Everything you need to know about soil microbiology. Some of the most frequently asked exam questions are as follows:- Q.1. Name the bacterium that prey on other bacteria. Ans: Bdellovibrio. Q.2. Give some examples of mutualism (symbiosis) in which both organisms are benefitted. Ans: (1) Association of fungus and alga in lichens. (2) Protozoa serving as host to single celled [...]
The major external factors that influence the microbial community in soil are: 1. Soil Moisture 2. Organic and Inorganic Chemicals 3. Soil Organic Matter 4. Types of Vegetation and its Growth Stages 5. Different Seasons. Factor # 1. Soil Moisture: Moisture is present in the form of film in soil pores. The amount of water increases with increase in porosity [...]
In this article we will discuss about:- 1. Origin of Rhizosphere 2. Reasons of Increased Microbial Activity in Rhizosphere 3. Rhizosphere Microorganisms 4. The Rhizosphere Effect 5. Rhizosphere Engineering. Origin of Rhizosphere: In 1904, L. Hiltner for the first time coined the term 'rhizosphere' to denote the area of intense microbiological activity that extends several millimeters from the root system [...]