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 [...]
After reading this article you will learn about the symbiotic and non-symbiotic nitrogen fixing bacteria. Symbiotic N2-Fixing Bacteria: The heterotrophic bacteria that fix di-nitrogen gas (N2) from the atmosphere in plant root nodules (symbiotic bacteria) have a mutually beneficial relationship with their host plants. Legumes (pod-bearing plants such as peas, beans, alfalfa and clovers etc.) had a beneficial effect upon [...]