*8.2.2 Biofertilizers*

Drawbacks (a) short shelf life, (b) temperature sensitivity and (c) storage & desiccation problem.

Solution: Polymeric nano-particle for coating (resistance against desiccation), Water in oil emulsion technique, Hydrophobic silica nano-particle addition.

Gold nano-particles increase the growth of *Pseudomonas flurescence*, *Pseudomonas elgii*, and *Bacillus subtilis* which are considered nano-bio fertilizers.
