *Salmonella* spp.

* *Escherichia coli*

* *Clostridium* spp.

To identify a specific soil bacterium, scientists need to isolate and analyze it using various methods like culturing, microscopy, and genetic analysis.