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Research articles

ScienceAsia 42 (2016): 83-91 |doi: 10.2306/scienceasia1513-1874.2016.42.083

Influence of organic amendments on phytostabilization of Cd-contaminated soil by Eucalyptus camaldulensis

Weeradej Meeinkuirta,*, Maleeya Kruatrachueb, John Pichtelc, Theerawut Phusantisampand, Patompong Saengwilaib

ABSTRACT:     Greenhouse and field experiments were conducted to evaluate the influence of three different organic amendments (cow manure, pig manure, and organic fertilizer) on the Cd phytostabilization potential of Eucalyptus camaldulensis grown on Cd-contaminated soil. The application of all amendments, particularly organic fertilizer, improved plant growth (i.e., height and biomass production) when compared to the control (Cd-contaminated soil alone), in both greenhouse and field experiments. E. camaldulensis treated with organic fertilizer experienced the greatest height (39 cm and 3.8 m) and biomass production (2.0 g and 3.3 kg) in greenhouse and field experiments, respectively. Plants grown on amended soils had lower Cd accumulation than those grown on the Cd soil alone. Among the treatments, organic fertilizer resulted in a translocation factor <1 and a bioconcentration factor for the root (BCFR) >1, indicating the potential of this species to stabilize Cd in the roots. The results showed that E. camaldulensis is a promising species for phytostabilization of Cd-contaminated soil. The wood of the mature tree is used in the manufacture of commercial products; given the low Cd uptake by E. camaldulensis, it is feasible to harvest the wood grown on Cd-affected soils for making paper and furniture.

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a Mahidol University, Nakhonsawan Campus, Nakhon Sawan 60130 Thailand
b Department of Biology, Faculty of Science, Mahidol University, Bangkok 10400 Thailand
c Department of Natural Resources and Environmental Management, Ball State University, Muncie, IN 47306, USA
d Department of Biotechnology, Faculty of Applied Science, King Mongkut University of Technology North Bangkok, Bangkok 10800 Thailand

* Corresponding author, E-mail: phytoplankton8@gmail.com

Received 17 Sep 2015, Accepted 0 0000