After reading this article you will learn about the meaning and habitats of brackish water. Meaning of Brackish Water: Brackish water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers. The word comes [...]
This article throws light upon the three reactions by which phosphate fixation takes place in soils. The reactions are: 1. Adsorption 2. Isomorphous Replacement 3. Double Decomposition. Reaction # 1. Adsorption: Adsorption reactions may be classified into two types – (a) physical—phosphate held on the soil solid surface and (b) chemical adsorption—retained phosphate penetrates more or less uniformly into the [...]
This article throws light upon the seven major conditions affecting activities of micro-organisms present in soil. The conditions are: 1. Moisture 2. Soil Reaction 3. Temperature 4. Nutrients 5. Organic Matter 6. Microbial Products 7. Microbial Enemy. Condition # 1. Moisture: Dryness kills many microbes and many micro-organisms develop resistant strains or enter a dormant stage. Micro-organisms are less active [...]