An integrated approach of rice hull biochar-alternative water management as a promising tool to decrease inorganic arsenic levels and to sustain essential element contents in rice
Article
Article Title | An integrated approach of rice hull biochar-alternative water management as a promising tool to decrease inorganic arsenic levels and to sustain essential element contents in rice |
---|---|
ERA Journal ID | 4682 |
Article Category | Article |
Authors | Kumarathilaka, Prasanna (Author), Bundschuh, Jochen (Author), Seneweera, Saman (Author) and Ok, Yong Sik (Author) |
Journal Title | Journal of Hazardous Materials |
Journal Citation | 405, pp. 1-9 |
Article Number | 124188 |
Number of Pages | 9 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0304-3894 |
1873-3336 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jhazmat.2020.124188 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0304389420321786 |
Abstract | Arsenic (As) in rice agroecosystems causes a loss of both rice yield and quality of rice grains. In this study, an integrated approach of biochar (BC) and alternative water management is proposed to reduce As content while sustaining essential elemental concentrations in rice. The rice cultivar, Jayanthi, was grown, irrigated with 1 mg L−1 of As-containing water, under rice hull BC (RBC)-flooded, RBC-intermittent, conventional flooded, and intermittent treatments. The RBC has increased rice yield by 11%−19% in RBC-intermittent and -flooded treatments compared to the flooded treatment. Inorganic As content in rice tissues and abundance of Fe(III) reducing bacteria in the rhizosphere were lowered by 10%−83% and 40–70%, respectively, in RBC-flooded, -intermittent, and intermittent treatments over flooded treatment. Essential elemental concentrations (Fe, Mn, Zn, Mg, and Ca) in unpolished rice grains increased by 45%−329% in RBC-flooded and -intermittent treatments compared to flooded treatment. Overall, the integrated approach of RBC-intermittent practices has lowered inorganic As concentration in unpolished rice grains, while sustaining the levels of essential elements in rice grains, compared to other treatments. An integrated approach of RBC-intermittent practices is suggested for rice grown with As-contaminated water to improve the quality of rice, as well as tackling food-related malnutrition in people. |
Keywords | Rice; Arsenic; Biochar; Microorganisms; Essential elements |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410405. Environmental rehabilitation and restoration |
410501. Environmental biogeochemistry | |
300202. Agricultural land management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Civil Engineering and Surveying |
Centre for Crop Health | |
Korea University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6293/an-integrated-approach-of-rice-hull-biochar-alternative-water-management-as-a-promising-tool-to-decrease-inorganic-arsenic-levels-and-to-sustain-essential-element-contents-in-rice
205
total views9
total downloads2
views this month0
downloads this month