• Nanosized fertilizers are the new frontier of nanotechnology towards a sustainable agriculture.
    Here, an efficient N-nanofertilizer is obtained by post-synthetic modification (PSM) of nitrate-doped
    amorphous calcium phosphate (ACP) nanoparticles (NPs) with urea. The unwasteful PSM protocol
    leads to N-payloads as large as 8.1 w/w%, is well replicated by using inexpensive technical-grade
    reagents for cost-effective up-scaling and moderately favours urea release slowdown. Using the PSM
    approach, the N amount is ca. 3 times larger than that obtained in an equivalent one-pot synthesis
    where urea and nitrate are jointly added during the NPs preparation. In vivo tests on cucumber
    plants in hydroponic conditions show that N-doped ACP NPs, with half absolute N-content than in
    conventional urea treatment, promote the formation of an equivalent amount of root and shoot
    biomass, without nitrogen depletion. The high nitrogen use efficiency (up to 69%) and a cost-effective
    preparation method support the sustainable real usage of N-doped ACP as a nanofertilizer.

  • Department of Science and High Technology and To.Sca.Lab, University of Insubria, Via Valleggio 11, 22100, Como, Italy



    Copyright: © The Author(s) 2021

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