State the soil micro-organisms?

1. Bacteria
2. Fungi
3. Protozoa
4. Algae
5. Actinomycetes
6. Nematodes
7. Arthropods

Bacteria

- Aerobic bacteria (e.g., Nitrosomonas, Nitrobacter)
- Anaerobic bacteria (e.g., Clostridium, Bacillus)

Fungi

- Mycorrhizal fungi (e.g., Glomus, Gigaspora)
- Saprophytic fungi (e.g., Aspergillus, Penicillium)
- Parasitic fungi (e.g., Fusarium, Rhizoctonia)

Actinomycetes

- Streptomyces
- Nocardia

Protozoa

- Amoebae
- Ciliates
- Flagellates

Nematodes

- Helicotylenchus
- Pratylenchus

Viruses

- Tobacco mosaic virus
- Cucumber mosaic virus

Cyanobacteria (Blue-Green Algae)

- Anabaena
- Nostoc

Algae

- Chlamydomonas
- Chlorella