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The research were carried out to study the potency of Salvinia molesta D.S. MitchellÂ (Kiambang), Limnocharis flava (L.) Buchenau (Genjer) and Monochoria vaginalisÂ (Burm.f.) Presl (Eceng) for Hg phytoextraction on paddy field contaminated with HgÂ from illegal mining. The plants were grown on contaminated media from paddy field inÂ Pongkor (68.269 ppm Hg) added by NPK fertilizer (0, 3 and 6 g/pot) and ammoniumÂ thiosulphate chelating agent (0, 20 ppm). The result showed that the growth of kiambang,eceng, genjer and padi are significantly different. Chelating agent did not significantlyÂ affect the plant growth, meanwhile fertilizer significantly affected the plant growth. The
treatments resulted in different Hg concentration in the plants. Fertilizer increased plantÂ biomass and so plant Hg content since Hg contents is a function of total biomass andÂ Hg concentration. It can be concluded that based on the criteria of accumulator plant,kiambang is the most potentially Hg accumulator followed by genjer and eceng.
Key words: Phytoextraction, Hg, Salvinia molesta, Limnocharis flava, Monochoria
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