Biochar application involves the use of a type of charcoal produced from organic materials such as agricultural waste, wood chips, or manure, which is used as a soil amendment to improve soil fertility and crop productivity. Biochar is known for its ability to enhance soil structure, increase water and nutrient retention, and promote the growth of beneficial soil microorganisms. Research in this area focuses on understanding the mechanisms of biochar's effects on soil health, crop yield, and greenhouse gas emissions, as well as exploring its potential as a sustainable agricultural practice for mitigating climate change and improving food security.