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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 2, 2016, pp. 631-638
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Bioline Code: st16058
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 2, 2016, pp. 631-638
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Potential of some soil amendments in reducing leaching of fipronil to groundwater
Joshi, V.; Srivastava, A. & Srivastava, P. C.
Abstract
The efficacy of different soil amendments in
reducing the leaching of fipronil to groundwater was
examined in soil columns under laboratory conditions. The
polyvinyl chloride columns were sequentially filled with
soils of different depths simulating natural conditions.
Different soil amendments namely fresh cow dung (FCD)
slurry @ 0.5 t ha-1, farmyard manure @ 5.0 t ha-1, press
mud compost @ 5.0 t ha-1, cereal straw @ 5.0 t ha-1 and
gypsum @ 5.0 t ha-1 were applied on the top soil. The
application of farmyard manure, cereal straw and gypsum
decreased the soil pH, and except FCD, all the amendments
increased the electrical conductivity of the soil. Among
different soil amendments, press mud compost and cereal
straw were the most effective in reducing leaching of the
fipronil to groundwater. Fipronil residues in soil columns
after leaching indicated that all soil amendments effectively
increased the retention of fipronil in soil; however,
press mud compost and cereal straw also dissipated higher
amount of fipronil. The results also revealed a higher
retention of applied fipronil with lower degradation and
leaching under application of 0.5 t FCD ha-1 as organic
amendment in soil in comparison with the unamended soil.
Keywords
Cereal straw; Efficacy; Polyvinyl chloride (PVC) columns; Press mud compost
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