Agri-nanotechnology has the potential to transform the agricultural practices. Nanoparticles of interest can be produced both by various physical and chemical methods. The biogenetic production of nanoparticles is now of high interest due to simplicity of the procedures and their versatility. Several species of bacteria and plants are able to synthesize nanoparticles or help in the process of their production. Implementation of nanoparticlebased smart delivery system and nanosensors holds the promise of controlled release of agrochemicals and site-targeted delivery of various macromolecules needed for improved plant disease resistance, effi cient nutrient utilization and improved plant defence in an environment-friendly manner. Nanoparticle-mediated plant transformation has the potential for genetic modifi cation of plant improvement.

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