Organic materials like straw and biochar can help improve crop yield, store carbon in the soil, and reduce greenhouse gas emissions. A study analyzed data from 112 research papers to see how straw and biochar affect these factors. Biochar was found to increase soil carbon storage by 30.72%, while straw increased it by 6.92%. Both methods boosted crop yield, with biochar showing a slightly higher increase. However, straw led to a 37.69% increase in greenhouse gas emissions, while biochar reduced them by 23.94%. Factors like climate, soil type, and initial carbon levels in the soil also played a role in the outcomes. Overall, using biochar seems to be a good strategy for improving agriculture while also benefiting the environment.