Carbon sequestration in a sandy soil amended with either organic wastes or their biochar in relation with lettuce productivity | ||
Damietta Journal of Agricultural Sciences | ||
Volume 3, Issue 1, January 2024, Pages 63-76 PDF (1.51 M) | ||
Document Type: Original research papers | ||
DOI: 10.21608/djas.2024.406064 | ||
Authors | ||
Elmtwally Selim* 1; Ramy Khalifa2; Dina Zidan3; Mokhtar Beheary4 | ||
1Soil and Water Department، Faculty of Agriculture، Damietta University, Egypt | ||
2Soils and water department, Faculty of Agriculture, Damietta university, Damietta, Egypt | ||
3Soils and water department, Faculty of Agriculture, Damietta University, Damietta, Egypt | ||
4Environmental science department, Faculty of science, Port-said university | ||
Abstract | ||
One potential method of capturing atmospheric carbon and assisting in both climate change adaptation and mitigation is the pyrolysis of biomass into biochar, which is then added to soil. Intensive research on soil CO2 emission is necessary due to the lack of carbon capture in soil. As a result, a pot experiment including sandy soil and five treatments was carried out: (T0) Control (T1) compost derived from town refuse (CTR), (T2) fresh sewage sludge (FSS), (T3) biochar derived from compost town refuse (BCTR) and (T4) biochar derived from sewage sludge (BSS) to quantify CO2 emission and its effect on lettuce growth. The CO2 emissions decreased in the biochar amended treatments, The biochar augmented treatment represented a reduction in soil CO2 emissions, with the lowest value (803 ppm) being recorded under BSS (T4) at the end of the experiment. The highest vegetative parameters values of lettuce plants and organic carbon fractions dissolved organic carbon (DOC), microbial organic carbon (MOC) and oxidized organic carbon (OOC) of soils were achieved in BSS treatment (T4), while the lowest values were shown in control treatment (T0). In addition to the pathogenic bacteria completely disappeared from the residues after burning it at 500°C and turning into biochar. Therefore, using biochar is an important technique for enhancing carbon sequestration, and improving soil quality in arid regions. | ||
Keywords | ||
lettuce; biochar; soil enzymes activity; carbon emission | ||
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