Abstract
ABSTRACT Biochar is a soil amendment made from organic waste pyrolysis that has the potential to enhance crop growth and reduce soil contamination. A recent study examined the effects of biochar application on rice plant growth, yield, biomass, and total petroleum hydrocarbon (TPH) contamination in soil. The study included four treatments: control, biochar (2.0% and 4.0% addition), TPH (4.0%, 6.0%, and 8.0%), and biochar+TPH. Results showed that biochar application was effective in mitigating the negative effects of TPH contamination on soil-physiochemical properties, increasing soil pH, organic matter, and available nutrients. Additionally, biochar application significantly increased rice plant height compared to the control and mitigated the negative impact of TPH on rice plant height in TPH-contaminated soil. Biochar application at 4.0% and 6.0% resulted in higher grain yield and biomass than the control group under all TPH contamination levels, with 6.0% being the most effective. Overall, the study highlights the potential of biochar as a sustainable approach for crop production in contaminated areas. However, further research is required to understand the underlying mechanisms, sustainability, and long-term effects of biochar application in agricultural systems.
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