PHYTOREMEDIATION POTENTIAL OF HELIANTHUS ANNUUS L IN SEWAGE-IRRIGATED INDO-GANGETIC ALLUVIAL SOILS
The study of phytoremediation potential of HELIANTHUS ANNUUS L was conducted in the sewage-irrigated Indo-Gangetic alluvial soils, India. Calcium @ 1.0% and Zn @ 40ppm enhanced the yield of H. annuus L and minimized the toxicity of Cr in the investigated soils. The study
indicated that H. annuus L is highly sensitive to Cr and Zn in terms of metallic pollution; and may be used as indicator plant. For Cr-phytoremediation, humic acid treatment @ 500 mL/acre induced the Cr-accumulation in roots (p < 0.007) and in shoots (p < 0.015), which was recorded
3.21 and 3.16 mg/kg in root and shoot of H. annuus L, respectively. We suggest that H. annuus L fulfils the necessary condition for efficiently increasing species bioaccumulation after soil treatment with humic acid in Cr-polluted sewage-irrigated soils through soil- plant rhizospheric
processes.
Keywords: HELIANTHUS ANNUUS L; chromium; humic acid; phytoremediation; soil amelioration
Document Type: Research Article
Affiliations: 1: Sheila Dhar Institute of Soil Science, Department of Chemistry,University of Allahabad, Allahabad, India 2: Department of Biochemistry,University of Allahabad, AllahabadUttar Pradesh (U.P.), India 3: JRF, DNA Club ProjectThe National Academy of Sciences India, Allahabad, India
Publication date: 01 March 2012
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