Bio-Fertilizer

Rhizobium leguminosarum.

 The term  Bio-Fertilizer Itself  defines by its term. Bio means living and Fertilizer means a chemical which enrichment nutrient on soil. Bio-Fertilizer may be Bacteria,CyanoBacteria or Fungi.This types of organism helps in improve soil fertility.But  some Bio-Fertilizer are created from Environment like NitrogenFixation.i.e 
        N₂ + 8 H⁺ + 8 e⁻ → 2 NH₃ + H₂

Nitrogen fixation is the phenomenon of conversion of free Nitrogen of Atmospheric into nitrogenous salts which are readily absorbed by the Plants's Rhizobium. Rhizobium are Gram -Ve. Its a Aerobic and Motile rod shaped bacterium . There are 6 types of Rhizobium

.1>R.leguminosarum

.2> R.Phascoli

3> R. Trifoli

4> R.Meliloti

5>R.Japanicum

6>R.Lupini