Vol. 12, Issue 3 (2023)

Author(s):
Jayasree B, Prasad TNVKV, Krishna TG and Sunitha N

Abstract:
In the present experiment, application of Nanoscale zinc oxide particles on post-harvest nutrient concentration of soils has been reported. The zinc oxide nanoparticles (n-ZnO) used in the current study were majorly prepared especially for agriculture purpose by modified oxalate decomposition method. These n-ZnO particles were characterized by using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), Dynamic light scattering (DLS) and X-ray diffraction analysis (XRD). Different sizes (mean size of 20, 25 and 30 nm) and concentrations (150, 200 and 400 ppm) of ZnO-nanoparticulates were applied (foliar spray) at 25 and 45 DAS to reveal their effects on groundnut crop in comparison to bulk ZnSO₄ and control. Recommended dose of N, P and K fertilizers are applied in all the treatments except in control. The results indicate that application of zinc nanoparticles did not influenced the macronutrients (N, P, and K) and micronutrient (Cu, Mn, Fe and Zn) concentration of soils even with the application of various sizes and concentrations.