Florida, Institute of Food and Agricultural Science, Mid-Florida Research and ... of these technologies have significant limitations in terms of requiring technical.
International Journal of Phytoremediation, 11:313–328, 2009 C Taylor & Francis Group, LLC Copyright ISSN: 1522-6514 print / 1549-7879 online DOI: 10.1080/15226510802564918
EFFECTS OF NITROGEN AND PHOSPHORUS LEVELS, AND FROND-HARVESTING ON ABSORPTION, TRANSLOCATION AND ACCUMULATION OF ARSENIC BY CHINESE BRAKE FERN (PTERIS VITTATA L.) Seenivasan Natarajan,1 Robert H. Stamps,1 Uttam K. Saha,2 and Lena Q. Ma2 Downloaded By: [Stamps, Robert H.] At: 20:52 5 January 2009
1
University of Florida, Institute of Food and Agricultural Science (IFAS), Mid-Florida Research and Education Center (MREC), Department of Environmental Horticulture, Apopka, FL, USA 2 University of Florida, Soil and Water Science Department, Gainesville, FL, USA This hydroponic experiment was conducted to determine the effects of nitrogen (N) and phosphorus (P) levels and frond-harvesting on the effectiveness of arsenic (As)hyperaccumulator Chinese brake fern (Pteris vittata L.) to remove As from contaminated groundwater collected from south Florida. Three-month old ferns were grown in 38-L plastic tanks (two ferns per tank) containing 30-L of As-contaminated water (130 µg·L−1 As), which was amended with modified 0.25 strength Hoagland’s solution #2. Two N (26 or 52 mg·L−1) and two P levels (1.2 and 2.4 mg·L−1) were tested in one experiment, whereas the effect of frond-harvesting was tested in a separate experiment. Initially, N had little effect on plant As removal whereas low P treatment was more effective than high P and As was reduced to
