Seasonal Variations in Grain Yield, Greenhouse Gas Emissions and Carbon Sequestration for Maize Cultivation in Bangladesh

Jatish Chandra Biswas, Md. Mozammel Haque, Md. Belal Hossain, Md. Maniruzzaman, Taslima Zahan, Md. Mizanur Rahman, Ranjit Sen, Sheikh Ishtiaque, Apurbo K. Chaki, Imrul Mossadek Ahmed, Shahrina Akhtar, Faruque Ahmmed, Md. Faruque Hossain, Sohela Akhter, Mohammad Kamruzzaman, Jiban Krishna Biswas, Amnah Mohammed Alsuhaibani, Ahmed Gaber and Akbar Hossain
Additional contact information
Jatish Chandra Biswas: Krishi Gobeshona Foundation, BARC Complex, Dhaka 1215, Bangladesh
Md. Mozammel Haque: Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh
Md. Belal Hossain: Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh
Md. Maniruzzaman: Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh
Taslima Zahan: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Md. Mizanur Rahman: Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
Ranjit Sen: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Sheikh Ishtiaque: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Apurbo K. Chaki: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Imrul Mossadek Ahmed: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Shahrina Akhtar: Krishi Gobeshona Foundation, BARC Complex, Dhaka 1215, Bangladesh
Faruque Ahmmed: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Md. Faruque Hossain: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Sohela Akhter: Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
Mohammad Kamruzzaman: Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh
Jiban Krishna Biswas: Krishi Gobeshona Foundation, BARC Complex, Dhaka 1215, Bangladesh
Amnah Mohammed Alsuhaibani: Department of Physical Sport Science, College of Education, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Ahmed Gaber: Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Akbar Hossain: Department of Agronomy, Bangladesh Wheat and Maize Research Institute, Dinajpur 5200, Bangladesh

Sustainability, 2022, vol. 14, issue 15, 1-15

Abstract: Rationale : Greenhouse gas (GHG) emissions from crop agriculture are of great concern in the context of changing climatic conditions; however, in most cases, data based on lifecycle assessments are not available for grain yield variations or the carbon footprint of maize. The current study aimed to determine net carbon emissions and sequestration for maize grown in Bangladesh. Methods: The static closed-chamber technique was used to determine total GHG emissions using data on GHG emissions from maize fields and secondary sources for inputs. A secondary source for regional yield data was used in the current study. GHG emission intensity is defined as the ratio of total emissions to grain yield. The net GHG emission/carbon sequestration was determined by subtracting total GHG emissions (CO 2 eq.) from net primary production (NPP). Results: Grain yields varied from 1590 to 9300 kg ha −1 in the wet season and from 680 to 11,820 kg ha −1 in the dry season. GHG emission intensities were 0.53–2.21 and 0.37–1.70 kg CO 2 eq. kg −1 grain in the wet and dry seasons, respectively. In Bangladesh, the total estimated GHG emissions were 1.66–4.09 million tonnes (MT) CO 2 eq. from 2015 to 2020, whereas the net total CO 2 sequestration was 1.51–3.91 MT. The net CO 2 sequestration rates were 984.3–5757.4 kg ha −1 in the wet season and 1188.62–5757.39 kg ha −1 in the dry season. This study observed spatial variations in carbon emissions and sequestration depending on growing seasons. In the rice–maize pattern, maize sequestered about 1.23 MT CO 2 eq. per year −1 , but rice emitted about 0.16 MT CO 2 eq. per year −1 . This study showed potential spatiotemporal variations in carbon footprints. Recommendation : Special care is needed to improve maize grain yields in the wet season. Fertiliser and water use efficiencies need to be improved to minimise GHG emissions under changing climatic conditions. Efforts to increase the area under cultivation with rice–maize or other non-rice crop-based cropping systems are needed to augment CO 2 sequestration. The generation of a regional data bank on carbon footprints would be beneficial for combating the impact of climate change.

Keywords: wet and dry seasons; net carbon emissions and sequestration; spatial variability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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