Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels

Rice is a main staple crop in Asia, where arsenic (As) contamination poses a significant threat. This issue is particularly acute in South Asia as their communities rely heavily on Asian rice for daily sustenance. Arsenic contamination in rice often originates from contaminated irrigation sources...

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Main Author: Thai, Clara Xin Ying
Other Authors: Grzegorz Lisak
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2024
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Online Access:https://hdl.handle.net/10356/177114
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1771142024-05-24T15:34:39Z Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels Thai, Clara Xin Ying Grzegorz Lisak Lim Tuti, Mariana School of Civil and Environmental Engineering Residues and Resource Reclamation Centre g.lisak@ntu.edu.sg, TMLim@ntu.edu.sg Engineering Rice is a main staple crop in Asia, where arsenic (As) contamination poses a significant threat. This issue is particularly acute in South Asia as their communities rely heavily on Asian rice for daily sustenance. Arsenic contamination in rice often originates from contaminated irrigation sources. One strategy to mitigate this is to utilise a water-tolerant rice variety, known as Hanyou-73 (HY-73), which can reduce irrigation required and hence contact of the crops with arsenic. However, one big issue is that water conditions can affect the nutrients available in the soil, and hence, the availability of nutrients that can be uptaken by the rice for optimal growth. To address this challenge, biochar is introduced to solve this issue. Biochar can not only supply nutrients but also retain water. The hypothesis is that biochar can provide essential nutrients to support rice growth in water-limited conditions. The objective of the experiment was to determine which combination of two factors, biochar and water content, would result in the lowest accumulation of arsenic, and to identify which factor had a greater impact. The results were obtained using advanced analytical instruments, such as inductively coupled plasma mass spectrometry (ICP-MS). It was shown that the HY-73 variety was indeed able to tolerate non-flooding conditions and grow optimally. The analysis revealed that water content had a significant impact on the arsenic accumulation as it presented an optimal growth environment for the rice. The higher the water content, the lower the arsenic accumulation, especially in flooded conditions. However, biochar had irregular results, having less of an impact on the arsenic accumulation in rice. Bachelor's degree 2024-05-24T03:28:08Z 2024-05-24T03:28:08Z 2024 Final Year Project (FYP) Thai, C. X. Y. (2024). Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/177114 https://hdl.handle.net/10356/177114 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
spellingShingle Engineering
Thai, Clara Xin Ying
Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
description Rice is a main staple crop in Asia, where arsenic (As) contamination poses a significant threat. This issue is particularly acute in South Asia as their communities rely heavily on Asian rice for daily sustenance. Arsenic contamination in rice often originates from contaminated irrigation sources. One strategy to mitigate this is to utilise a water-tolerant rice variety, known as Hanyou-73 (HY-73), which can reduce irrigation required and hence contact of the crops with arsenic. However, one big issue is that water conditions can affect the nutrients available in the soil, and hence, the availability of nutrients that can be uptaken by the rice for optimal growth. To address this challenge, biochar is introduced to solve this issue. Biochar can not only supply nutrients but also retain water. The hypothesis is that biochar can provide essential nutrients to support rice growth in water-limited conditions. The objective of the experiment was to determine which combination of two factors, biochar and water content, would result in the lowest accumulation of arsenic, and to identify which factor had a greater impact. The results were obtained using advanced analytical instruments, such as inductively coupled plasma mass spectrometry (ICP-MS). It was shown that the HY-73 variety was indeed able to tolerate non-flooding conditions and grow optimally. The analysis revealed that water content had a significant impact on the arsenic accumulation as it presented an optimal growth environment for the rice. The higher the water content, the lower the arsenic accumulation, especially in flooded conditions. However, biochar had irregular results, having less of an impact on the arsenic accumulation in rice.
author2 Grzegorz Lisak
author_facet Grzegorz Lisak
Thai, Clara Xin Ying
format Final Year Project
author Thai, Clara Xin Ying
author_sort Thai, Clara Xin Ying
title Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
title_short Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
title_full Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
title_fullStr Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
title_full_unstemmed Co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
title_sort co-cultivation of fern with biochar and varied irrigation levels for reduced arsenic accumulation: focus on the presence of biochar and varied irrigation levels
publisher Nanyang Technological University
publishDate 2024
url https://hdl.handle.net/10356/177114
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