<![CDATA[Soil respiration activity is one of the contributors to carbon dioxide (CO2) emissions from the agricultural sector. The agricultural sector can also reduce the CO2 emissions it produces, one of which is by making biochar from agricultural waste. Palm shells have potential as raw materials for biochar because they contain hemicellulose, cellulose and lignin. The purpose of this study was to study the effect of adding biochar with variations in pyrolysis temperature on CO2 emissions resulting from the soil respiration process. Palm shell biochar was pyrolyzed with temperature variations of 500 oC and 600 oC for 1 hour and activated using NaOH. Biochar was then added to the soil at a dose of 10% and incubated for 25 days which was tested once every five days. The results showed that the highest CO2 emissions occurred from soil respiration activities with the addition of palm shell biochar at a temperature of 600 oC at an incubation time of 5 days, which was 37 mg CO2. This value was 22.95% greater than the control treatment without the addition of biochar.]]>
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