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Research Article
ScienceAsia 30 (2004): 255-259 |doi: 10.2306/scienceasia1513-1874.2004.30.255
Distribution of Arsenic in Kangkong (Ipomoea reptans)
Md. Mizanur Rahman,a* and Preeda Parkpianb
ABSTRACT: The distribution of arsenic in roots and edible parts of Ipomoea reptans in presence of phosphate
fertilizer was assessed in a pot experiment in Khulna, Bangladesh. There were 9 treatments with the combination
of 3 levels of arsenic (0, 2 and 30 mg kg-1 soil) and 3 levels of phosphorus (0, 40 and 80 mg kg-1 soil). The
study was carried out in a 3x3 factorial experiment with three replicates using completely randomized
design. Arsenic application in soils significantly increased its accumulation in plants, and arsenic content in
roots was significantly higher than in edible parts. Phosphorus fertilizers enhanced arsenic accumulation in
plants. The maximum accumulations of arsenic in roots and edible parts at 30 days of plant’s age were 12.1
mg kg-1 and 7.7 mg kg-1 dry matter, respectively.
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a Aquaculture and Aquatic Resource Management Field of Study, Asian Institute of Technology, Mail Box
159, PO Box 4, Klongluang, Pathumthani 12120, Thailand.
b Environmental Technology and Management Field of Study, Asian Institute of Technology, Klongluang,
Pathumthani 12120, Thailand.
* Corresponding author, E-mail: rmizanur@ait.ac.th
Received 13 Jan 2004,
Accepted 13 Jul 2004
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