Author : Shuhe Wei^a, Yunmeng Li^a,b, Qixing Zhou^a, Mrittunjai Srivastava^c, Siuwai Chiu^d, Jie Zhan^e, Zhijie Wu^a and Tieheng Sun^a.

Address : (^a Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China, ^b Graduate School of Chinese Academy of Sciences, Beijing 100039, PR China, ^c North Florida Research and Education Center, University of Florida, Quincy, FL 32351-5677, USA, ^d Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China, ^e Department of Biotechnology, Liaoning University of Traditional Chinese Medicine, Shenyang 110101, PR China).

Abstract : Effect of fertilizer amendments on phytoremediation of Cd-contaminated soil by a newly discovered hyperaccumulator Solanum nigrum L.

Journal : Journal of Hazardous Materials,

Volume No. : Volume 176(1-3)

Publish Year : 2010

Page No. : 269-273

Main Data : Phytoremediation is a cost-effective, simple and sustainable beneficiary technique to purify the polluted environment. Solanum nigrum L., a newly found cadmium (Cd) hyperaccumulator, has shown the potential to remediate Cd-contaminated soils. Present study investigated the effects of fertilizer amendments on the Cd uptake by S. nigrum. Chicken manure and urea are usual agricultural fertilizers and more environmental friendly. The results showed that Cd concentrations in shoots of S. nigrum were significantly decreased (p < 0.05) by 28.2–34.6%, as compared to that of without the addition of chicken manure, but not the case for urea treatment. However, Cd extraction capacities (μg pot−1) in shoot biomass of S. nigrum were significantly increased (p < 0.05) due to increased shoot biomass. In addition, available Cd concentration in soil significantly decreased due to addition of chicken manure. Thus, urea might be a better fertilizer for strengthening phytoextraction rate of S. nigrum to Cd, and chicken manure may be a better fertilizer for phytostabilization. Keywords: Cadmium; Fertilizer; Phytoextraction; Phytostability; Solanum nigrum