In this article we will discuss about the definition of soil fertility. Soil fertility is the sustainable capacity of a soil to produce good yields of high quality on the basis of chemical, physical and biological factors. The three factors are needed to assess soil quality or fertility. Much work has been done on physical, chemical, climatic and cultivation data. [...]
The following points highlight the six important groups of extremophiles. The groups are: 1. Acidophiles 2. Alkalophiles 3. Halophiles 4. Psychrophiles 5. Thermophiles and Hyperthermophlies 6. Barophiles. Group # 1. Acidophiles: Most natural environments on the earth are essentially neutral, having pH between 5 and 9. Only a few microbial species can grow at pH less than 2 or greater [...]
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 [...]