Synthesis and Characterization of Biochar Based Nanoscale Phosphorus and its Effect on Yield and Nutrient Uptake of Groundnut (Arachis hypogaea L.)

Abstract

The utilization of agricultural waste is of great concern to all and a challenging research area that needs special attention from the scientific community. The present study was carried out to synthesize the biochar-based nanoscale phosphorous and evaluate its effect on the growth and yield of groundnut (Arachis hypogaeaL.) under a pot culture experiment. Nano phosphorus particles were prepared using Stevia leaf extract as a reducing and stabilizing agent. Biochar-based phosphorus (BBP) and biochar-based nano phosphorus (BBNP) were prepared by loading the respective chemicals. Transmission electron microscopic micrographs showed relatively spherical-shaped particles with a size less than 100 nm. BBP and BBNP were tested in 26 different combinations with the recommended dose of phosphorus on the growth and yield components of groundnut. Among all treatments, 100% RDP+ soil application BBNPF @ 4 kg ha-1 and 100% RDP+ soil application BBPF @ 10 kg ha-1 showed significant plant growth, nutrient uptake, and yield. Thus, biochar-based nanoscale phosphorous significantly influences the growth, uptake, and yield of groundnut. The present study paves the way to utilize the biochar in developing nanotechnology-based fertilizers for soil application.