Biogenic synthesis of zinc nanoparticles from Thevetia peruviana and influence on soil exo-enzyme activity and growth of peanut plants.
Publication Date : 28/02/2015
Zinc nanoparticles were synthesized using Thevetia peruviana leaves extract and characterized using different spectroscopic (Ultraviolet-Visible and Fourier Transform Infrared Spectroscopy) and microscopic (Particle size analyzer, X- ray diffraction, Scanning and Transmission electron microscopy) techniques. Absorption spectrum of zinc nanoparticles showed broad absorption peaks at 327 nm and 254 nm. Average particle size and zeta potential were recorded as 53 nm and 82 mV respectively. Microscopy techniques revealed triangular shaped and poly-dispersed zinc nanoparticles. The synthesized zinc nanoparticles were applied to the pot-culture of peanut and studied soil micro-biota and soil exo-enzyme activities and estimated the physiological traits of peanut plants in 2 regular time intervals of 30 days and 60 days of sowing period. Zinc nanoparticles applied to the peanut pot-culture exhibited good soil microbial and enzyme activities by showing significant variations compared to the control and enhanced the physiological growth parameters of peanut plants.
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