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Published on: May 10, 2020
Nano-fertilizers: A sustainable technology for improving crop nutrition and food security
Ali Murad Jakhar1, Irfan Aziz2, Abdul Rasheed Kaleri3
1School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang Sichuan 621010, China; Institute of Plant Sciences, University of Sindh, Jamshoro, Pakistan.
Abstract:
Excessive use of synthetic fertilizers cause economic burdens, increasing soil, water and atmospheric pollution. Nano-fertilizers have shown great potential for their sustainable uses in soil fertility, crop production and with minimum or no environmental tradeoffs. Nano-fertilizers are of submicroscopic sizes, have a large surface area to volume ratio, can have nutrient encapsulation, and greater mobility hence they may increase plant nutrient access and crop yield. Due to these properties, nano-fertilizers are regarded as deliverable 'smart system of nutrients'. However, the problems in the agroecosystem are broader than existing developments. For example, nutrient delivery in different physicochemical properties of soils, moisture, and other agro-ecological conditions is still a challenge. In this context, the present review provides an overview of various uses of nanotechnology in agriculture, preference of nano-fertilizers over the conventional fertilizers, nano particles formation, mobility, and role in heterogeneous soils, with special emphasis on the development and use of chitosan-based nano-fertilizers.
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