Applied Microbiology and Beneficial Microbes

Soil Microbiology

Soil microbiology is the study of microorganisms in soil, their functions, and how they affect soil properties. It is believed that between two and four billion years ago, the first ancient bacteria and microorganisms came about on Earth's oceans. These bacteria could fix nitrogen, in time multiplied, and as a result released oxygen into the atmosphere. This led to more advanced microorganisms, which are important because they affect soil structure and fertility. Soil microorganisms can be categorized as bacteria, actinomycetes, fungi, algae and protozoa. Each of these clusters has features that define them and their functions in soil. Up to 10 billion bacterial cells inhabit each gram of soil in and around plant roots, a region known as the rhizosphere.

• Soil Biochemistry
• Ecology
• Ecosystems
• Microorganisms
• Microbial Communities
• Soil Microorganisms