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Publication Type J
Authors Devi, S., C. Rani, K. S. Datta, S. K. Bishnoi, S. C. Mahala and R. Angrish
Title PHYTOREMEDIATION OF SOIL SALINITY USING SALT HYPERACCUMULATOR PLANTS
Source Indian Journal of Plant Physiology
Abstract Various salt hyperaccumulator plants collected from semi arid saline areas of North-West India Haryana and Rajasthan like Arundo donax, Atriplex nummularia, Atriplex lentiforrmis, Atriplex amnicola, Haloxylon recurvum, Heliotropium eichwaldi, Portulaca oleracea, Salsola baryosma, Suaeda fruticosa and Suaeda nudiflora were found promising and shortlisted after extensive experimentation in the laboratory and screen house studies dealing with various salt hyperaccumulator characteristics like soil ECe and comparative total salt ion accumulation in the soil vis-A-vis above ground biomass. These were grown in salinity microplots using artificially saline soil of 8 and 16 dSm(-1) of salinity. Various plant growth parameters like cumulative shoot length at the time of harvesting at vegetative stage, fresh / dry shoot biomass, ash content, total organic matter, total dissolved solids (TDS), phytoaccumulation of salt ions in above ground biomass, total salt ionic content left in the soil after harvesting, decrease in soil ECe per year, per cent remediation, salt accumulation in above ground biomass and deduced phytoremedaition of these potential salt hyperaccumulator plants were calculated. Our estimates showed that best salt hyperaccumulators were in the order of Suaeda fruticosa, Suaeda nudiflora, Portulaca oleracea, Atriplex annicola, Atriplex lentiformis and Haloxylon recurvum which could phytoextract 32.72, 32.70, 29.04, 20.63, 20.58 and 18.11 kg salts ha(-1) year(-1) at 8 dSm(-1) and Suaeda nudiflora, Portulaca oleracea, Suaeda fruticosa, Salsola baryosma, Haloxylon recurvvum and Atriplex lentiformis could accumulate 101.39,89.44,74.76,66.77,62.10 and 60.67 kg toxic salts ha(-1) year(-1) in their above ground biomass at 16 dSm(-1) of salinity, respectively. It is deduced that time taken for phytoremediation of soil salinity up to safe level of 2 dSm(-1) was 1.66 to 2.37 years for 8 dSm(-1) and it was 4.89 to 6 years for 16 dSm(-1) of soil salinity
ISSN 0019-5502
ISBN 0019-5502
Publication Date Oct-Dec
Year Published 2008
Volume 13
Issue 4
Beginning Page 347-356
Unique Article Identifier BCI:BCI200900382297
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