Abstract
<jats:p>Biochar is a carbon-rich substance made by pyrolyzing organic biomass in an environment with no oxygen. It has become a viable soil amendment that might greatly improve the chemical characteristics and fertility of soil. This chapter provides a comprehensive analysis of biochar's diverse effects on soil chemistry, encompassing changes to pH, cation exchange capacity, nutrient retention, and overall soil fertility measurements. Through examination of current research findings, we analysed the mechanisms by which biochar alters soil chemical dynamics, its interaction with native soil components, and the ensuing consequences for agricultural production and environmental sustainability. The conversation explores the role of biochar in carbon sequestration, nutrient cycling, and improving soil conditions. It also discusses how the impacts of biochar can vary depending on the feedstock sources, production settings, and soil types.</jats:p>