Carbon mineralization and carbon dioxide emission from organic matter added soil under different temperature regimes

• Published in: International Journal of Recycling of Organic Waste in Agriculture Vol. 6; no. 4; pp. 311 - 319
• Main Authors: Hossain, Md. Babu, Rahman, Md. Mizanur, Biswas, Jatish Chandra, Miah, Md. Main Uddin, Akhter, Sohela, Maniruzzaman, Md, Choudhury, Apurba Kanti, Ahmed, Faruque, Shiragi, Md. Humayn Kabir, Kalra, Naveen
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2017; Islamic Azad University, Isfahan (Khorasgan) Branch; Oxford International Collaboration Centre Press (OICC press)
• Subjects: Animal wastes; Aquatic Pollution; Carbon degradation; Carbon dioxide; Carbon dioxide emissions; Cattle manure; Charcoal; Climate-smart soil management; Composting; Decomposition; Dung; Earth and Environmental Science; Emission analysis; Emission measurements; Emissions control; Environment; Environmental degradation; High temperature; Manures; Mineralization; Organic materials; Organic matter; Organic phosphorus; Organic soils; Original Research; Oryza; Phosphorus; Poultry manure; Rice; Soil management; Soil properties; Soil temperature; Soils; Straw; Temperature effects; Titration; Waste Water Technology; Water Management; Water Pollution Control; Worms; Climate-smart soil management; Organic materials; Carbon degradation; Soil properties
• ISSN: 2195-3228; 2251-7715
• DOI: 10.1007/s40093-017-0179-1

Purpose Information on carbon dioxide (CO 2 ) emission from different organic sources and their temperature sensitivity to decomposition is scarce in Bangladesh. Therefore, this study quantified the rates of CO 2 emission and carbon (C) degradation constants from different organic material mixed soils at variable temperatures in two laboratory experiments. Methods The first experiment was conducted at room temperature for 26 weeks to study CO 2 emission and C mineralization using vermicompost, chicken manure, cow dung, rice straw, and rice husk biochar. Weekly CO 2 emission was measured by alkali absorption followed by acid titration. The second experiment comprised two factors, viz. four organic materials (vermicompost, chicken manure, cow dung, and rice straw) and six temperature regimes (25, 30, 35, 40, 45, and 50 °C). Organic materials at 2.5 g C kg −1 soil were mixed in both experiments. Results CO 2 emission reached the peak at 5th weeks of incubation and then decreased with irregular fashion until 21st week. The C emission loss followed in the order of chicken manure > rice straw > vermicompost > cow dung > rice husk biochar, and C degradation constants indicated the slower decomposition of rice husk biochar compared to cow dung, vermicompost, chicken manure, and rice straw. Temperature positively enhanced the mineralization of organic materials in the order of 50 > 45 > 40 > 35 > 30 > 25 °C, which contributed to higher availability of soil phosphorus. Conclusions High temperature increased mineralization of tested organic materials. Because of slower decomposition rice husk biochar, cow dung and vermicompost application can be considered as climate-smart soil management practices that might help in reducing CO 2 emission from soil.