Abstract
Arsenic accumulation in rice grain has been identified as a major problem in some regions of Asia. A study was conducted to investigate the effect of increased organic matter in the soil on the release of arsenic into soil pore water and accumulation of arsenic species within rice grain. It was observed that high concentrations of soil arsenic and organic matter caused a reduction in plant growth and delayed flowering time. Total grain arsenic accumulation was higher in the plants grown in high soil arsenic in combination with high organic matter, with an increase in the percentage of organic arsenic species observed. The results indicate that the application of organic matter should be done with caution in paddy soils which have high soil arsenic, as this may lead to an increase in accumulation of arsenic within rice grains. Results also confirm that flooding conditions substantially increase grain arsenic. © 2013 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 38-47 |
Number of pages | 10 |
Journal | Environmental Pollution |
Volume | 177 |
Early online date | 6 Mar 2013 |
DOIs | |
Publication status | Published - Jun 2013 |
Bibliographical note
Copyright © 2013 Elsevier Ltd. All rights reserved.Keywords
- arsenic
- organic matter
- pore water
- water management
- arsenic amendment