Publication: Effects of Amendments on Growth and Uptake of Cd and Zn by Wetland Plants, Typha angustifolia and Colocasia esculenta from Contaminated Sediments
Issued Date
2015-01-01
Resource Type
ISSN
15497879
15226514
15226514
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2-s2.0-84936768186
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Mahidol University
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SCOPUS
Bibliographic Citation
International Journal of Phytoremediation. Vol.17, No.9 (2015), 900-906
Suggested Citation
P. Chayapan, M. Kruatrachue, M. Meetam, P. Pokethitiyook Effects of Amendments on Growth and Uptake of Cd and Zn by Wetland Plants, Typha angustifolia and Colocasia esculenta from Contaminated Sediments. International Journal of Phytoremediation. Vol.17, No.9 (2015), 900-906. doi:10.1080/15226514.2014.989310 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/35219
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Effects of Amendments on Growth and Uptake of Cd and Zn by Wetland Plants, Typha angustifolia and Colocasia esculenta from Contaminated Sediments
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Abstract
© 2015, Taylor & Francis Group, LLC. A pot study was conducted to compare the effects of amendments (CaHPO<inf>4</inf> and cow manure) on growth and uptake of Cd and Zn from contaminated sediments by two wetland plant species, Typha angustifolia and Colocasia esculenta. Contaminated sediments (Cd 33.2 mg kg<sup>–1</sup> and Zn 363 mg kg<sup>–1</sup>) were collected from Mae Tao basin, Mae Sot district, Tak province, Thailand. The experiment consisted of 4 treatments: control (uncontaminated sediment), Cd/Zn, Cd/Zn + 5% CaHPO<inf>4</inf>, and Cd/Zn + 10% cow manure. Plants were grown for 3 months in the greenhouse. The addition of CaHPO<inf>4</inf> resulted in the highest relative growth rate (RGR) and highest Cd accumulation in both T. angustifolia and C. esculenta while the lowest RGR was found in C. esculenta grown in the cow manure treatment. Both plant species had higher concentrations of metals (Cd, Zn) in their belowground parts. None of the amendments affected Zn accumulation. C. esculenta exhibited the highest uptake of both Cd and Zn. The results clearly demonstrated the phytoremediation potential of C. esculenta and the enhancement of this potential by CaHPO<inf>4</inf> amendment.