Chemical and Biological Synthesis, Characterization and Control Release Pattern of Iron Nanoparticles (Fe Nps) Under Incubation Experiment in Typic Haplustepts and Typic Ustifluvents Soil Rokana Satdev1, Mandal Nintu1,*, Singh Mahendra1, Pradhan Amit Kumar1, Ghosh Mainak2, Sadhu Souvik1, Kumari Shruti1, Kumar Rakesh1 1Department of Soil Science and Agricultural Chemistry, Bihar Agricultural University, Sabour, Bhagalpur-813210, India 2Department of Agronomy, Bihar Agricultural University, Sabour, Bhagalpur-813210India *Corresponding author’s email: <nintumandal@gmail.com>
Online Published on 27 June, 2023. Abstract Deficiency of Fe is a widespread phenomenon globally. Conventional Fe fertilizer of FeSO4.7H2O reported to have very low Fe use efficiency (1-5%). Hence, technological interventions need to be explored for increasing Fe use efficiency. Chemical and biological synthesized nano Fe nanoparticles were characterized by employing X-ray diffraction; Scanning Electron Microscopy, and Dynamic Light Scattering techniques. Fe (Chem) and Fe (Bio) were characterized in comparison with Fe-EDDHA and FeSO4.7H2O in laboratory incubation experiment. DTPA extractable Fe, Mn, Zn and Cu were measured during incubation periods of 0 to 60 days in two soils namely Typic Haplustepts (Alluvial) and Typic Ustifluvents (Calcareous). Released pattern of Fe in two soils showed significantly higher under Fe-NPs (Bio.)> Fe (Chem.) > Fe-EDDHA followed by FeSO4.7H2O at different incubation days i.e. 0, 15, 30, 45 and 60 days. DTPA extractable Fe released from Typic Halpustpts (37.56 mg kg-1) and Typic Ustifluvents (36.05 mg kg-1) were significantly higher under bacterial synthesized nanoscale Fe followed by chemically synthesised Fe nanoparticles at 60 days after incubation, respectively. As far as Fe availability and control-released pattern were concerned, biologically synthesized nano-Fe was far more efficient than chemical synthesized novel Fenanoparticles followed by Fe-EDDHA and conventional FeSO4.7H2O. Typic Haplustepts (Alluvial) soil released higher Fe followed by Typic Ustifluvents (Calcareous) soil during incubation periods. Therefore, biological and chemical synthesized nano-Fe function with better ease than conventional applied micronutrients. Top Keywords Amending iron deficiency, DTPA-Fe, Dynamic Light Scattering, Iron deficiency, Scanning Electron Microgram, X-ray diffraction. Top |