• Porous nanomaterials (ammonium charged zeolites, graphene oxide, and nanocalcite) reduce nitrogen loss in
considerable quantity by controlling the nutrient release
that enhances the plant uptake process.
• In controlled release fertilizers, the thickness of coating
and permeability determines the releasing time of the
fertilizer.
• Ammonium mixed zeolites enhance the solubility of
phosphate.
8 Conclusion
Nanofertilizer is the engineered nanomaterial prepared by
applying nanotechnology. Particles of this material are in the
nanometer size range. Due to the presence of nano-sized
particles (particularly size less than the plants cells), this new
generation fertilizer has an ability to reduce the fertilizer
consumption and to deliver the nutrients better than the
conventional fertilizers. It is observed from the literature that
the nanofertilizers will play a major role in the modern
agriculture. Engineered nanomaterials are applied in plant
stress, pathogens controlling, target delivery (gene transfer),
plants development, and soil enhancement. Nanomaterials
like magnesium hydroxide, carbon nanomaterials, ZnO
nanoparticles, and iron oxide nanomaterials are utilized in
pre-soaking of seeds and seed germination technology. They
improve the solubility of the nutrients. Some nanofertilizers
have good water retention capacity. Comparing to the conventional fertilizers, they release the nutrients and reduce the
nutrient loss in a better way. Slow and controlled released
nanofertilizers augment the plant growth that leads to higher
level plant productivity and crop yield.
Fertilizers are expected to do more functions like stimulation of soil microorganisms and mobilization of phosphorus and potassium to make them easily available to the
plants. To cope up with the agriculture market, a fertilizer
should be fast acting and long-lasting. The fertilizer should
provide support to better yield (with a uniform, dense, or full
growth) and eliminate entanglement. It should promote
humus formation and soil health. Advanced technologies
(like nanotechnology, nanofertilizers, and biofertilizers)
support to fertilizers for the supply of nutrients properly.
Acknowledgements The author expresses immense thanks to her
husband Mr. G. Sankar for his assistances in this work. Also, she
acknowledges the assistances of International Research Center, Kalasalingam Academy of Research and Education (Deemed University),
Krishnankoil-626 126, (India) for providing necessary supports and
facilities.
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