Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application
Heavy metal(loid) contamination represents an immense challenge in sustainable agriculture. Arsenic, in particular, poses a great risk to the quality of agricultural products (e.g., rice grain). The sulfur amendment is recommended as an effective practice to remediate heavy metal(loid)–polluted soil...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-10-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651321007181 |
| _version_ | 1829518953197600768 |
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| author | Dengxiao Zhang Guanghui Du Wenjing Zhang Ya Gao Hongbin Jie Wei Rao Ying Jiang Daichang Wang |
| author_facet | Dengxiao Zhang Guanghui Du Wenjing Zhang Ya Gao Hongbin Jie Wei Rao Ying Jiang Daichang Wang |
| author_sort | Dengxiao Zhang |
| collection | DOAJ |
| description | Heavy metal(loid) contamination represents an immense challenge in sustainable agriculture. Arsenic, in particular, poses a great risk to the quality of agricultural products (e.g., rice grain). The sulfur amendment is recommended as an effective practice to remediate heavy metal(loid)–polluted soil, given its function in enhancing crop production and alleviating heavy metal(loid) accumulation in the plant. This study aims to investigate the roles of sulfur fertilizer on arsenic accumulation in rice and to explore the key mechanisms. In this study, Elemental sulfur (ES) and gypsum sulfur (GS) were chosen as sulfur fertilizers, with different application rates (0, 0.15, and 0.30 g S kg−1 soil). The results showed that ES and GS treatment significantly increased rice grain yield by 46.6–59.7% and significantly reduced the rice grain arsenic content by more than 39.1%. The sulfur treatment decreased soil pe + pH values. ES treatment increased the availability of arsenic in the bulk soil, whereas GS showed little effect. Sulfur application promoted the formation of iron and manganese plaques, which could suppress the migration of arsenic from soil to rice root. In addition, the sulfur treatment decreased the arsenic that migrating from rice roots to grains by 33.3–66.7%. This study indicates that sulfur application could increase arsenic availability in paddy soil; however, it can inhibit arsenic accumulation in rice grains via increasing the root plaques content and inhibiting the translocation of arsenic from roots to grains. |
| first_indexed | 2024-12-16T14:30:51Z |
| format | Article |
| id | doaj.art-842e4548a256494db7de934747901351 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-16T14:30:51Z |
| publishDate | 2021-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-842e4548a256494db7de9347479013512022-12-21T22:28:15ZengElsevierEcotoxicology and Environmental Safety0147-65132021-10-01223112606Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer applicationDengxiao Zhang0Guanghui Du1Wenjing Zhang2Ya Gao3Hongbin Jie4Wei Rao5Ying Jiang6Daichang Wang7College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; Research Center for Rice Engineering in Henan Province, Henan Agricultural University, Zhengzhou 450002, China; Corresponding author at: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China.Heavy metal(loid) contamination represents an immense challenge in sustainable agriculture. Arsenic, in particular, poses a great risk to the quality of agricultural products (e.g., rice grain). The sulfur amendment is recommended as an effective practice to remediate heavy metal(loid)–polluted soil, given its function in enhancing crop production and alleviating heavy metal(loid) accumulation in the plant. This study aims to investigate the roles of sulfur fertilizer on arsenic accumulation in rice and to explore the key mechanisms. In this study, Elemental sulfur (ES) and gypsum sulfur (GS) were chosen as sulfur fertilizers, with different application rates (0, 0.15, and 0.30 g S kg−1 soil). The results showed that ES and GS treatment significantly increased rice grain yield by 46.6–59.7% and significantly reduced the rice grain arsenic content by more than 39.1%. The sulfur treatment decreased soil pe + pH values. ES treatment increased the availability of arsenic in the bulk soil, whereas GS showed little effect. Sulfur application promoted the formation of iron and manganese plaques, which could suppress the migration of arsenic from soil to rice root. In addition, the sulfur treatment decreased the arsenic that migrating from rice roots to grains by 33.3–66.7%. This study indicates that sulfur application could increase arsenic availability in paddy soil; however, it can inhibit arsenic accumulation in rice grains via increasing the root plaques content and inhibiting the translocation of arsenic from roots to grains.http://www.sciencedirect.com/science/article/pii/S0147651321007181Fe/Mn plaqueRhizosphereRice arsenic accumulationSoil arsenic fractionSulfur fertilizer |
| spellingShingle | Dengxiao Zhang Guanghui Du Wenjing Zhang Ya Gao Hongbin Jie Wei Rao Ying Jiang Daichang Wang Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application Ecotoxicology and Environmental Safety Fe/Mn plaque Rhizosphere Rice arsenic accumulation Soil arsenic fraction Sulfur fertilizer |
| title | Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application |
| title_full | Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application |
| title_fullStr | Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application |
| title_full_unstemmed | Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application |
| title_short | Remediation of arsenic-contaminated paddy soil: Effects of elemental sulfur and gypsum fertilizer application |
| title_sort | remediation of arsenic contaminated paddy soil effects of elemental sulfur and gypsum fertilizer application |
| topic | Fe/Mn plaque Rhizosphere Rice arsenic accumulation Soil arsenic fraction Sulfur fertilizer |
| url | http://www.sciencedirect.com/science/article/pii/S0147651321007181 |
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